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An aggressive exploration and development program conducted by U.S. Silver since taking over ownership and operation of the Galena mine in June 2006, has resulted in a 93 percent increase in proven and probable silver ounces as compared to the January 1, 2006 estimate. Silver ounces contained in silver-lead ore increased by 477 percent, with a 394 percent increase in contained tons of lead. The tons of silver-lead ore reserves increased by 757 percent since January 2006. During this same period, proven and probable silver ounces contained in silver-copper ore increased by 97 percent. Silver ounces contained in silver-copper ore comprise 81 percent of the total proven and probable reserve at the Galena mine.
January 1, 2009 U.S. Silver Ore Reserves and Resources:
| Copper-Silver Ore |
Tons |
Ag Grade
(oz/t) |
Contained
Ounces |
% Cu |
Contained
Cu Tons |
| Total Reserves (Proven & Probable) |
722,500 |
23.41 |
16,912,100 |
0.70 |
5,050 |
| Measured & Indicated Resources |
458,700 |
18.32 |
8,403,200 |
0.61 |
2,810 |
| Inferred Resource |
557,900 |
19.49 |
10,874,200 |
0.58 |
3,260 |
| Lead-Silver Ore |
Tons |
Ag Grade
(oz/t) |
Contained
Ounces |
% Pb |
Contained
Pb Tons |
| Total Reserves (Proven & Probable) |
426,300 |
9.53 |
4,064,600 |
10.16 |
43,320 |
| Measured & Indicated Resources |
75,000 |
10.69 |
801,500 |
10.87 |
8,150 |
| Inferred Resource |
689,100 |
8.94 |
6,158,600 |
9.45 |
65,140 |
43-101 Compliant, Effective March 1, 2009, Coeur Mine Inferred Resource Included
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