RED HILLS

MOLYBDENUM-COPPERPRESIDIO COUNTY TEXAS

mining corporationTSQ.V FSE: TQ4 TSMNF. US

Tosca

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This presentation may contain forward-looking statements, which involve knownand unknown risks, uncertainties and other factors that may cause actual eventsto differ materially from current expectations. Important factors including theavailability of funds, the results of financing efforts, the results of explorationactivities – that could cause actual results to differ materially from the Company'sexpectations are disclosed in the Company's documents filed from time to time onSEDAR (www.sedar.com). Readers are cautioned not to place undue reliance onthese forward-looking statements, which speak only as of the date of thispresentation. The company disclaims any intention or obligation, except to theextent required by law, to up date or revise any forward-looking statements,whether as a result of new information, future events or otherwise.

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HIGHLIGHTSManagement Team

Exploration, production and financing experience

Corporate Strategy

To acquire precious and base metal assets that can be developed into economically viable mining operations

Red Hills Moly/Copper Project

Historical (non 43-101 compliant) 120 million pounds Cu resource grading 0.35% Cu

Mo zone 1000 m by 200 m, open in 3 directions

Excellent infrastructure in a mining friendly jurisdiction

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CAPITAL STRUCTURE/TRANSACTION

Shares outstanding: 38.0 million

Fully diluted: 55.0 million

Share price (April 12): $0.52

Market Capitalization: $20 million

Advisors:

Legal counsel: Tupper, Jonsson & Yeadon

Auditor: Davidson & Company LLP

Transfer agent: Computershare

Transaction:

Tosca has an option to earn 100% interest in the Red Hills Moly/Copper project located 18 km west of Presidio, Texas.

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DIRECTORS AND OFFICERSDr. Sadek E. El‐Alfy, Ph.D, D.I.C., BSC (Eng.) Chairman, CEO and Director

Dr. El‐Alfy is a professional mining Engineer with 35 years experience in underground and open pit mining. He has held senior positions with Giant Yellow Knife Mines, The Iron Ore Company of Canada, Crystallex International, and most recently Creston Moly.

Mr. Ron Shenton, President , Director

Mr. Shenton has over 25 years experience in the financial sector working with a number of public companies providing fund raising, public relations and corporate governance.

Dr. Luca Riccio, Ph.D, P.Geo. , V.P. Exploration and Director

Dr. Riccio has experience in the evaluation and supervision of gold, base metal, nickel‐copper and PGMs projects in the Americas, Europe and Asia. He has held senior positions at Anaconda Copper, Crystallex International and most recently Creston Moly.

Brian Roberts, Director

Mr. Roberts has over 30 years experience in financial and business consulting.

Dr. David Stone, MBA, P.Eng, Director

Dr. Stone is a professional mining Engineer with over 30 years of providing engineering and financial consulting experience to underground and surface metals mines worldwide.

RED HILLS TRANSACTION DETAILS

Agreement to acquire 100% interest in the Red Hills Moly/Copper project on March 31, 2011, subject to a 2% NSR

US$ 10.9 million cash over five years

2.1 million Tosca shares over five years

First year commitment of $575,000 + 400,000 common shares

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RED HILLS HISTORY

Pre-feasibility studies by Rio Grande Mining Company (1997)

Worked by major companies (1955-72)

Asarco, Phelps Dodge, Amax, Duval

88 holes drilled

Main focus to define size and viability of shallow copper resource

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RED HILLS LOCATION

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Excellent Infrastructure• Road access• Power grid near by• Mining friendly

jurisdiction• Semi-desert climate

allows for year round exploration and development

Red Hills Moly/Copper Project

RED HILLS PROJECT CLAIMS

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SHAFTER-PRESIDIO MINERAL DISTRICT

Red Hills moly/copper project lies approximately 8 km from the Shafter Silver Mine (Aurcana Corporation)

Scale: 1.5 km

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Red Hills Panoramic View

PREVIOUS DRILLING - COPPER

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COPPER HIGHLIGHTS

COPPER BLANKET

17.1 million tons @ 0.35% Cu

Low strip ratio

1997 studies showed profitability at $1.10 Cu and $4.50 Mo

HIGH GRADE COPPER

3 HOLES

#36 110’ (33.5M) @ 9.09% Cu

#59 70’ (21.3m) @ 6.12% Cu

#55 70’ (21.3m) @ 7.77% Cu

Note these are historic estimates which have not been verified by a QP and should not be relied upon.

