Mines, A Survey - Centers for Disease Control and Prevention · METHANE EMISSION FROM U.S. COAL...

Bureau of Mines Information Circular/ 1972

Methane Emission From US. Coal

Mines, A Survey

UNITED STATES DEPARTMENT OF THE INTERIOR

Information Circular 8558

Methane Emission From U.S. Coal Mines, A Survey

By M. C. Irani, E. D. Thimons, T . G. Bobick, Maurice Deul, and M. G. Zabetakis

Pittsburgh Mining and Safety Research Center, Pittsburgh, Pa.

U N I T E D S T A T E S DEPARTMENT OF T H E INTERIOR Rogers C. B. Morton, Secretary

BUREAU OF MINES Elburt F. Osborn, Director

Th is publication has been cataloged as fol lows:

Irani, Meherwan C Methane emission from U.S. coa l mines, a survey, by M. C.

Lrani [and others. Washington] U.S. Dept. of the Interior, Bureau of Mines [1972]

58 p. i l lus . (U.S. Bureau of Mines. Information circular 8558)

1. Methane. 2. Mine g a s e s . 3 . Mine venti lat ion. I. T i t l e . (Ser ies )

TN23.U71 no. 8558 622.06173

U.S. Dept. of the Int. Library

A

CONTENTS Page

A b s t r a c t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 I n t r o d u c t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 D e s c r i p t i o n o f U .S . c o a l b e d s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G e o g r a p h i c a l d i s t r i b u t i o n 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C o a l r e s o u r c e s and me thane e m i s s i o n 2

R e l a t i o n s h i p t o o i l and g a s d e p o s i t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Da t a s o u r c e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 P r e s e n t a t i o n o f d a t a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 R e s u l t s and d i s c u s s i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 C o n c l u s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Append ix 1 . - - C h a r a c t e r i s t i c s o f U .S . c o a l m ines p r o d u c i n g o v e r

1 m i l l i o n c u b i c f e e t o f me thane p e r d a y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Append ix 2 . - -Measu red me thane e m i s s i o n f rom c o a l m i n e s o f t h e

U n i t e d S t a t e s w i t h a n e m i s s i o n r a t e o f a t l e a s t 1 0 0 , 000 c u b i c f e e t p e r day . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Append ix 3 . - -Me thane e m i s s i o n i n r e l a t i o n t o c o u n t i e s f rom m i n e s e m i t t i n g a t l e a s t 1 0 0 , 000 c u b i c f e e t o f g a s p e r d a y . . . . . . . . . . . . . . . . . . . . 4 0

Append ix 4 . - -Me thane e m i s s i o n f rom mines i n c o a l b e d s e m i t t i n g i n e x c e s s o f 1 m i l l i o n c u b i c f e e t f rom e a c h bed . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 7

ILLUSTRATIONS

. . . . . . . . . . . . . . . . . . . . . . . . C o a l f i e l d s o f t h e c o n t e r m i n o u s U n i t e d S t a t e s 3 Remaining c o a l r e s o u r c e s o f t h e U n i t e d S t a t e s a s d e t e r m i n e d by

mapping and e x p l o r a t i o n . J a n u a r y 1. 1967 . b y S t a t e . a c c o r d i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . t o t o n n a g e and h e a t v a l u e 4

T o t a l r e m a i n i n g s t r i p p a b l e r e s o u r c e s and r e s e r v e s o f c o a l and . . . . . . l i g n i t e i n t h e U n i t e d S t a t e s . by r a n k . a s o f J a n u a r y 1. 1968 5

Remaining s t r i p p a b l e r e s o u r c e s and r e s e r v e s o f c o a l and l i g n i t e . . . . . i n t h e U n i t e d S t a t e s . by c o a l p r o v i n c e . a s o f J a n u a r y 1. 1968 6

E f f e c t o f a n i d l e p e r i o d on t h e me thane e m i s s i o n r a t e o f a n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . o p e r a t i n g mine i n P e n n s y l v a n i a 7

. . . . . . . . . . . . . . . . . L o c a t i o n s o f a c t i v e m i n e s i n t h e P i t t s b u r g h c o a l b e d 8 Methane e m i s s i o n r a t e and a v e r a g e d e p t h o f m i n e s i n t h e I l l i n o i s

Nos . 5 and 6 c o a l b e d s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Methane e m i s s i o n and c o a l p r o d u c t i o n r a t e s o f m i n e s i n t h e

. I l l i n o i s Nos 5 and 6 c o a l b e d s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Methane e m i s s i o n r a t e a n d a g e o f m i n e s i n t h e P i t t s b u r g h c o a l b e d . . . . 11 Methane e m i s s i o n r a t e v e r s u s c o a l p r o d u c t i o n r a t e t i m e s d e p t h

f o r m ines i n t h e P i t t s b u r g h c o a l b e d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Methane e m i s s i o n r a t e v e r s u s c o a l p r o d u c t i o n r a t e t i m e s d e p t h

. f o r m i n e s i n t h e P o c a h o n t a s Nos 3 and 4 c o a l b e d s . . . . . . . . . . . . . . . . . 1 3 Methane e m i s s i o n r a t e v e r s u s c o a l p r o d u c t i o n r a t e t i m e s d e p t h

. f o r m i n e s i n t h e I l l i n o i s Nos 5 and 6 c o a l b e d s . . . . . . . . . . . . . . . . . . . 1 4

METHANE EMISSION FROM U.S. COAL MINES, A SURVEY

M. C. lraniI1 E. D. ~ h i r n o n s , ~ T. G. Bobickll

Maurice ~ e u l , ~ and M. G. zabetakis4

ABSTRACT

This su rvey was conducted t o de te rmine t h e magnitude o f t h e methane emiss ion and c o n t r o l problem i n U.S. bituminous c o a l mines. The r e s u l t a n t d a t a i n d i c a t e t h a t t h e emiss ion r a t e f o r any g iven coa lbed depends p r i m a r i l y on t h e c o a l p roduc t ion r a t e and on mine d e p t h , a s w e l l a s on t h e n a t u r e o f t h e coa lbed and t h e su r rounding s t r a t a . An e x c e l l e n t c o r r e l a t i o n was found between (1) t h e methane emiss ion r a t e and (2) t h e product o f c o a l p roduc t ion r a t e and mine dep th f o r t h e mines i n t h e P i t t s b u r g h , Pocahontas Nos. 3 and 4 , and t h e I l l i n o i s Nos. 5 and 6 coa lbeds .

The h i g h e s t t o t a l emiss ion r a t e s found i n U.S. bituminous c o a l mines were a s f o l l o w s , i n m i l l i o n c u b i c f e e t per day: Monongalia County, W . Va., 39; Marion County, W . Va., 30.4; McDowell County, W . Va., 13.1; Washington County, Pa. , 11.9; Greene County, Pa. , 11.4; Buchanan County, Va., 21.6; J e f f e r s o n County, A l a . , 10.3; and F r a n k l i n County, Ill., 6.6 .

1 Methane i n a i r h a s long been a hazard t o mine s a f e t y because o f i t s 1 1 e x p l o s i v e q u a l i t i e s , and t h e Bureau of Mines has engaged i n methane s t u d i e s 1 s i n c e i t s e s t a b l i s h m e n t i n 1910. One o f t h e e a r l i e s t s t u d i e s was a c t u a l l y begun i n 1907 under t h e immediate s u p e r v i s i o n o f D r . J . A. Holmes, who subsequen t ly became t h e f i r s t d i r e c t o r of t h e Bureau o f mine^.^ That s t u d y was made " t o o b t a i n i n f o r m a t i o n on t h e o r i g i n o f t h e inflammable gases i n c o a l and t h e c o n d i t i o n s under which t h e y occur . " Data were o b t a i n e d from t h e a n t h r a c i t e f i e l d s i n Pennsylvania and t h e s o u t h e r n bituminous f i e l d s i n I l l i n o i s .

lMining eng ineer . 2 P h y s i c i s t .

1 3Supervisory g e o l o g i s t . I 4Superv i sory r e s e a r c h chemis t . 1 Dar ton, N. H. Occurrence o f Explos ive Gases i n Coal Mines. BuMines

B u l l . 7 2 , 1915, 248 pp.

The e x t e n t t o which methane gas emiss ion w i l l be a problem i n t h e f u t u r e , e s p e c i a l l y i n t h e underground mining o f subbituminous c o a l s and l i g n i t e s , has n o t y e t been determined. However, t h e d a t a p resen ted i n t h i s r e p o r t shou ld a s s i s t i n p lanning new mine development i n the v i c i n i t y o f o p e r a t i n g mines f o r which methane emiss ion r a t e s a r e known and i n planning e f f e c t i v e methane c o n t r o l procedures .

ACKNOWLEDGMENTS

The a u t h o r s e x p r e s s t h e i r a p p r e c i a t i o n t o t h e d i s t r i c t and s u b d i s t r i c t managers, s u p e r v i s o r s , and i n s p e c t o r s of t h e Coal Mine Heal th and S a f e t y branch o f t h e F e d e r a l Bureau o f Mines, who w i l l i n g l y c o n t r i b u t e d t h e i r t ime and exper ience . The s u c c e s s f u l complet ion o f t h i s s t u d y would n o t have been p o s s i b l e w i t h o u t t h e i r c o o p e r a t i o n . F u r t h e r , s p e c i a l c r e d i t i s due Miss Rose Marie Como, who c o l l e c t e d and t a b u l a t e d in format ion from F e d e r a l mine i n s p e c - t i o n r e p o r t s , and t o M r . James L. Joyce , who checked t h e t a b u l a t e d d a t a and prepared many of t h e graphs inc luded here .

DESCRIPTION OF U.S. COALBEDS

Geographical D i s t r i b u t i o n

Geograph ica l ly , c o a l i s found i n t h e conterminous Uni ted S t a t e s border ing t h e A t l a n t i c and P a c i f i c Oceans, t h e Gulf o f Mexico, Mexico, and t h e Dominion of Canada; i t i s found i n t h e mountain p r o v i n c e s , t h e C o a s t a l P l a i n s , and t h e n o r t h e r n Great P l a i n s . Although c o a l mining i s commonly known t o be a major i n d u s t r y o n l y i n Appalachia and t h e c o a l b a s i n s of I l l i n o i s - I n d i a n a , c o a l i s now being mined i n 24 of t h e 34 conterminous S t a t e s which have s i g n i f i c a n t c o a l r e s o u r c e s .

According t o A v e r i t t Y G c o a l - b e a r i n g rocks u n d e r l i e about 1 4 percen t of t h e l a n d a r e a of t h e 48 conterminous S t a t e s . F igure 1, f a m i l i a r t o most persons concerned w i t h c o a l r e s o u r c e s , shows t h e geographic d i s t r i b u t i o n o f U . S . c o a l f i e l d s . However, i t i s more u s e f u l t o examine t h i s map i n c o n j u n c t i o n w i t h f i g u r e 2 , a l s o from A v e r i t t Y 7 which shows t h e d i s t r i b u t i o n of t h e remaining c o a l r e s o u r c e s i n t h e v a r i o u s S t a t e s .

Coal Resources and Methane Emission

A l l coalbeds c o n t a i n methane. This gas i s formed from p l a n t m a t e r i a l s by biochemical and b a c t e r i a l t r a n s f o r m a t i o n s dur ing t h e peat s t a g e of c o a l d e p o s i t i o n and subsequen t ly by metamorphic p rocesses as b u r i e d peat i n c r e a s e s i n rank t o become c o a l . Because of t h e f i n e pore s t r u c t u r e o f c o a l and degraded p e a t , t h e s o r p t i v e c a p a c i t y o f such subs tances i s v e r y l a r g e so t h a t much of t h e methane evolved d u r i n g c o a l i f i c a t i o n i s h e l d i n t h e pea t and i n t h e c o a l . The a c t u a l amount of methane r e t a i n e d i n t h e c o a l depends a l s o

G A v e r i t t , Pau l . Coal Resources of t h e United S t a t e s January 1, 1967. U.S. Geol. Survey B u l l . 1275, 1969, 116 pp.

?Work c i t e d i n f o o t n o t e 6 .

FIG

UR

E 1

. -

Co

alf

ield

s o

f th

e C

on

term

ino

us

Un

ite

d S

tate

s.

