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La Negra - History

The La Negra mine was discovered and developed by Industriales Peñoles S.A. de C.V. The mine commenced production in 1970 and produced until the mine was put on care and maintenance in 2000.

Historical production as reported by Peñoles was approximately 6.6 million tonnes of ore with metal production as follows:

36 million oz	Silver
323 million lbs	Zinc
70 million lbs	Copper
161 million lbs	Lead

Historical Reserves

In addition to the 6.6 million tonnes of ore mined by Peñoles the historical reserves* are 1.22 million tones grading:

161 grams / tonne	Silver
(5.2 ounces per tonne)
2.80%	Zinc
0.94%	Copper
0.88%	Lead
(*Note: This data is not NI 43-101 compliant)

1,000 tpd mill:

• 3 stage crushing plant
• 8' x 10' ball mill
• upgrades being done to increase capacity from 800 tpd to 1,000 tpd
• mill produces zinc, copper and lead concentrates

23 known ore bodies:

• all accessible by existing workings
• large orebodies
• amendable to low cost long hole, open stope mining methods
• all reserves are above the 2,000 level main haulage way - ore

Exploration potential is very good:

• many zones open at depth

Infrastructure is in place:

• power provided by existing powerlines
• company owned housing
• water available

All permits and agreements in place:

• very good local support for the project

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This page was created on Wed Sep 8, 2010 at 6:09:27 PM Pacific Time.