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SELECTED COPPER INTERCEPTS

HOLE # FROM TO INTERCEPT Cu% Mo% CuEquiv.Feet Meters Feet Meters Feet Meters

HD4 150 45.7 320 97.5 170 51.8 1.03 0.057 1.29DD6 50 15.2 330 100.6 280 85.3 0.29 0.080 0.65

DD7 70 21.3 170 51.8 100 30.5 0.68 0.060 0.95D 14 10 3.0 60 18.3 50 15.2 0.21 0.044 0.41

150 45.7 220 67.1 70 21.3 0.37 0.078 0.72

D 16 150 45.7 270 82.3 120 36.6 0.53 0.039 0.71DH 18 80 24.4 390 118.9 310 94.5 0.41 0.060 0.68

DH 19 100 30.5 240 73.2 140 42.7 0.37 0.064 0.66DH 24 10 3.0 70 21.3 60 18.3 0.77 0.052 1.00DH 30 60 18.3 120 36.6 60 18.3 0.60 minor 0.60

120 36.6 160 48.8 40 12.2 0.23 0.011 0.28DH 36 70 21.3 180 54.9 110 33.5 9.09 minor 9.09

RD 52 0 0.0 90 27.4 90 27.4 0.77 0.079 1.13RD 54 90 27.4 140 42.7 50 15.2 0.62 0.063 0.90RD 55 110 33.5 205 62.5 95 29.0 5.51 no assay 5.51

RD 59 140 42.7 210 64.0 70 21.3 7.74 no assay 7.74

Copper Equivalent (CuEquiv.) = Cu% + ( Mo% x 4.5)

PREVIOUS DRILLING - MOLY

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MOLY HIGHLIGHTS

28 of 88 holes in moly zone Average hole depth: 652 feet (199m) 5 of 28 holes exceed 1000 feet (305m) Deepest hole: DDH 7, 2016 feet (642m) @

0.076% Mo Average depth of remaining 23 holes: 431 feet

(131m) Weighted average moly grade of 71% of

intercepts is 0.07% Mo at 0.05% Mo cutoff Open to the South and at depth Present dimensions 1000m x 200m

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SELECTED MOLY INTERCEPTS

HOLE # LENGTH FROM TO INTERCEPT Mo %

Feet Meters Feet Meters Feet Meters Feet Meters

DD1 1008 307.2 30 9.1 250 76.2 220 67.1 0.041

610 185.9 1008 307.2 398 121.3 0.094

HD3 1744 531.6 0 0 1744 531.6 1744 531.6 0.053

includes 480 146.3 890 271.3 410 125.0 0.079

800 243.8 890 271.3 90 27.4 0.099

DD6 650 198.1 0 0 500 152.4 500 152.4 0.092

500 152.4 650 198.1 150 45.7 0.064

DD 14 1685 513.6 10 3.0 1510 460.2 1500 457.2 0.070

includes 700 213.4 1030 313.9 330 100.6 0.108

DD 17 700 213.4 20 6.1 700 213.4 680 207.3 0.095

includes 230 70.1 700 213.4 470 143.3 0.110

DH 21 489 149.0 110 33.5 240 73.2 130 39.6 0.034

240 73.2 489 149.0 249 75.9 0.062

includes 450 137.2 489 149.0 39 11.9 0.131

DH 26 359 109.4 0 0.0 359 109.4 359 109.4 0.067

includes 270 82.3 359 109.4 89 27.1 0.092

DD7 2106 641.9 0 0.0 2106 641.9 2106 641.9 0.076

RD 62 155 47.2 0 0.0 155 47.2 155 47.2 0.092

PLAN OF ACTION Prepare 43-101 compliant report based on historic drilling

Quantify geometry and extent of high grade copper zone (5 holes, 500m)

Carry out verification drilling within shallow copper-moly blanket (10 holes , 1,500 m) and select samples for metallurgical tests.

Verify and deepen previous drill holes in moly zone (4 holes, 1,400 m).

Investigate extensions to the moly zone (2 holes, 600 m)

Prepare Pre-Economic Assessment of shallow copper blanket and associated moly mineralization (M.D.A. Reno and M3 Engineering, Tucson)

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mining corporation

Tosca

#400, 409 Granville Street

Vancouver, BC V6C 1T2

Tel: 604-687-6562

Email: info@toscamining.com