COAL HESOTTIICES O F T H E UNITED STATES

BILLIONS OF SHORT TONS 100 QUADRILLIONS OF BRITISH

THERMAL UNITS 1 0 2620

North Dakota

Montana

Illinois

Alaska 2

Wyoming 2

West Virginia

Colorado 3

Pennsylvania

Kentucky

New Mexico 3

Ohio

Indiana

Utah EXPLANATION

Missouri B m Bituminous coal

Kansas

Alabama

Texas

Virginia 3

v//n Subbituminous coal

LC::iiiii:l

Lignite - Anthracite and semianthracite

Iowa Upper bar shows coal resources by tons; lower bar by Btu Conversion factors: anthracite, 12,700 Btu per pound; bituminous

coal, 13,100 Btu per pound; subbituminous coal, 9,500 Btu Washington 3 per pound; and lignite, 6,700 Btu per pound

2 Small resources of lignite included with subbituminous coal Oklahoma 3 Includes anthracite in quantities too small t o show on scale of

diagram 4 Includes Arizona, California, Georgia, Idaho, Louisiana, Michigan,

Tennessee North Carolina, and Oregon

Arkansas 3 I I I

Maryland I I South Dakota $ L

FIGURE 2. - Remaining Coal Resources of the United States as Determined by Mapping and Exploration, January 1, 1967, by State, Accord ing t o Tonnage and Heat Va lue.

I I

on t h e depth of overburden, t h e h y d r o s t a t i c head, and the loca t ion of f a u l t s and f r e e su r f aces . When a coalbed i s mined and t h e equi l ibr ium condi t ions change, methane w i l l migra te from t h e coalbed i n t o the ac t i .ve mine workings.

As of January 1, 1967, coa l resources of t he United S t a t e s (excluding Hawaii) wi th l e s s than 3,000 f e e t of overburden, as determined by mapping

8 and exp lo ra t ion , t o t a l e d about 1.56 X 10'' s h o r t tons. A more r ecen t survey es t imated resources of s t r i p p a b l e coa l and l i g n i t e i n the United S t a t e s t o be

9 2.21 X 1011 tons o f coa l a s of January 1, 1968. These d a t a can be used t o e s t ima te the magnitude of t he resources of nons t r ippable coa l - - the coa l t h a t can be expected t o con ta in s i g n i f i c a n t amounts of methane t h a t must be e i t h e r d i l u t e d t o s a f e and manageable concent ra t ions i n t h e mine a i r o r otherwise must be removed from t h e coalbed and the mine environment. Thus, t he coal resources i n a zone l e s s than 3,000 f e e t below the su r f ace t h a t must be considered as p o t e n t i a l l y minable by underground methods a r e about 1 . 3 x lo1" tons.

BILLION SHORT TONS 0 10 20 30 40 5 0 60 7 0 80

EXPLANATION

Remaining resource

Avai lable reserve

0 10 20 30 40 50 60 70 80

FIGURE 3. - Tota l Remaining Strippable Resources and Reserves of Coal and L igni te in the United States, by Rank, as of January 1, 1968.

8Work c i t e d i n footnote 6. 9U.S. Bureau of Mines. S t r ippab le Reserves of Bituminous Coal and L i g n i t e i n

the United S t a t e s . BuMines I n f . C i r c . 8531, 1971, 148 pp.

BILL ION S H O R T T O N S I f resources i n unmapped and o 5 1 0 15 2 0 2 5 3 o 3 5 unexplored a reas a r e t o be / " " ' I I 1 1 considered, 1 . 3 x 1012 tons

p . . . . . - . . . . . . . . . . . . . . . . . . . - . - - - - -

E A S T E R N P R O V I N C E (Appa lach ian Region)

may be added. For t he pur- poses of t h i s r e p o r t , coa l - beds deeper than 3,000 f e e t

I I a r e no t considered.

<" r < <, \ < ,,< ' / ROCKY M O U N T A I N a n d N O R T H E R N G R E A T P L A I N S P R O V I N C E S

P A C I F I C C O A S T P R O V I N C E

A L A S K A

+ L I G N I T E

E X P L A N A T I O N

Bituminous cool resource

Bituminous c o a l reserve

F Subbituminous cool resource

Subbituminous cool reserve

L i g n i t e resource

L i g n i t e r e s e r v e

An examination of f i gu res 3 and 410 shows the resources and reserves of s t r i p p a b l e coa l i n t he United S t a t e s i n t o t a l and by coa l province. The ex ten t t o which methane gas emission w i l l be a problem, e s p e c i a l l y i n the underground mining of subbi tuminous coa l s and l i g n i t e s , has no t ye t been determined. But c e r t a i n l y these k inds of s t u d i e s w i l l i n d i c a t e the d i r e c t i o n t h a t f u t u r e research e f f o r t s should take.

Rela t ionship t o O i l and Gas Deposits

Because coalbeds and coa l -bear ing rocks unde r l i e a s i g n i f i c a n t percentage of the land a r e a of t h e United S t a t e s , and because such

1 a reas a l s o r ep re sen t major

Coal Province, a s of January 1, 1968. above coa l -bear ing rocks. The a r e a l r e l a t i o n s h i p s

I 1 I I I

among o i l , gas , and coa l depos i t s a r e dramat ica l ly shown i n the mult icolored maps of The National ~ t 1 a s . l ' This c l o s e proximity i s o f t e n a problem i n

basins of sedimentary

exp lo i t i ng coa l resources when gas and/or o i l we l l casings pene t r a t e coalbeds

I I I I I 0 5 10 15 2 0 2 5 3 0 3 5 depos i t s , i t i s n o t a t a l l

s u r p r i s i n g t o f i nd s t r a t a FIGURE 4. - Remaining Strippable Resources and Reserves conta in ing o i l and gas

of Coal and Lignite in the United States, by depos i t s below and sometimes

t h a t a r e being mined--or t h a t w i l l be mined--because l a r g e p i l l a r s of coa l must be l e f t t o p ro t ec t the casing from ruptur ing . Furthermore, some poten- t i a l subsurface gas s to rage a reas f o r pumped gas may b e s u b j e c t to i n t e r f e r e n c e

lowork c i t e d i n footnote 9 . ' ~ u . s . Geological Survey. The National At las of the United S t a t e s of

America. 1970, 417 pp.

by f u t u r e c o a l min ing o p e r a t i o n s . Consequen t ly , t h e o p t i m a l development o f t h e f o s s i l ene rgy r e s o u r c e s o f t h i s N a t i o n depends upon e v a l u a t i o n o f t h e i n t e r a c t i o n s induced by t h e e x p l o i t a t i o n o f o u r c o a l , o i l , and g a s d e p o s i t s .

DATA SOURCES

Most o f t h e d a t a i n c l u d e d i n t h i s r e p o r t were o b t a i n e d from F e d e r a l " i n s p e c t i o n r e p o r t s f o r 1971, i n t e r v i e w s w i t h mine o f f i c i a l s , i n t e r v i e w s w i t h F e d e r a l mine i n s p e c t o r s , back f i l e s o f c o a l companies, and c h a r t s from r e c o r d i n g methanometers i n s t a l l e d by t h e F e d e r a l Bureau o f Mines a t a few s e l e c t e d mines . I n f o r m a t i o n a l s o was c o l l e c t e d from p u b l i s h e d and u n p u b l i s h e d r e p o r t s o f t h e Bureau o f Mines and from o t h e r p e r t i n e n t p u b l i c a t i o n s .

PRESENTATION OF DATA

The summaries and c o r r e l a t i o n s o f d a t a o b t a i n e d i n t h i s s t u d y a r e p r e - s e n t e d i n t a b u l a r , g r a p h i c , and e q u a t i o n form. The most comple te s e t o f d a t a i s g i v e n i n append ix 1, which c o n t a i n s a l i s t o f 66 b i tuminous c o a l mines t h a t produce a t l e a s t 1 m i l l i o n c u b i c f e e t o f methane p e r day . I n c l u d e d i n t h i s c o m p i l a t i o n a r e t h e i d e n t i f i c a t i o n and t h i c k n e s s o f t h e c o a l b e d , methane e m i s s i o n and c o a l p r o d u c t i o n r a t e s , v e n t i l a t i o n r a t e , number o f d r i f t s , s h a f t s , and s l o p e s used f o r v e n t i l a t i o n p u r p o s e s , s h a f t d e p t h , and a g e o f mine . I n a d d i t i o n , because i t h a s been used a s a measure o f g a s s i n e s s , t h e r a t i o o f methane e m i s s i o n t o c o a l p r o d u c t i o n r a t e i s i n c l u d e d h e r e ( c o l . 5 ) ; n o t e , however, t h a t t h i s r a t i o i s i n v a r i a b l y h i g h e r t h a n t h e a c t u a l g a s c o n t e n t o f a t o n o f c o a l i n p l a c e , f o r methane e n t e r s t h e v e n t i l a t i n g a i r from t h e a d j a c e n t s t r a t a and t h e unmined c o a l a s w e l l a s from t h a t which i s mined. Methane c o n t i n u e s t o be e m i t t e d i n d e f i n i t e l y a f t e r a l l mining c e a s e s . For example, f i g u r e 5 shows t h e e f f e c t o f a s t r i k e - i n d u c e d i d l e p e r i o d o n a mine i n P e n n s y l v a n i a d u r i n g 1971. The methane e m i s s i o n r a t e dropped from a h i g h o f 1 m i l l i o n c u b i c f e e t p e r day b e f o r e t h e s t r i k e t o a low o f 0 . 7 m i l l i o n c u b i c f e e t p e r day d u r i n g t h e s t r i k e . Fol lowing t h i s i d l e p e r i o d , t h e methane e m i s s i o n r a t e r o s e s t e a d i l y a n d r e a c h e d i t s p r e s t r i k e v a l u e w i t h i n a b o u t 4 weeks.

DAT E

l- a fx z s? m C" 0 5 l" E

w 5 z a I I- W = 0

FIGURE 5. - Effect of an Idle Period on the Methane Emission Rate of an Operating Mine in Pennsylvania.

10 15 2 0 2 5 3 0 5 10 15 2 0 2 5 31 5 10 15 2 0 2 5 30 5 10 15 1- 5ept 1971 0 c t 1971 NO". 1971 d ~ e c . , 9 7 1 4

+ L a + -0

C v, W

2 - - Bituminous coal strike L

l - o

* + =

I 1 I I I I I I I I 1 I I I I I I I

NO Name of mine Methane.cu t t / ton P

I 1 on tour- 3 Maple Creek 4 Somerset 6 0 5 Vesta Na 5 6 Marianna 58 7 Clyde 8 Gateway 9 Nemacolln 10 Robena 1 1 Shannopln I 2 Humphrey No7 N Purwlove 14 Bocksville No l I5 Bbckwille No 2 16 Federal No. 2 /7 Osage No. 3 I8 Arkwright I9 Consol No. 93 20 Federal No l 2 / Loveridge 22 Consol Na9 23 Joanne 24 Consol No. 2 0

LEGEND

Mme m e r t ) . Wundary

- - Pittsburgh coal, depression contours

-- Pittsburgh coal contours. 00-11 tntervals

1301 Elevation above mean sea level. f t

0 10 2 0

Scale. mlles

FIGURE 6. - Locations of Active Mines in the Pittsburgh Coalbed.

Methane emission r a t e d a t a a r e u se fu l i n planning a new mine i n the v i c i n i t y of an ope ra t ing mine f o r which such r a t e s a r e known. For example, f i g u r e 6 shows coal contours , su r f ace e l eva t ions , and t h e loca t ions of a number of a c t i v e mines i n t he P i t t sbu rgh coalbed. These mines a r e i d e n t i f i e d i n the appendixes, which a l s o conta in the cu r r en t methane emission f igu res f o r each mine. Note i n p a r t i c u l a r the inc rease i n methane emission r a t e a s one goes southwest away from the Monongahela River towards deeper cover; t h i s f a c t o r i s considered i n d e t a i l i n t he next s ec t ion .

A l i s t of 199 mines t h a t emit 0 . 1 t o 12.2 m i l l i o n cub i c f e e t o f methane per day i s given i n appendix 2 i n o rde r of decreas ing emission r a t e . As noted i n t h i s appendix, t he se mines l i b e r a t e a t o t a l of 227 m i l l i o n cubic f e e t of methane per day.

