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THE HANNA MINING COMPANY

MAGNETIC SURVEY

MACMILLAN CLAIM GROUP

CIAIMS KRL 7 2 2 1 3 THROUGH 7 2 2 5 9 ,

221198, 221199, 239122, 239123

RED LAKE MINING DIVISION, ONTARIO

OCTOBER 23rd, 1970

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a- '37 Ownership

The Fifty-one claims reported upon are KRL 72213 through 72259, 221198, 221199, 239122, and 239123. They are owned by Mr. John I). Mac-Mil Ian and Mr. Lloyd M. MacMillan, 213 Windermere Avenue, Thunder Bay, Ontario. They are hold under option to The Hanna Mining Company, 100 Lrieview Plaza, Cleveland, Ohio 44114.

Location and Access

The claim group is approximately 100 miles north ol' Sioux Lookout, and 60 miles west of Pickle Lake, They fall within the Stoughton Lake Claim Map.

Access is by float plane from Sioux Lookout or Pickle Ixtke.

Procedure and Personnel

The magnetometer survey was part of a larger survey which also covered the adjoining properties. Those parts under Lang Lake or Lull Lake were done between February 13th, J 970 and April 1st, 1970. A transit-controlled baseline was established east-west on the ice of Lang Lake, and picket lines were placed normal to it every 400 i'eet •

Line cutting was done by John MacMillan and Lloyd MacMillan of Thunder Bay, Cordon Bottle of Sioux Lookout, and Joe Crowe of Fort Severn. Readings were taken by George Bosshart and Leonard Fritz, c/o The Hanna Mining Company, H05 - 69 Yonge Street, Toronto 215, Ontario.

The land portion was surveyed between May 31st, 1970 and September j 51 h, 1970. 'Three Iran s i t-controiled ba se .tries were established parallel to {lie winter baseline, at 5,600 feet north, 2,600 i'eet north, and 3,000 feet south of it. Picket lines were cut normal to the baselines every 400 feet.

Line cutting was done by Joe Crowe and Cn;ss Crowe of Fort Severn; Dixon Ldwards, 42 Lloyd Street, St. Catharines: Paul Hibbins, 2 Minden Crescent, Toronto: and Leslie Ori, 174 Glen Cedar Road, Toronto. A part of the line cutting was contracted to Brannan and Shields, of Red Ixike. Their line cutters were: Robert Kesick, John Keesick, and Sandy Koesie, all c/o General Delivery, Red Lake; Robert Keesick and Murray Keesick, Box 49, Rod Lake; and Abe Qui dent, c/o Green Airways, Red Lake. Readings were taken by Lawrence Richardson, 15 Merr.it Parkway, Box 127, Port Colborne.

The MacMillan group contained 7.5 miles of baseline and 45.7 miles of picket line. 4,395 stations were read.

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Instrument

Tor the winter work, the instrument used was a Sharpe, model MF 1 , a fluxgate type?} with a sensitivity of 10 gammas. Tor the summer a Sharpe model Mf 2 was used, also a fluxgate type, with a sensitivity of 10 gammas.

General Geology

The Ontario Department of Mines geologic map* shows the claim group underlain by intermediate and mafic volcanic rocks of Archean age, with many small intercalated iron formations. This sequence is intruded by granitic rocks on the southwest corner and on the west end of the property- A synclinal axis which trends N60°C and plunges fast is indicated across the northeast part of the property.

Interpretation

A very prominent and very straight anomaly, often thousands of gammas and not uncommonly tens of thousands of gammas, lies near the south boundary of the property for its entire length. It is probably caused by iron formation. To the west, where it is most uniform, it probably dips very steeply, and is about '20 feet thick. To the east, the anomaly is too broad to be caused by thickening of 1 lie formation. It must represent a change to a very shallow dip. Tile triangular magnetic low where claims KRL 72220, 7222.1 , 72224, and 72225 meet is a structural dome whore 1 lie iron formation is missing.

Across claims KRL 72253, 239122, 239!23, and 7225s, another anomaly of similar magnitude strikes about N45°E. An outcrop within it is steeply dipping iron formation, banded chert and magnetite. The steep dip appears to be raaintained, and tile formation must be nearly 200 feet thick. If this is the stratigraphic equivalent of the iron formation to the south, then the synclinal axis must bend to oast-west across claims KRL 72252, 72253, and 72254 .

The large magnetic gradients surrounding these major anomalies obscure most weaker trends. The only oilier clear indication is a wry uniform magnetic 'low in claims KKL 72217 and 72218. This is probably a granitic boss intruding the volcanic sequence.

Leonard fritz,"' Geologist

fenwick, K. C , Preliminary Geological Map No. P 581, Lang-Cannon Lakes Area (West Half), Ontario Department of Mines, 1969

805 - 69 Yonge Street, Toronto 215, Ontario, October 23rd, 1970

C E R T £ I C A T E

] , Leonard Fritz, received a Baclielor of Science degree

in geology from Michigan Technological University on

August 29th, 1969. 1 am employed as a geologist by The

Hanna Mining Company.

Leonard Fritz Geologist