Appendix 3 p r e sen t s d a t a on t h e coun t i e s w i th a methane emission r a t e i n excess of 100,000 cubic f e e t per day. Appendix 4 i s a s i m i l a r compila t ion by coa lbed ; inc luded h e r e a r e beds w i t h methane emission r a t e s i n excess of 1 m i l l i o n cubic f e e t per day.

RESULTS AND DISCUSSION

An a n a l y s i s of t h e d a t a i n appendix 1 i n d i c a t e s t h e methane emission r a t e depends p r i m a r i l y on t h e depth of t h e mine and the c o a l product ion r a t e . This i s i l l u s t r a t e d by t h e c h a r t s g iven i n f i g u r e s 7 and 8 , which show t h e p o s i t i v e t r e n d s between t he se v a r i a b l e s f o r mines i n t he I l l i n o i s Nos. 5 and 6 coalbeds ;

No. I

Barbara Kay

Midwest High

River King

(D No. 5

No. 16 0 In Eagle No. l vi o Spartan z

NO. 2 1 (Saline) E

No. 2 0

% Zeigler No. 4 m 5 Hillsboro

$ No. I Macoupin -1

2 Orient No, 4

f Crown

Orient No.6

5 No. 21 (Franklin) E Orient No. 5

No. 2 6

No. 2 4

In land

Orient No.3

I 2 3

METHANE EMISSION, MMcfd

MINE DEPTH, loo f r 0 I 2 3 4 5 6 7

FIGURE 7. - Methane Emiss ion Rate and Average Depth of Mines i n the I l l i no i s Nos. 5 and 6 Coalbeds.

7 1 1 3 a 1

K E Y 0

Mine depth 3

0 Methane emission -0

-0

( 1

0

--O

3

-0

r )

0

0 (

0 ( 1

I

0

0

0

0

0

COAL PRODUCTION, M tpd

0 2 4 6 8 10 12 V-Day No. I

Barbara Kay

No. 16

a No. 5 u

Midwest High 0

In No. 20 V,

3 Sporton

Orient No. 5 z 5 No. l Macoupin m w Zeiqler No. 4

6 Orient No.4 z 2 River King A - Eagle No. I z - Hil lsboro m

NO. 21 (Franklin)

f Crown

No. 2 6

No. 24

Orient No.6

Orient No. 3

K E Y Coal production

0 Methane emission

I 2 METHANE EMISSION, MMcfd

FIGURE 8. - Methane Emission and Coal Production Rates of Mines in the Illinois Nos. 5 and 6 Coalbeds.

~ a r t o n l ~ noted t h e ex i s t ence of a s i m i l a r t r end between depth and t h e amount of methane r e l e a s e d per ton of coa l mined i n sou thern I l l i n o i s . On t h e o t h e r hand, t h e r e appears t o be very l i t t l e c o r r e l a t i o n between methane emission and t h e age (or s i z e ) of t h e mine ( f i g . 9 ) . Combining t h e s e obse rva t i ons , we f i n d an e x c e l l e n t c o r r e l a t i o n between (1) t h e methane emission r a t e (MER) i n

12page 2 2 3 of work c i t e d i n foo tno t e 5.

AGE OF MINE, years

FIGURE 9. - Methane Emission Rate and Age of Mines in the Pittsburgh Coalbed.

0 15 3 0 4 5 6 0 75 90 105 1 I I I I I

Blacksville No. 2

Blacksville No. l o

Federal No. 2 I 0

Maple Creek

Humphrey No. 7 o

Loveridge o

Mathies

Vesta NO. 5

5 Federal No. I 0

Clyde

8 Williams U

I Warwick No. 2

West land 3 m Shannopin 0

Arkwright

E Consol No. 9

Nemacolin

fi Pursglove z 5 Gateway o

No. 93 0

Joanne

Osage No.3

Montour No. 4 o

Marianna No. 58 o

Consol No. 2 0 o

Vesta No.4 4

Somerset No. 60 o I I I 1

0 2 4 6 8 10 12 14

m i l l i o n s o f c u b i c f e e t p e r day and (2) t h e p r o d u c t o f c o a l p r o d u c t i o n r a t e (CPR) i n thousands o f tons p e r day and dep th (D) i n thousands o f f e e t f o r t h e mines i n t h e P i t t s b u r g h (Pgh), Pocahontas Nos. 3 and 4 (Poc), and t h e I l l i n o i s Nos. 5 and 6 (Ill) coalbeds ( f i g s . 10-12). The equa t ions f o r d e t e r m i n i n g methane e m i s s i o n r a t e a r e as f o l l o w s , i n m i l l i o n s o f c u b i c f e e t p e r day:

1

METHANE EMISSION, MMcfd

CO

AL

PR

OD

UC

TIO

N X

DE

PTH

(Mtp

d x

1.0

00 ft

)

FIG

UR

E

10.

- M

etha

ne E

mis

sio

n R

ate

Ve

rsu

s C

oa

l P

rod

uct

ion

Ra

te T

ime

s D

ep

th f

or

Min

es

in t

he

Pit

tsb

urg

h C

oo

Ibed

.

3

4.5

6

CO

AL

PR

OD

UC

TIO

N X

DE

PT

H (

Mtp

d x

1,0

00 f

t)

FIG

UR

E

11.

- Me

tha

ne

Em

iss

ion

Ra

te V

ers

us

Co

al

Pro

du

ctio

n R

ate

Tim

es

De

pth

fo

r M

ine

s in

th

e P

oca

ho

nta

s N

os.

3 a

nd

4 C

oa

lbe

ds.

COAL PRODUCTION X DEPTH ( ~ t p d x 1,000 f t )

FIGURE 12. - Methane Emission Rate Versus Coal Production Rate Times Depth for Mines

in the I l l ino is Nos. 5 and 6 Coalbeds.

MER ( ~ g h ) = -0.649 + 1.67 x CPR x D; 5 r CPR x D 2 0.388 (1)

MER (Poc) = -0.395 + 0.80 x CPR X D; 9 2 CPR X D 2 0.494 (2)

MER ( I l l ) = -0.071 + 0.268 X CPR X D; 1 0 2 CPR X D 2 0.265 ( 3 )

The c o r r e l a t i o n c o e f f i c i e n t s a r e 0.91, 0 .92, and 0 .94 f o r t h e P i t t s b u r g h , Pocahontas , and I l l i n o i s c o a l b e d s , r e s p e c t i v e l y , s o t h a t t h e product of c o a l p r o d u c t i o n r a t e and d e p t h accoun t s f o r over 80 p e r c e n t of t h e v a r i a b i l i t y i n t h e methane emiss ion r a t e s f o r each o f t h e s e coa lbeds . Obviously , t h e methane emiss ion r a t e a l s o i s a f f e c t e d by t h e p resence o f gobs , f a u l t s , nea rby mining o p e r a t i o n s , c l a y v e i n s , and o i l and gas w e l l s .

Note t h a t t h e e q u a t i o n s can be used t o p r e d i c t n o t o n l y methane emiss ion r a t e s b u t a l s o t h e r a t i o s of such r a t e s f o r t h e t h r e e coa lbeds a t a g i v e n dep th . Thus, w i t h a p roduc t ion r a t e o f 5,000 tons per day and a dep th of 1 , 0 0 0 f e e t , t h e r a t i o o f t h e methane emiss ion r a t e s f o r t h e P i t t s b u r g h and Pocahontas beds i s 2 .14 , f o r t h e Pocahontas and I l l i n o i s beds 2.84, and f o r t h e P i t t s b u r g h and I l l i n o i s beds 6 .06 ; t h i s means t h a t t h e e m i s s i o n r a t e o f t h e P i t t s b u r g h bed i s g r e a t e r t h a n t h a t of t h e Pocahontas beds which , i n t u r n , have an emiss ion r a t e g r e a t e r t h a n t h e I l l i n o i s coa lbeds . These r a t i o s may seem o u t o f l i n e i n view of t h e f a c t t h a t t h e q u a n t i t y of methane adsorbed by c o a l a t any g i v e n p r e s s u r e ( o r dep th ) i s g r e a t e s t f o r t h e I l l i n o i s coalbed.

However, we can only conclude t h a t a t l e a s t f o r t he P i t t sbu rgh coalbed, methane emission r a t e s a r e dependent on the permeabi l i ty of the coalbed i t s e l f and on the gas conten t and permeabi l i ty of t he ad j acen t s t r a t a .

Of the t o t a l methane emi t ted by t h e bituminous coa l mines i n t h e con te r - minous United S t a t e s , approximately two-thirds (65.8 percent ) i s emi t ted by the mines i n the P i t t sbu rgh (44.5 pe rcen t ) , Pocahontas No. 3 (14.7 pe rcen t ) , and the I l l i n o i s Nos. 5 and 6 (6.6 percent ) coalbeds. The remainder (34.2 percent ) i s emi t ted by the mines i n t h e o t h e r coalbeds. I n t e r e s t i n g l y , over t h r ee - f o u r t h s (78.9 percent ) o f t he methane emi t ted by the mines i n the conterminous United S t a t e s i s emi t ted by those w i th emission r a t e s of 1 m i l l i o n cubic f e e t o r more per day; 28 mines i n t h i s group emit 92.8 percent of a l l t he methane from t h e P i t t sbu rgh coalbed (appendix 1 ) .

The 199 mines l i s t e d i n appendix 2 emit 227.0 m i l l i o n cubic f e e t of methane per day. An a n a l y s i s o f d a t a from 231 mines wi th measurable methane l i b e r a t i o n r a t e s (but l e s s than 100,000 cubic f e e t per day) i n d i c a t e s t h a t t he se emit only 4.7 m i l l i o n cubic f e e t of methane per day. Of t h e mines i n t he former ca tegory , those i n West V i rg in i a l i b e r a t e 46.6 pe rcen t , those i n Pennsylvania, 19.2 percent , those i n I l l i n o i s , 6.7 percent , and those i n Alabama, 5 .1 percent of t h e t o t a l (appendix 3) . Fu r the r , t he mines i n Monongalia County, W . Va., emit t he l a r g e s t t o t a l volume of methane recorded f o r any county--39 m i l l i o n cubic f e e t per day; mines i n Marion County, W. Va., emit 30.4, and those i n McDowell County, W. Va., emit 13.1 m i l l i o n cubic f e e t of methane per day. I n Pennsylvania, t h e mines i n Washington County emit 11.9 a n d t h o s e i n Greene County, 11.4 m i l l i o n cubic f e e t o f methane per day. I n V i r g i n i a t h e mines i n Buchanan County emit 21.6 m i l l i o n cubic f e e t , wh i l e those i n J e f f e r s o n County, Ala. , emit 10.3 and those i n F rank l in County, Ill., emit 6.6 m i l l i o n cubic f e e t of methane per day (appendix 4 ) .

CONCLUSIONS

Methane emission r a t e d a t a can be r e a d i l y compiled from a v a i l a b l e r epo r t s . I n t u r n , these d a t a can be c o r r e l a t e d wi th t he coa l product ion r a t e and depth f o r any p a r t i c u l a r coalbed. A l i n e a r c o r r e l a t i o n holds f o r t h e P i t t sbu rgh , Pocahontas Nos. 3 and 4 , and I l l i n o i s Nos. 5 and 6 coalbeds. The c o r r e l a t i o n s ob t a ined t o d a t e can be used t o p red i c t the methane emission r a t e and subsequen t ly a s s i s t i n planning e f f e c t i v e methane c o n t r o l procedures i n bituminous coa l mines.

APP

EN

DIX

1.

--C

HA

RA

CT

ER

IST

ICS

O

F U

.S.

COA

L M

INE

S PR

OD

UC

ING

O

VER

1 M

ILL

ION

C

UB

IC F

EE

T

OF

PETH

AN

E PE

R

DA

Y

Age

o

f m

ine

, Y r

64

5 5

60

8

6 7

42

3

53

57

Num

ber

of

dr

ifts

(D

r)

, s

ha

fts

(S

h) ,

and

s

lop

es

(S

l)

1 S

1

7 S

h

6 S

h

9 S

h

1 S

1

4

Sh

1 S

1

6 S

h

10

Dr

3 S

h

1 S

1

1 S

h

1 S

1

5 S

h

1 S

1

3 S

h

Ow

ner

, na

me

of

min

e,

and

lo

ca

tio

n

All

ied

Ch

emic

al

Co

rp.:

S

han

no

n

Bra

nch

min

e

McD

owel

l C

ou

nty

, W

. V

a.

Bet

hle

hem

M

ines

C

orp

.:

No.

3

2

min

e C

amb

ria

Co

un

ty,

Pa.

Ma

ria

nn

a

No.

5

8 m

ine

Wa

shin

gto

n

Co

un

ty,

Pa.

Cam

bri

a S

lop

e 3

3 m

ine

Cam

bri

a C

ou

nty

, P

a.

So

me

rse

t ::o

. 6

0 m

ine

Wa

shin

gto

n

Co

un

ty,

Pa.

Bis

ho

p

Co

al

Co

.:

Bis

ho

p

min

e M

cDow

ell

Co

un

ty,

W.

Va.

Boo

ne

Co

un

ty

Co

al

Co

.:

No.

1 C

edar

G

rov

e m

ine

Lo

gan

C

ou

nty

, Id

. V

a.

The

B

uck

eye

Co

al

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.:

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aco

lin

m

ine

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ene

Co

un

ty,

Pa.

(m

ine

on

fir

e)

.

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nc

hfi

eld

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al

Co.

:

Mos

s N

o.

2 m

ine

Ru

ss

ell

C

ou

nty

, V

a.

Av

erag

e m

eth

an

e

em

issi

on

in

24

hr,

m

illi

on

cu

f

t

2.1

6.0

2.3

1.9

1.5

1.0

1.2

1.0

1.8

Av

erag

e d

ep

tho

f s

ha

ft1

an

d

slo

pe

,"

f t -

700

65

6

(35

8-9

55

)

399

(38

5-4

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)

- 75

3

(65

0-8

57

)

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05

(45

0-

76

0)

- 70

0 - 5

00

- 4

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(4

45

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8)

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50

(1

00

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)

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alb

ed

Po

ca

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nta

s N

os.

3

an

d 4

.

Low

er

Kit

tan

nin

g

Pit

tsb

urg

h ..

....

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er

Kit

tan

nin

g

Pit

tsb

urg

h ..

....

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ca

ho

nta

s N

os.

3

, 4

, an

d

5.

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ar

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ve ..

...

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tsb

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h..

. . .

.

Til

ler ..

....

....

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ily

c

oa

l p

rod

uc

- ti

on

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ns

3,8

00

3,0

00

7,3

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4,5

30

5,2

17

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00

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ick

- n

ess

o

f c

oa

l-

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d,

in

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60

60

42

48

48

-60

48

50

60

Cu

ft

o

fg

as

p

er

ton

o

f c

oa

l m

ined

54

7

1,9

89

296

41

6

2 79

15

0

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1

17

1

42

3

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an

tity

o

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ted

in

24

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on

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f

t

2,8

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85

4

88

5

772

96 2

9 1

4

4 7

4

1,3

44

73

3

Moss No.

3 mine (Portal A)

Dickenson County, Va.

Consolidation Coal Co.

(Blacksville Div. ) :

Blacksville No. 1 mine

Monongalia County, W.

Va,

Blacksville No.

2 mine


Va.


(Chris topher Coal Co . )

: Humphrey No. 7 mine


Va.

Osage No. 3 mine


Va.

Arkwright mine


Va.

Pursglove mine


Va.


. (Mountaineer Coal Co.):

Lover idge mine

Marion County, W.

Va.

Consol No. 9 mine

Marion County, W.

Va.

Williams mine

Harrison County, W.

Va.

... do

. ...

......

.

Pittsburgh.. .

...

... do

..........

.

... do

....

....

...

, ... do. ..

....

....

....

....

...

... do

....

....

..

... do

.

....

....

. ..

. do..

Consol No.

20

mine

...

......

.....

I do

Marion County, W.

Va.

1 See footnotes at end of table.

(Mine explosion November 1968. Mine being recovered.)

Ow

ner,

na

me

of

min

e,

and

lo

ca

tio

n

Co

nso

lid

ati

on

C

oal

C

o.

(Mo

un

tain

eer

Co

al

Co . )

(C

on

. ) :

No.

9

3 m

ine

Mar

ion

Co

un

ty,

W.

Va.

Ro

bin

son

Run

N

o.

95 m

ine

Ha

rris

on

C

ou

nty

, W

. V

a.

Co

nso

lid

ati

on

Co

al

Co.

(O

hio

V

all

ey

Div

.) :

Ire

lan

d M

ine

Ma

rsh

all

Co

un

ty,

W.

Va.

Co

nso

lid

ati

on

Co

al

Co.

(P

itts

bu

rgh

Co

al

Co

.) :

Mo

nto

ur

No.

4

min

e W

ash

ing

ton

C

ou

nty

, P

a.

Ea

ste

rn A

sso

cia

ted

C

oal

C

orp

.:

Fe

de

ral

No.

2

min

e M

on

on

gal

ia C

ou

nty

, W

. V

a.

Fe

de

ral

No.

1 m

ine

Mar

ion

Co

un

ty,

W.

Va.

Joa

nn

e m

ine

Mar

ion

Co

un

ty,

W.

Va.

Key

s to

ne

No.

1 m

ine

McD

owel

l C

ou

nty

, W

. V

a.

Fre

en

an

C

oal

M

inin

g C

orp

. :

Ori

en

t N

o.

3 m

ine

Je

ffe

rso

n C

ou

nty

, Ill.

Ori

en

t N

o.

6 m

ine

Je

ffe

rso

n C

ou

nty

, Ill.

Co

alb

ed

....

...

Pit

tsb

urg

h

... do

....

....

...

Pit

tsb

urg

h N

o.

8.

Pit

tsb

urg

h ..

....

.

... d

o ..

....

....

..

... do

....

....

....

... d

o ..

....

....

..

Po

ca

ho

nta

s N

o.

3.

Ill

ino

is N

o.

6. ..

... d

o ..

....

....

..

Da

ily

c

oa

l p

rod

uc

- ti

on

, to

ns

3,8

00

9,0

00

9,6

66

8,4

50

4,7

00

7,6

66

3,5

85

6,5

00

11

,27

7

8,9

50

Th

ick

- n

ess

o

f c

oa

l-

be

d,

in

76

72

-92

62

52

90

82

84

60

10

1

10

8

Av

erag

e m

eth

ane

em

issi

on

in

24

hr

, m

illi

on

cu

f

t

1.2

1.1

1.8

1.1

8.1

5.1

2.0

1.8

1.9

1.0

!- m

Age

o

f m

ine

, Y

r

55

5

16

58

4

29

55

7 1

25 4

Cu

ft

o

f g

as

pe

r to

n o

f c

oa

l m

ined

31

2

12

7

18

8

13

0

1,7

22

66

5

54

4

28

0

16

7

11

3

Num

ber

of

dr

ifts

(D

r),

sh

aft

s

(Sh

) ,

and

s

lop

es

(S

l)

2 D

r 2

Sh

10

Dr

1 S

h

2 S

1

6 S

h

2 S

1

6 S

h

3 S

h

8 S

h

4

Sh

1 S

1

2 D

r 7

Sh

2 S

1

3 S

h

2 S

h

Qu

an

tity

o

f a

ir

cir

cu

late

d

in 2

4 h

r,

mil

lio

n

cu

ft

709

6 9

4

1,6

30

95

8

1,3

31

1,6

96

7 3

8

2,0

01

41

1

84

4

Av

erag

e d

ep

th

of

sha

ft1

an

d

slo

pe

,"

ft

- 2

26

(20

1-2

52

)

- 3

00

- 3

70

- 1

45

(9

2-1

98

)

7 88

(7

34

-84

2)

44

8

(26

0-6

37

)

40

4

(35

4-4

5 5

)

- - 70

0 - 8

00

53

0

Cro

wn

min

e M

on

tgo

mer

y

Co

un

ty,

Ill.

Gat

eway

C

oal

C

o. :

Gat

eway

min

e G

reen

e C

ou

nty

, P

a.

Gle

n N

an

Co

al

Co.

:

Fo

rge

S

lop

e m

ine

Lu

ze

rne

C

ou

nty

, P

a.

He

lve

tia

Co

al

Co.

(R

och

es t

er

an

d

Pit

tsb

urg

h

Co

al

Co

.):

Lu

ce

rne

N

o.

6 m

ine

Ind

ian

a C

ou

nty

, P

a.

How

e C

oal

C

o.:

H

owe

No.

1 m

ine

Le

Flo

re C

ou

nty

, O

kla

. (M

ine

clo

sed

Nov

embe

r 1

97

1).

Inla

nd

S

tee

l C

o.:

In

lan

d m

ine

Je

ffe

rso

n C

ou

nty

, Ill.

Isla

nd

Cre

ek

Co

al

Co

.:

Vir

gin

ia

Po

ca

ho

nta

s N

o.

1 m

ine

Bu

chan

an

Co

un

ty,

Va.

Vir

gin

ia

Po

ca

ho

nta

s N

o.

3 m

ine

Bu

chan

an

Co

un

ty,

Va.

Isla

nd

Cre

ek

Co

al

Co.

(B

ea

tric

e P

oc

ah

on

tas

Co.

) :

Be

atr

ice

min

e B

uch

anan

C

ou

nty

, V

a.

Isla

nd

Cre

ek

Co

al

Co.

(V

irg

inia

Po

ca

ho

nta

s Co

. ) :

Vir

gin

ia

Po

ca

ho

nta

s N

o.

2 m

ine

Bu

chan

an

Co

un

ty,

Va.

I tm

ann

C

oal

C

o . :

It

ma

nn

No.

3

min

e W

yom

ing

Co

un

ty,

W.

Va.

S

ee

fo

otn

ote

s a

t e

nd

o

f ta

ble

.

... do

....

....

...

....

..

Pit

tsb

urg

h

Tw

in,

Bo

tto

mR

oss

B

ott

om

Red

A

sh

Up

per

F

ree

po

rt..

Low

er

Ha

rtsh

orn

e

Ill

ino

is N

o.

6. .

Po

ca

ho

nta

s N

o.

3

... d

o ..

....

....

.

... do

.. ..

....

...

Ow

ner

, na

me

of

min

e,

and

lo

ca

tio

n

Jon

es

& L

au

gh

lin

S te

e1

Co

rp.

(Ves

ta-S

ha

nn

op

in

Co

al

Div

. ) :

Sh

an

no

pin

min

e G

reen

e C

ou

nty

, P

a.

Ve

sta

No.

5

min

e

Was

hin

gto

n

Co

un

ty,

Pa.

Ma

thie

s C

oal

C

o. :

Ma

thie

s m

ine

Was

hin

gto

n

Co

un

ty,

Pa.

Mid

-Co

nti

ne

nt

Co

ala

nd

Co

ke

Co

.:

L.

S.

Woo

d m

ine

Pi t

kin

Co

un

ty,

Co

lo .

Du

tch

C

reek

min

e P

itk

in C

ou

nty

, C

olo

.

No

rth

A

mer

ican

C

oal

C

o.

(He

len

Min

ing

C

o.)

: H

omer

C

ity

min

e In

dia

na

Co

un

ty,

Pa.

Old

B

en

Co

al

Co.

:

No.

2

1 m

ine

Fra

nk

lin

Co

un

ty,

Ill.

No.

24

m

ine

Fra

nk

lin

Co

un

ty,

Ill.

No.

26

m

ine

Fra

nk

lin

C

ou

nty

, Ill.

Co

alb

ed

Pit

tsb

urg

h. ..

....

... do

....

....

...

... d

o..

....

....

..

Ba

sin

"B

". ..

....

.

.. .d

o..

....

....

..

Up

per

F

ree

po

rt ..

.

Ill

ino

is N

o.

6..

.

... do

....

....

....

... d

o ..

....

....

.. T

hic

k-

ne

ss

of

co

al-

b

ed

, in

56

84

42

81

81

50

10

5

10

0

10

2

Av

erag

e m

eth

an

e

em

issi

on

i

n 2

4 h

r,

mil

lio

n

cu

ft

2.9

1.9

1.8

3.5

3.2

1.6

2.4

2.0

1.8

Da

ily

c

oa

l p

rod

uc

- ti

on

, to

ns

5,3

77

2,9

25

9,4

75

1,1

25

1,3

50

2,1

00

8,0

00

9,1

00

8,6

60

Qu

an

tity

o

f a

ir

c

irc

ula

ted

in

24

hr

, m

illi

on

cu

f

t

1,8

75

1,2

29

1,6

25

59

2

76 3

53

9

64

7

53

7

5 7

0

Cu

ft

o

f g

as

pe

r to

n o

f c

oa

l m

ined

53

0

65

8

19

0

3,1

11

2,3

59

76 6

30

2

21

8

202

Num

ber

of

dr

ifts

(D

r),

sh

aft

s

(Sh

),

and

s

lop

es

(S

l)

10

Dr

5

Sh

1 S

1

7 D

r 6

S

h

1 D

r 7

Sh

6

S1

0

Sh

6

S1

0

S

h

1 S

1

1 S

h

3 S

h

2 S

h

2 S

h

Av

erag

e d

ep

th o

f sh

aft

1

and

s

lop

eY

2

ft

- 22

5 (0

-45

0)

- - 25

0

(0-5

00

)

- 1

75

(0

-35

0)

(0-2

,50

0)

-

(0-2

,50

0)

- - 6

08

60

0

66

0

66

0

Age

o

f m

ine

, Y

r

45

2 9

28 7

16

3

11

7

4

Ow

ner

, na

me

of

min

e,

an

d

loc

ati

on

We

stm

ore

lan

d C

oa

l C

o. :

Ham

pton

N

o.

3 m

ine

Bo

on

e C

ou

nty

, W

. V

a.

Win

din

g

Gu

lf

Co

als

, In

c.:

E

as

t G

ulf

m

ine

Ra

leig

h C

ou

nty

, W

. V

a.

Woo

dwar

d C

o.

(Div

. o

f M

ead

Co

rp.)

: M

ulg

a m

ine

Je

ffe

rso

n C

ou

nty

, A

la.

Yo

ug

hio

gh

eny

a

nd

Oh

io C

oa

l C

o . :

N

elm

s N

o.

1 m

ine

Ha

rris

on

Co

un

ty,

Oh

io.

Nel

ms

No.

2

min

e H

arr

iso

n

Co

un

ty,

Oh

io.

Co

alb

ed

n

es s

of

co

al-

b

ed

,

Ced

ar

Gro

ve

....

..

42

-30

I

Po

ca

ho

nta

s N

o.

3.

65

No.

6A

....

....

...

I I

lIte

ms

in

pa

ren

the

ses

ind

ica

te r

an

ge

of

sh

aft

de

pth

.

36

-12

0

Low

er

Fre

ep

ort

...

Av

era

ge

m

e th

an

e

em

issi

on

in

24

hr

, m

illi

on

cu

f

t

1.6

1.0

1.5

1.7

1.3

6

0

co

al

of

ga

s T

p

rod

uc

- p

er

tio

n,

I ton o

f

min

ed 2

Qu

an

tity

o

f a

ir

cir

cu

late

d

in 2

4 h

r,

mil

lio

n

cu

ft

Num

ber

of

dr

ifts

(D

r),

sh

aft

s

(Sh

),

and

s

lop

es

(S

l)

Av

erag

e d

ep

th

of

sha

f t1

an

d

slo

pe

,"

f t

Age

o

f m

ine

, Y r

"1te

ms

in p

are

nth

ese

s in

dic

ate

ra

ng

e

of

slo

pe

de

pth

.

APPENDIX 2.--MEASURED METHANE EMISSION FROM COAL MINES OF THE UNITED STATES WITH AN EMISSION RATE OF AT LEAST 100,000 C U B I C FEET PER DAY

Average me thane emiss ion per day, Mine, owner, and l o c a t i o n of mine m i l l i o n c u b i c f e e t

Lover idge mine C o n s o l i d a t i o n Coal Co. Marion County, W. Va.

Humphrey No. 7 mine C o n s o l i d a t i o n Coal Co. Monongalia County, W. Va.

B e a t r i c e mine I s l a n d Creek Coal Co. Buchanan County, Va.

F e d e r a l No. 2 mine E a s t e r n A s s o c i a t e d Coal Corp. Monongalia County, W . Va.

Consol No. 9 mine C o n s o l i d a t i o n Coal Co. Marion County, W . Va.

Osage No. 3 mine C o n s o l i d a t i o n Coal Co. Monongalia County, W. Va.

V i r g i n i a Pocahontas No. 1 mine I s l a n d Creek Coal Co. Buchanan County, Va.

Concord No. 1 mine U.S. S t e e l Corp. J e f f e r s o n County, Ala.

No. 32 mine Bethlehem Mines Corp. Cambria County, Pa.

B l a c k s v i l l e No. 1 mine C o n s o l i d a t i o n Coal Co. Monongalia County, W . Va.

F e d e r a l No. 1 mine E a s t e r n Assoc ia ted Coal Corp. Marion County, W . Va.

Mine, owner, and l o c a t i o n of mine

Robena mine U.S. S t e e l Corp. Greene County, Pa.

L. S. Wood mine Mid-Continent Coal and Coke Co. P i t k i n County, Colo.

Arkwright mine Consol ida t ion Coal Co. Monongalia County, W. Va.

Dutch Creek mine Mid-Continent Coal and Coke Co. P i t k i n County, Colo.

V i rg in i a Pocahontas No. 2 mine I s l a n d Creek Coal Co. Buchcnan County, Va.

V i rg in i a Pocahontas No. 3 mine I s l and Creek Coal Co. Buchanan County, Va.

Shannopin mine Jones & Laughlin S t e e l Corp. Greene County, Pa.

Gateway mine Gateway Coal Co. Greene County, Pa.

B lacksv i l l e No. 2 mine Consol idat ion Coal Co. Monongalia County, W. Va.

No. 14 mine U.S. S t e e l Corp. McDowell County, W. Va.

No. 21 mine Old Ben Coal Co. F rank l in County, Ill.

Marianna No. 58 mine Bethlehem Mines Corp. Washington County, Pa.

Olga mine Olga Coal Co. McDowell County, W . Va.

Average methane emission per day, m i l l i o n cubic f e e t

Mine, owner, and l o c a t i o n o f mine

Shannon Branch mine A l l i e d Chemical Corp. McDowell County, W . Va.

No. 2 mine U.S. S t e e l Corp. McDowell County, W . Va.

Joanne mine E a s t e r n Assoc ia ted Coal Corp. Marion County, W . Va.

No. 24 mine Old Ben Coal Co. F r a n k l i n County, Ill.

Lucerne No. 6 mine Roches t e r and P i t t s b u r g h Coal Co. ( H e l v e t i a Coal Co.) I n d i a n a County, Pa.

Ves ta No. 5 mine Jones & Laughl in S t e e l Corp. Washington County, Pa.

Cambria S lope No. 33 mine Bethlehem Mines Corp. Cambria County, Pa.

O r i e n t No. 3 mine Freeman Coal Mining Corp. J e f f e r s o n County, Ill.

Mathies mine Mathies Coal Co. Washington County, Pa.

Moss No. 2 mine C l i n c h f i e l d Coal Co. R u s s e l l County, Va.

I r e l a n d mine C o n s o l i d a t i o n Coal Co. Marsha l l County, W . Va.

Keystone No. 1 mine E a s t e r n Assoc ia ted Coal Corp. McDowell County, W. Va.

Average m e thane emiss ion p e r day, m i l l i o n c u b i c f e e t

Average methane e m i s s i o n D e r dav. Mine, owner, and l o c a t i o n o f mine

No. 26 mine Old Ben Coal Co. F r a n k l i n County, I l l .

Nelms No. 1 mine The Youghiogheny and Ohio Coal Co. H a r r i s o n County, Ohio

Howe No. 1 mine Howe Coal Co. Le F l o r e County, Okla.

Homer C i t y mine North American Coal Co. (Helen Mining Co. ) I n d i a n a County, Pa.

Hampton No. 3 mine Wes tmoreland Coal Co. Boone County, W . Va.

Mulga mine Woodward Co., D i v i s i o n o f Mead Corp. J e f f e r s o n County, Ala .

Somerset No. 60 mine Bethlehem Mines Corp. Washington County, Pa.

Forge S lope mine Glen Nan Coal Co. Luzerne County, Pa.

Moss No. 3 mine ( p o r t a l A) C l i n c h f i e l d Coal Co. Dickenson County, Va.

Consol No. 20 mine C o n s o l i d a t i o n Coal Co. Marion County, W. Va.

Nelms No. 2 mine Youghiogheny and Ohio Coal Co. H a r r i s o n County, Ohio

V a l l e y Camp No. 3 mine V a l l e y Camp Coal Co. Ohio County, W . Va.

-

m i l l i o n c u b i c f e e t

1 . 8

A v e r a ~ e methane emission Der dav. Mine, owner, and l o c a t i o n of mine

Pursglove mine Consol ida t ion Coal Co. Monongalia County, W . Va.

No. 93 mine Consol ida t ion Coal Co. Marion County, W . Va.

No. 1 Cedar Grove mine Boone County Coal Co. Logan County, W. Va.

Clyde mine Republic S t e e l Corp. Washington County, Pa.

Sunnyside No. 1 mine U.S. S t e e l Corp. Carbon County, Utah

Ma.ple Creek mine U.S. S t e e l Corp. Washington County, Pa.

Bess ie mine U.S. Pipe and Foundry Co. J e f f e r s o n County, Ala.

Montour No. 4 mine Consol ida t ion Coal Co. Washington County, Pa.

Robinson Run No. 95 mine Consol ida t ion Coal Co. Harr ison County, W. Va.

In l and mine In land S t e e l Co. J e f f e r s o n County, Ill.

Itmann No. 3 mine Itmann Coal Co. Wyoming County, W . Va.

Crown mine Freeman Coal Mining Corp. Montgomery County, I l l .

m i l l i o n cubic f e e t


Bishop mine Bishop Coal Co. McDowell County, W . Va.

Eas t Gulf mine Winding Gulf Coals , I nc . Raleigh County, W . Va.

Nemacolin mine Buckeye Coal Co. Greene County, Pa.

Will iams mine Consol ida t ion Coal Co. Har r i son County, W . Va.

Or i en t No. 6 mine Freeman Coal Mining Corp. J e f f e r s o n County, I l l .

F l a t Top mine U.S. Pipe and Foundry Co. J e f f e r s o n County, Ala.

Maitland mine Consol ida t ion Coal Co. McDowell County, W. Va.

Kenilwor t h mine North American Coal Corp. Carbon County, Utah

Newfield mine Republic S t e e l Corp. Allegheny County, Pa.

Lancash i re No. 20 mine Barnes & Tucker Co. Cambria County, Pa.

Compass No. 2 mine C l i n c h f i e l d Coal Co. Har r i son County, W . Va.

McElroy mine Consol ida t ion Coal Co. Marshal l County, W. Va.

Average me thane emiss ion per day, m i l l i o n cubic f e e t

Mine, owner, and l o c a t i o n of mine

Segco No. 1 mine Southern E l e c t r i c Generating Co. Walker County, Ala.

Thunderbird mine Ayrsh i re Coal Co. S u l l i v a n County, Ind.

Powhatan No. 1 mine North American Coal Corp. Belmont County, Ohio

Lambert Fork mine Clinchf i e l d Coal Co. Buchanan County, Va.

Lancashire No. 24 mine Barnes 6 Tucker Co. Ind iana County, Pa.

Somerset mine U.S. S t e e l Corp. Gunnison County, Colo.

No. 10 mine S l ab Fork Coal Co. Raleigh County, W . Va.

Bird No. 2 mine I s l a n d Creek Coal Co. Somerset County, Pa.

Renton mine Consol ida t ion Coal Co. Allegheny County, Pa.

F i e s mine I s l a n d Creek Coal Co. Hopkins County, Ky.

Moss No. 3 , P o r t a l C mine C l i n c h f i e l d Coal Co. Dickenson County, Va.

Or ien t No. 4 mine Freeman Coal Mining Corp. Williamson County, I l l .


Mine. owner. and l o c a t i o n o f mine Average me thane emiss ion per day,


Wes t l a n d mine P i t t s b u r g h Coal Co. Washington County, Pa.

Itmann No. 4 mine Itmann Coal Co. Wyoming County, W. Va.

Murdock mine Moffat Coal Co. Douglas County, Ill.

Rose V a l l e y No. 6 mine C o n s o l i d a t i o n Coal Co. Har r i son County, Ohio

Mars No. 2 mine C l i n c h f i e l d Coal Co. Har r i son County, W . Va.

Sewel l No. 4 mine Sewel l Coal Co. Nicholas County, W . Va.

Banning No. 4 mine Republ ic S t e e l Corp. Wes tmoreland County, Pa.

Kepler mine C o n s o l i d a t i o n Coal Co. Wyoming County, W. Va.

B i r d No. 3 mine I s l a n d Creek Coal Co. Cambria County, Pa.

Marion mine Tunnel ton Mining Co. I n d i a n a County, Pa.

Alexander mine V a l l e y Camp Coal Co. Marsha l l County, W . Va.

J a n e Nos. 1 and 2 mines Roches t e r and P i t t s b u r g h Coal Co. Arms t r o n g County , Pa.


Ze ig l e r No. 9 mine Ze ig l e r Coal Co. Hopkins County, Ky.

No. 10 mine Peabody Coal Co. C h r i s t i a n County, 111.

S lab Fork No. 8 mine S l ab Fork Coal Co. Raleigh County, W. Va.

Ze ig l e r No. 4 mine B e l l and Z o l l e r Coal Co. Williamson County, Ill.

S i l t i x mine The New River Co. Faye t t e County, W. Va.

Ecc les No. 5 mine Wes tmoreland Coal Co. Raleigh County, W. Va.

Lady Dunn NO. 105 mine Cannelton Coal Co. Kanawha County, W. Va.

Do t ik i mine Webster County Coal Corp. Webster County, Ky.

J e n s i e mine North American Coal Corp. J e f f e r s o n County, Ohio

Or i en t No. 5 mine Freeman Coal Mining Corp. F rank l in County, 111.

Chetopa mine Alabama By-Products Corp. J e f f e r s o n County, Ala.

Hampton No. 4 mine Wes tmoreland Coal Co. Boone County, W . Va.


Average methane emiss ion per dav. Mine. owner. and l o c a t i o n of mine m i l l i o n c u b i c f e e t

No. 34 mine Carbon Fuel Co. Kanawha County, W. Va.

No. 1 mine Monterey Coal Co. Macoupin County, 111.

Keystone No. 2 mine E a s t e r n Assoc ia ted Coal Corp. WyomingCounty, W. Va.

A l l e n mine CF and I S t e e l Corp. Las Animas County, Colo.

Sewel l No. 1 mine Sewel l Coal Co. Nicholas County, W. Va.

Drake No. 1 mine P i t t s b u r g & Midway Coal Mining Co. Muhlenberg County, Ky.

E a s t Diamond mine I s l a n d Creek Coal Co. Hopkins County, Ky.

Segco No. 2 mine Southern E l e c t r i c Genera t ing Co. Shelby County, Ala.

Dehue mine Youngstown Mines Corp. Logan County, W . Va.

No. 3 mine Wolf Creek C o l l i e r i e s Co. Mar t in County, Ky.

No. 44 mine Bethlehem Mines Corp. Marion County, W . Va.

Warwick No. 2 mine Duquesne L i g h t Co. , Coal Dept. Greene County, Pa.

Mine. owner. and l o c a t i o n of mine Average methane emiss ion per day,

m i l l i o n cub i c f e e t

Badger No. 14 mine Badger Coal Co. Barbour County, W. Va.

Keystone No. 4 mine E a s t e r n Assoc ia ted Coal Corp. Ra le igh County, W . Va.

Eag le No. 2 mine Peabody Coal Co. G a l l a t i n County, Ill.

No. 25 mine Na t i ona l Coal Mining Co. Mingo County, W . Va.

P r e s c o t t No. 1 mine Wes tmoreland Coal Co. Wise County, Va.

Crescen t mine I s l a n d Creek Coal Co. Muhlenberg County, Ky.

Macalpin mine Wes tmoreland Coal Co . Rale igh County, W . Va.

B u l l i t t No. 1 mine Wes tmoreland Coal Co . Wise County, Va.

Choctaw Coal F a c i l i t y mine Kerr-McGee Corp. Haske l l County, Okla.

Donegan No. 10 mine I s l a n d Creek Coal Co. Nicholas County, W . Va.

Bi rch No. 1 mine Birch Coal Co. Nicholas County, W . Va.

Average methane emiss ion Der dav. Mine. owner. and l o c a t i o n of mine

Sunnyside No. 3 mine Ka i s e r S t e e l Corp. Carbon County, Utah

Warwick, P o r t a l No. 3 mine Duquesne Ligh t Co., Coal Dept. Greene County, Pa.

Shoemaker mine Conso l ida t ion Coal Co. Marshal l County, W . Va.

No. 51 mine Bethlehem Mines Corp. Washington County, Pa.

S c o t i a mine S c o t i a Coal Co. Le tcher County, Ky.

York Canyon No, 1 mine Ka i s e r S t e e l Corp. Colfax County, N . Mex.

Dixianna mine Coal Process ing Corp. West County, Va.

No. 4-H mine Amherst Coal Co. Logan County, W . Va.

Guyan No. 5 mine I s l a n d Creek Coal Co. Logan County, W . Va.

Keys tone No. 4-A mine Eas t e rn Assoc ia ted Coal Corp. Ra le igh County, W . Va.

No. 41 mine Bethlehem Mines Corp. Marion County, W. Va.

Va i l mine I s l a n d Creek Coal Co. Har r i son County, Ohio

m i l l i o n cub ic f e e t


Maxine mine Alabama By-Products Corp. J e f f e r s o n County, Ala .

No. 77 mine Bethlehem Mines Corp. Carnbria County, Pa.

Guyan No. 1 mine I s l a n d Creek Coal Co. Logan County, W . Va.


Hutchinson mine P i t t s b u r g h Coal Co. Wes tmoreland County, Pa.

Nos. 3 and 4 mines Cannel ton Coal Co. McDowell County, W . Va.

H i l l s b o r o mine Truax-Traer Coal Co. Montgomery County, Ill.

Hamilton No. 1 mine I s l a n d Creek Coal Co. Union County, Ky.

Lancash i re No. 25 mine Barnes & Tucker Co. Cambria County, Pa.

Kings mine Kings S t a t i o n Coal Corp. Gibson County, Ind.

S o l d i e r Canyon mine Premium Coal Co. Carbon County, Utah

No. 19 mine, Wanamie C o l l i e r y Blue Coal Corp. Luzerne County, Pa.

Average me thane emiss ion per day, m i l l i o n cub ic f e e t


Pyro mine No. 2 Pyro Mining Co.. Union County, Ky.

No. 8 mine Cannel ton Coal Co. Kanawha County, W . Va.

Harmar mine Harmar Coal Co. Al legheny County, Pa.

No. 9 mine I s l a n d Creek Coal Co. Hopkins County, Ky.

Ken mine No. 4 Peabody Coal Co. Ohio County, Ky.

No. 2 mine Carbon Fue l Co. Carbon County, Utah

Putnam mine Union Carb ide Corp. Mason County, W . Va.

No. 16 mine Sahara Coal Co., I n c . S a l i n e County, I l l .

Beech Bottom mine Windsor Power House Coal Co. Brooke County, W. Va.


I tmann No. 1 mine Itmann Coal Co. Wyoming County, W . Va.

Camp No. 2 mine Peabody Coal Co. Union County, Ky.

Average methane emiss ion pe r day , m i l l i o n c u b i c f e e t


E a g l e No. 1 mine Peabody Coal Co. G a l l a t i n County, I l l .

Oakmont mine Harmar Coal Co. Al l egheny County, Pa.

R i v e r Queen Underground No. 1 mine Peabody Coal Co. Muhlenberg County, Ky.

I s a b e l l a mine N a t i o n a l Mines Corp. F a y e t t e County, Pa.

Moss No. 3 , P o r t a l D mine C l i n c h f i e l d Coal Co. Dickenson County, Va.

No. 7 mine Pocahontas F u e l Co. McDowell County, W . Va.

Winding Gulf No. 4 mine Wes tmore land Coal Co. R a l e i g h County, W . Va.

Bear mine Bear Coal Co. Gunnison County , Colo .

Oak Park No. 7 mine Hanna Coal Co. H a r r i s o n County, Ohio

H u r r i c a n e Creek mine C l i n c h f i e l d Coal Co. R u s s e l l County, Va.

Chaney Creek No. 2 mine C l i n c h f i e l d Coal Co. R u s s e l l County , Va.

S t a r Underground mine Peabody Coal Co. Muhlenberg County, Ky.

Average methane e m i s s i o n p e r day , m i l l i o n c u b i c f e e t


Hamil t o n No. 2 mine I s l a n d Creek Coal Co. Union County, Ky.

S k e l t o n mine Wes tmoreland Coal Co . R a l e i g h County, W . Va.

Providence No. 1 mine I s l a n d Creek Coal Co. Hopkins County, Ky.

Gorgas mine No. 7, America Opening Alabama Power Co. Walker County, Ala .

Ves ta No. 4 mine Jones & Laughl in S t e e l Corp. Washington County, Pa.

David mine Can te rbury Coal Co. Arms t r o n g County, Pa.

Newhall No. 6 mine C o n s o l i d a t i o n Coal Co. McDowell County, W . Va.

Nos. 33 and 37 mines Bishop Coal Co. McDowell County, W . Va.

Conemaugh No. 1 mine North American Coal Corp. I n d i a n a County, Pa .

P r e s c o t t No. 2 mine Westmoreland Coal Co. Wise County, Va.

Otsego mine Wes tmoreland Coal Co. Wyoming County, W . Va.

Saginaw No. 1 mine Oglebay Norton Co. Belmont County, Ohio

Average methane emiss ion per day , m i l l i o n c u b i c f e e t

Average methane emission per day, Mine, owner, and l o c a t i o n of mine m i l l i o n cubic f e e t

Kopperston No. 1 mine Eas t e rn Associated Coal Corp. Wyoming County, W . Va.

Gaston No. 2 mine S l ab Fork Coal Co. Wyoming County, W . Va.

Spar t an mine B e l l and Zo l l e r Coal Co. Randolph County, I l l .

Florence No. 2 mine Florence Mining Co. Indiana County, Pa.

Adrian mine Upshur Coals, Ltd. Upshur County, W. Va.

Val ley Camp No. 1 mine Val ley Camp Coal Co. Brooke County, W. Va.

No. 10 Wisconsin S t e e l Coal mines I n t e r n a t i o n a l Harvester Co. Harlan County, Ky.

No. 5 mine Sahara Coal Co., Inc. S a l i n e County, I l l .

APPENDIX 3.--METHANE EMISSION I N RELATION TO COUNTIES FROM MINES EMITTING AT LEAST 100. 000 C U B I C FEET OF GAS PER DAY

S t a t e and mine

Alabama: . ............................ Concord No 1

Mulga ....................................... ...................................... Bessie

F l a t Top .................................... ..................................... Chetopa

...................................... Maxine T o t a l .................................

. Segco No 2 .............................. .............................. . Segco No 1 ....................... . Gorgas No 7 ......

Tota l ................................. Colorado:

............................. Somerset . . . Bear ........................................

Tota l ................................. ........... Allen .........................

............................... . L . S Wood ................................. Dutch Creek

To ta l ................................. I l l i n o i s :

................................... NO . 10

.................................. Murdock

................................... NO . 2 1

...................................... . NO 24 . ...................................... NO 26

................................ . Orien t No 5 To ta l .................................

.............................. . Eagle No 2 Eagle No . 1 .................................

Tota l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Or ien t No . 3 ............................. In l and ...................................... Or ien t No . 6 ................................

Tota l ...... ...........................

County

.... J e f f e r s o n ........ do ........ do

do ........ . . . . . . . . do ........ do

-

....... Shelby

....... Walker ... ........ do

-

..... Gunnison do ........ -

... Las Animas

....... P i t k i n ........ do

-

.... C h r i s t i a n

...... Douglas

..... Frank l in ........ do ........ do ........ do -

..... G a l l a t i n do ........ -

J e f f e r s o n .... do ........ do ........ -

Average methane emis s ion per day.


6 . 1 1 .5 1.1 1 . 0

.4

. 2 1 0 . 3

.4

. 8

. I

. 9

. 7

.1 . 8

.4

3.5 3.2 6.7

. 5

.6

2.4 2.0 1 . 8

.4 6.6

. 3

.2

. 5

1 .9 1.1 1 . 0 4.0

S t a t e and mine

I l l i n o i s . . cont inued. .................................... . NO 1

Crown .................................... H i l l s b o r o .................................. ................................. Tota l

.................................. Spa r t an

................................... . NO 16 ... NO . 5 ................................. T o t a l ......................... .........

. ............................. O r i e n t No 4 ............................... . Z e i g l e r No 4 T o t a l .............. ...................

I nd i ana : .................................... Kings

Thunderbird .............................. Kentucky :

No . 10 Wisconsin S t e e l Coal Mines ........ F i e s .....................................

. ..... Z e i g l e r No 9 . ...................... E a s t Diamond ............................. ...... NO . 9 ..............................

. ............................ Providence No 1 To ta l ... ..............................

.. S c o t i a ................................. .................................... . NO 3

................................. Crescen t ................................. . Drake No 1 To ta l .................................

. ............... River Queen Underground No 1 ............................ S t a r Underground

T o t a l ................................. . ................................ Ken No 4

County

..... Macoupin

Montgomery ... do ........ .

..... Randolph

....... S a l i n e ... ........ do

. ... Williamson ........ do

.

....... Gibson

S u l l i v a n .....

....... Har lan

...... Hopkins ... ........ do ... ........ do ... ........ do

........ do .

...... Letcher

....... Mart in

... Muhlenberg ........ do -

........ do

........ do -

. . . . . . . . . . Ohio

Average me thane emis s i o n pe r day.


0.4

1.0 .2

1.2

.1

.2

.1

.3

. 6

.5 1.1

.2

.7

.1

.6

.5

.4

.2

.1 1 .8

.3

.3

.3

. 4

.7

.2

.1

.3

. 2

Average me thane

emiss ion pe r day. m i l l i o n c u b i c f e e t

0.4 . 2 . 2 . 2 .1

1.1

.3

. 7

. 2

. 2

.1 1.2

1 . 7 1 . 3

.6

. 2

.1 3.9

.4

. 3

1 . 6

. 8

. 7

. 2

. 2 1 . 9

.5

.1

. 6

S t a t e and mine

Kentucky ..Continued. D 0 t i k i ...................................

........................... Hamilton No . 1 .................................. Pyro No . 2 Camp No . 2 ............................... .............................. Hamilton No . 2

T o t a l ................................. ................... New Mexico: York Canyon

Ohio : Powhatan No . 1 ........................... Powhatan No . 3 .............................. Powhatan No . 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Saginaw No . 1 ...............................

T o t a l ................................. Nelms No . 1 .............................. Nelms No . 2 .................................

........................... Rose V a l l e y No . 6 V a i l ........................................ Oak Park No . 7 ..............................

T o t a l ................................. J e n s i e ...................................

Oklahoma : Choctaw Coal F a c i l i t y .................... Howe No . 1 ...............................

Pennsy lvan ia : Newfield ................................. ...................................... Renton Harmar ..................................... Oakmont .....................................

T o t a l ................................. J a n e Nos . 1 and 2 .......................

....................................... David T o t a l .................................

County

........ Union . . . d o . . . . . . . .

........ do . . . do . . . . . . . .

........ do -

....... Col fax

Belmont ...... do ........

... . . . . . do

........ do -

H a r r i s o n ..... do ........

........ do do ........ do ........ .

J e f f e r s o n ....

H a s k e l l ...... Le F l o r e .....

Allegheny .... do ........ do ........ do ........ -

Armstrong .... ........ do

-

S t a t e and mine

Pennsylvania ..continued. . . NO 3 2 ................................

................... Cambria S lope No . 3 3 . ...................... L a n c a s h i r e No 2 0 . ............................. B i r d No 3

NO . 77 ................................. ...................... Lancash i re No . 25 T o t a l ...............................

I s a b e l l a ........................ ....... Robena ................................. Shannopin .............................. Gateway .................................

.............................. Nemacolin . .......................... Warwick No 2

. Warwick P o r t a l No 3 ......:............ T o t a l ...............................

Lucerne No . 6 .......................... Homer C i t y ............................. L a n c a s h i r e No . 2 4 ...................... Marion .................................

........................ . Conemaugh No 1 T o t a l ...............................

............................ Forge S lope No . 19 Wanamie C o l l i e r y ................

T o t a l ............................... B i r d No . 2 ............................. Marianna No . 58 ........................

............................ Vesta No . 5 Mathies ................................ ........................ . Somerset No 6 0 Clyde .................................. ............................ Maple Creek .......................... Montour No . 4

............................... Westland NO . 51 .................................

. ............................ Ves ta No 4 T o t a l ...............................

Banning No . 4 .......................... ............................. Hutchinson . ......................... Florence No 2

T o t a l ...............................

County

Cambria ...... ... do ........ ... ........ do ... do ........ ... do ........ ... do ........

.

F a y e t t e ....... Greene ....... ... do ........ ... do ........ ... do ........ ... do ........ ... do ........

.

I n d i a n a ...... ... do ........ ... do ........ ... do ........ .. .do ........

.

...... Luzerne ... do ........

.

Somerset ..... Washington ... ... do ........ ... do ........ ... do ........ ... do ........ ... do ........ ... do ........ ... ........ do .. .do ........ ... do ........

.

Wes tmoreland . ... do ........ ... do ........

.

Average me thane emiss ion p e r day.


6 . 0 1 . 9

. 8 - 5 .2 . 2

9.6

.1

4 . 3 2 .9 2.6 1.0

. 3

. 3 11.4

2 . 0 1 . 6

.7

. 5

.1 4 . 9

1 . 5 . 2

1 . 7

. 7

2.3 1 . 9 1 .8 1 .5 1 . 2 1.1 1.1

.6

.3

.1 11.9

. 5

.2

. I

. 8

S t a t e and mine

Utah: ........... . Sunnyside No 1 ............... .................................. Kenilworth ............................. . Sunnyside No 3 .............................. S o l d i e r Canyon

NO . 2 ....................................... Tota l .............................. ...

Virg in i a : B e a t r i c e ................................. ................... . Virg in i a Pocahontas No 1

. ................... Virg in i a Pocahontas No 3

. ................... Virg in i a Pocahontas No 2 ................................ Lambert Fork

To ta l ................................. Moss No . 3. P o r t a l A ..................... ...................... MOSS NO . 3. P o r t a l C . . Moss No . 3. P o r t a l D ........................

Tota l ........ ......................... . MOSS NO 2 ............................... ............................. Hurricane Creek

Chaney Creek No . 2 .......................... Tota l .................................

........................... . P r e s c o t t No 1 B u l l i t t mine No . 1 .......................... .................................... Dixianna

. ..*........................... P r e s c o t t No 2 To ta l .................**..............

West V i rg in i a : ............................ . Badger No 14

. ........................*... Hampton No 3 Hampton No . 4 ...............................

Tota l ..............*...**......*.**.** Beech Bottom ............................. S i l t i x ...................................

County

....... Carbon ........ do ........ do ........ do ........ do

-

..... Buchanan ........ do ........ do ........ do ........ do -

Dickenson .... ........ do do ........ -

...... Russe l l ........ do ........ do

-

......... Wise ........ do ........ do ......... do -

...... Barbour

........ Boone do ......... -

Brooke ....... Faye t t e ......

..

Average methane emis s ion per day.


1 .2 .9 . 3 .2

. , .2 2.8

8.4 6 . 3 3.1 3.1

. 7 21.6

1.4 .6 .1

2.1

1.8 . I

,. .1 2.0

. 3

. 3

. 3

.1 1 . 0

. 3

1.6 .4

2.0

.2

.5

Average methane emis s i on per day.


1.1 1 . 0

.8

. 5 3.4

.5

. 4

.2 1.1

1.2 .3 . 2 . 2 . 2

2.1

12.2 8 .0 5 . 1 2.0 1 . 4 1 . 2

. 3

. 2 30.4

1 . 8 . 8 . 5 .3

3.4

.2

2.5 2.2 2.1 2.1 1.8 1 . 0

. 9

. 2 -1 .1 .1

13.1

S t a t e and mine

West Virginia.. Continued. Robinson Run No . 95 ...................... Williams ... .............................. Compass No . 2 ............................ Mars No . 2 ...............................

Tota l ................................. Lady Dunn No . 105 ........................ NO 34 ................................... . NO 8 .................................... .

T o t a l ................................. No . 1 Cedar Grove .......... .............. Dehue ......... ........................... Guyan No . 5 ................................. NO . 4-H ..................................... Guyan No . 1 .................................

T o t a l .................................. Loveridge ................................ Consol No . 9 ................................ Federa l No . 1 ............................... Joanne . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Consol No . 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NO 93 ...................................... . NO 44 ...................................... . NO . 41 . ..................................

T o t a l .................................

I r e l a n d .................................. McElroy ..................................... Alexander ................................... Shoemaker ...................................

T o t a l ................................. Putnam ................................... NO . 14 ................................... Olga ..................................... ....................................... NO . 2 Shannon Branch .............................. Keystone No . 1 ........................... Bishop ...................................... Mait land .................................... NOS . 3 and 4 ................................ NO . 7 .................................... Newhall No . 6 ............................... NO . 33.37 . ...............................

Tota l ................................

County

Har r i son ..... ... do ........ . . . d o . . . . . . . . . . . do . . . . . . . .

.

Kanawha ...... ... do ........ ... do ........

.

Logan ........ ... do ........

do ........ do ......... do ........ .

Marion . . . . . . . do ........ do ........ do ........ do ........ do ........ do ........

. . . do ........ .

Marshal l ..... do ........ do ........ do ........ .

Mason ........ McDowell ..... ... do ........

do ........ do ........

........ ... do do. ....... do ........ do ........

... do ........ I do ........

... do ........ .

S t a t e and mine

West V i r g i n i a ..Continued. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No . 25

Humphrey ................................. ............................... . Federa l No 2

................................. . Osage No 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . B l a c k s v i l l e No 1

Arkwright ................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . B l a c k s v i l l e No 2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pursg love T o t a l .................................

Sewel l No . 4 ............................. . ..................*....*.*...... Sewel l No 1

. . Birch No 1 ............................. ......................... . Donegan mi119 No 10 T o t a l .................................

. V a l l e y Camp No 3 ........................

. . . . . . . . . . . . . . . . . . . . . . . . . . . . Val ley Camp No 1 T o t a l ................................ .

E a s t Gulf ................................ NO . 10 ................................... S l a b Fork No . 8 ............................. E c c l e s No . 5 ................................ Keystone No . 4 .............................. Macalpin No . 3 .............................. . ............................ Keystone No 4-A

. .......................... Winding Gulf No 4 S k e l t o n .....................................

T o t a l ................................. Adr ian ...................................

............................. Itmann No . 3 Itmann No . 4 ................................ Keple r ................................... Keystone No . 2 ..............................

................................ Itmann No . 1 Otsego ......................................

. ....................... Kopperston mine No 1 ................................ Gaston No-2

T o t a l .................................

County

. . . . . . . . . Mingo

Monongalia ... ........ do ........ do ........ do

do ........ ........ do ........ do

-

..... Nicholas ........ do

. . . ........ do ........ do

-

......... Ohio ........ do .

Rale igh ...... ... do ........

do ........ do ........ do ........ do ........

........ do

........ do do ........ .

Upshur ....... ...... Wyoming

do ........ ... do ........ ........ do

........ do

........ do ........ do

........ do .

Average me thane emis s i o n per day.


0 . 3

1 0 . 7 8 . 1 7 .0 6 . 0 3 . 4 2.5 1 . 3

39.0

. 5

. 4

. 3

. 3 1 . 5

1 . 3 .1

1 . 4

1 . 0 . 7 . 5 .5 . 3 . 3 . 2 .1 .1

3.7

.1

1 . 0 .6 .5 . 4 .2 .1 .1 . I

3.0

APPENDIX 4. --METHANE EMISSION FROM MINES I N COALBEDS EMITTING I N EXCESS OF 1 MILLION CUBIC FEET FROM EACH BED

Average methane emiss ion per day,

m i l l i o n c u b i c f e e t 12.2

10.7

8 . 1

8.0

7 .0

6 . 0

5 .1

4 . 3

3.4

2.9

2.6

2.5

2 .3

2.0

1.9

Coalbed

P i t t s b u r g h ............ Name and l o c a t i o n o f mine

Lover idge mine Marion County, W . Va.

Humphrey No. 7 mine Monongalia County, W . Va.

F e d e r a l No. 2 mine Monongalia County, W . Va.

Consol No. 9 mine Marion County, W . Va.

Osage No. 3 mine Monongalia County, W. Va.

B l a c k s v i l l e No. 1 mine Monongalia County, W . Va.

F e d e r a l No. 1 mine Marion County, W. Va.

Robena mine Greene County, Pa.

Arkwright mine Monongalia County, W. Va.

Shannopin mine Greene County, Pa.

Gateway mine Greene County, Pa.

B l a c k s v i l l e No. 2 mine Monongalia County, W. Va.

Marianna No. 58 mine Washington County, W. Va.

Joanne mine Marion County, W . Va.

Ves t a No. 5 mine Washington County, Pa.

I r e l a n d mine Marshall County, W . Va.

Coalbed

Pi t tsburgh--Cont inued

Somerset mine Washington County, Pa.

Consol No. 20 mine Marion County, W . Va.

Name and l o c a t i o n of mine

Mathies mine Washington County, Pa.

Pursglove mine Monongalia County, W . Va.

Average methane emission per day,

m i l l i o n cubic f e e t 1 .8

Val ley Camp No. 3 mine Ohio County, W . Va.

No. 93 mine Marion County, W . Va.

Clyde mine Washington County, Pa,

Maple Creek mine Washington County, Pa.

Montour No. 4 mine Washington County, Pa.

Robinson Run No. 95 mine Har r i son County, W . Va.

Nemacolin mine Greene County, Pa.

Williams mine Har r i son County, W . Va.

Compass No, 2 mine Har r i son County, W . Va.

McElroy mine Marshall County, W . Va.

Powhatan No. 1 mine Belmont County, Ohio

Coalbed

P i t t sburgh- -Cont inued

Name and l o c a t i o n o f mine

Wes t l a n d mine Washington County, Pa.

Mars No. 2 mine H a r r i s o n County, W . Va.

Banning No. 4 mine Wes tmoreland County, Pa.

Alexander mine Marsha l l County, W . Va.

Warwick No. 2 mine Greene County, Pa.

No. 44 mine Marion County, Pa.

No. 5 1 mine Washington County, Pa.

Shoemaker mine Marsha l l County, W . Va.

No. 41 mine Marion County, W. Va.

Beech Bottom mine Brooke County, W. Va.

Hutchinson mine Wes tmoreland County, Pa.

Powhatan No. 3 mine Belmont County, W . Va.

Powhatan No. 5 mine Belmont County, W . Va.

PLI tnam rnine Flason County, W. Va.

Vesta No. 4 mine Washington County, Pa.

I s a b e l l a mine F a y e t t e County, Pa.

Average methane emiss ion p e r day ,


Average methane e m i s s i o n pe r day ,

m i l l i o n c u b i c f e e t 8 .4

6 . 3

3 . 1

3 .1

2.5

2 .1

1 . 8

1 . 0

1 . 0

1 . 0

.9

. 7

. 5

.4

. 3

. 3

Coalbed

Pocahontas No. 3 . . . . . .


B e a t r i c e mine Buchanan County, Va.

V i r g i n i a Pocahontas No. 1 mine Buchanan County , Va.

V i r g i n i a Pocahontas No. 3 mine Buchanan County , Va.

V i r g i n i a Pocahontas No. 2 mine Buchanan County, Va.

No. 14 mine McDowell County, W . Va.

Sllannon Branch mine McDowell County, W . Va.

Keystone No. 1 mine McDowell County, W. Va.

Bishop mine McDowell County, W . Va.

E a s t Gulf mine R a l e i g h County, W . Va.

I tmann No. 3 mine Wyoming County, W . Va.

Mai t l a n d mine McDowell County, W . Va.

No. 1 0 mine R a l e i g h County, W . Va.

Kep le r mine Wyoming County, W . Va.

Keys t o n e No. 2 mine Wyoming County , W. Va.

Keys t o n e No. 4 mine R a l e i g h County , W . Va.

Macalpin No. 3 mine R a l e i g h County, W . Va.

Itmann No. 1 mine Wyoming County, W . Va.

Coalbed

Pocahontas No.3--(Con.)


Newhall No. 6 mine McDowell County, W . Va.


Nos. 3 and 4 mines McDowell County, W . Va.

Otsego mine WyomingCounty, W . Va.

Average me thane emis s i o n per day,

m i l l i o n cub ic f e e t 0 . 2

No. 24 mine F r a n k l i n County, I l l .

I l l i n o i s N o s . 5 a n d 6 . .

O r i e n t No. 3 mine J e f f e r s o n County, I l l .



I n l a n d mine F r a n k l i n County, I l l .

Crown mine Montgomery County, I l l .

O r i e n t No. 6 mine J e f f e r s o n County, I l l .

Murdock mine Douglas County, I l l .

O r i e n t No. 4 mine Will iamson County, 111.

I No. 10 mine C h r i s t i a n County, I l l .

Average methane emi s s i o n per day,

m i l l i o n cub ic f e e t 0 . 5

.4

. 4

. 3

.2

. 2

.2

.1

.1

15.3

6 .0

1 .9

. 8

. 7

. 7

. 5

Coalbed

I l l i n o i s Nos. 5 and 6--Continued.

Upper K i t t a n n i n g and Lower K i t t a n n i n g .


Z e i g l e r No. 4 mine Will iamson County, I l l .

O r i e n t No. 5 mine F r a n k l i n County, I l l .

No. 1 mine Macoupin County, I l l .

Eagle No. 2 mine G a l l a t i n County, I l l .

H i l l s b o r o mine Montgomery County, I l l .

Eagle No. 1 mine G a l l a t i n County, I l l .

No. 16 mine S a l i n e County, I l l .

S p a r t a n mine Randolph County, I l l .

No. 5 mine S a l i n e County, I l l .

No. 3 2 mine Cambria County, Pa.

Cambria Slope No. 33 mine Cambria County, Pa.

Lancash i re No. 20 mine Cambria County, Pa.

Lancash i re No. 24 mine I n d i a n a County, Pa.

B i r d No. 2 mine Somerset County, Pa.

B i rd No. 3 mine Cambria County, Pa.

Coalbed

Upper K i t t a n n i n g and Lower K i t t a n n i n g - - Continued.

Pocahontas No. 4 . . . . . .

P r a t t . . . . .............


Badger No. 1 4 mine Barbour County, W . Va.

B i rch No. 1 mine Nicholas County, W . Va.

No. 77 mine Cambria County, Pa.

Conemaugh No. 1 mine I n d i a n a County, Pa.

Olga mine McDowell County, W . Va.


Shannon Branch mine McDowell County, W . Va.

Mai t l and mine McDowell County, W . Va.

Ltmann No. 4 mine Wyoming County, W . Va.

S l a b Fork No. 8 mine Ra le igh County, W . Va.

Nos. 3 and 4 mines McDowell County, W . Va.

Keys tone 4-A mine Ra le igh County, W . Va.

d i n d i n g Gulf No. 4 mine Rale igh County, W. Va.

Concord No. 1 mine J e f f e r s o n County, Ala .

Yulga mine J e f f e r s o n County, Ala.

Average me thane emiss ion per day,

m i l l i o n c u b i c f e e t 0 .3

Average methane emiss ion pe r day ,


3.2

. 7

7.4

1 . 8

1 .4

. 7

.6

.1

4.6

2.0

1 . 6

. 8

. 7

. 5

. 2

. 2

Coalbed

Basin "B" .............

T i l l e r ................

F r e e p o r t .............


L. S. Wood mine P i t k i n County, Colo.

Dutch Creek mine P i t k i n County, Colo.

Somerset mine Gunnison County, Colo.

Moss No. 2 mine R u s s e l l County, Va.

Moss No. 3 , P o r t a l A mine Dickenson County, Va.

Lambert Fork mine Buchanan County, Va.

Moss No. 3 , P o r t a l C mine Dickenson County, Va.

Moss No. 3 , P o r t a l D mine Dickenson County, Va.

Lucerne No. 6 mine I n d i a n a County, Pa.

Homer C i t y mine I n d i a n a County, Pa.

Newfield mine Al legheny County, Pa.

Renton mine Al legheny County, Pa.

Marion mine I n d i a n a County, Pa.

Harmar mine Al legheny County, Pa.

Oakmont mine Al legheny County, Pa.

Coalbed Name and l o c a t i o n of mine

Cedar Grove.. . . . . . . . . .

Kentucky Nos. 9 and 11.

Adrian mine Upshur County, W . Va.

David mine Arms t rong County, Pa.

Florence No. 2 mine Indiana County, Pa.

Hampton No. 3 mine Boone County, W . Va.

No. 1 Cedar Grove mine Logan County, W . Va.

Hampton No. 4 mine Wes tmoreland County, W. Va.

No. 25 mine Mingo County, W . Va.

Guyan No. 5 mine Logan County, W. Va.

Guyan No. 1 mine Logan County, W . Va.

F ies mine Hopkins County, Ky.

Ze ig l e r No. 9 mine Hopkins County, Ky.

Dot ik i mine Union County, Ky.

Eas t Diamond mine Hopkins County, Ky.

Drake No. 1 mine Muhlenberg County, Ky.

Crescent mine Muhlenberg County, Ky.

Average methane emission per day,

m i l l i o n cubic f e e t 0 . 1

Average methane emiss ion per day ,


. 2

. 2

. 2

. 2

. 2

.I

.1

.1

4 . 1

1 .7

1 . 3

.4

.1

3.5

1.1

1 .0

Coalbed

Kentucky Nos. 9 and 11--Continued.

Nos. 6 and 6A .........

Mary Lee ..............


Hamilton No. 1 mine Union County, Ky.

Ken mine No. 4 Ohio County, Ky.

Pyro No. 2 mine Union County, Ky.

No. 9 mine Hopkins County, Ky.

Camp No. 2 mine Union County, Ky.

R i v e r Queen UndergroundNo. 1 mine Muhlenberg County, Ky.

Providence No. 1 mine Hopkins County, Ky.

Hamilton No. 2 mine Union County, Ky.

S t a r Underground mine Muhlenberg County, Ky.

Nelms No. 1 mine H a r r i s o n County, Ohio

Nelms No. 2 mine H a r r i s o n County, Ohio

J e n s i e mine J e f f e r s o n County, Ohio

Oak Park No. 7 mine H a r r i s o n County, Ohio

B e s s i e mine J e f f e r s o n County, Ala.

F l a t Top mine J e f f e r s o n County, Ala .

H a r t s h o r n e and Lower H a r t s h o r n e .

Average methane e m i s s i o n p e r day ,

m i l l i o n c u b i c f e e t 0 . 8

. 4

3.3

. 7

.6

. 5

. 2

2.0

1.6

. 3

1 . 9

. 5

. 3

1 .7

Coalbed

Mary Lee--Cont inued. . .

F r e e p o r t Nos. 2 and 6 , and Lower F r e e p o r t .

Sewel l . . . . . . . . . . . . . . . .


Segco No. 1 mine Walker County, Ala .

Chetopa mine J e f f e r s o n County, A la .

L a n c a s h i r e No. 24 mine I n d i a n a County, Pa.

Rose V a l l e y No. 6 mine H a r r i s o n County, Ohio

J a n e No. l a n d N o . 2 mines Arms t r o n g County, Pa.

L a n c a s h i r e No. 25 mine Cambria County , Pa.

Howe No. 1 mine Le F l o r e County, Okla.

Choctaw Coal F a c i l i t y mine H a s k e l l County , Okla.

S e w e l l No. 4 mine Nicho las County, W . Va.

S i l t i x mine F a y e t t e County, W . Va.

S e w e l l No. 1 mine N i c h o l a s County , W . Va.

Donegan No. 1 0 mine Nicho las County, W . Va.

:

I I Average methane

Red Ash.

Coalbed

Twin, Bottom Ross , Top and Bottom

No. 19 Wanamie C o l l i e r y Luzerne County, Pa.


Forge S l o p e mine Luzerne County, Pa.

e m i s s i o n p e r day , m i l l i o n c u b i c f e e t

1 .5

Upper Sunnys i d e and Lower Sunnys ide .

I n d i a n a Nos. 5 and 6 . .

No. 2 Gas (known a l s o a s Imboden).

Thunderb i rd mine S u l l i v a n County, I n d .

Kings mine Gibson County, I n d .

Sunnysi.de No. 1 mine Carbon County, Utah

Sunnyside No. 3 mine Carbon County, Utah

Lady Dunn No. 105 mine Kanawha County, W. Va.

S c o t i a mine L e t c h e r County, Ky.

I No. 10 Wisconsin S t e e l Coal mines ( .1

I H a r l a n County, Ky. . 9

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