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Mine Type
Ownership
Tons
(000) |
Silver
(oz/ton) |
Gold
(oz/ton) |
Lead
(%) |
Zinc
(%) |
Silver
(000 oz) |
Gold
(000 oz) |
Lead
(Tons) |
Zinc
(Tons) | |
---|---|---|---|---|---|---|---|---|---|
Proven Reserves (2, 6) |
–
| – |
–
| – | – | – | – | – | – |
Probable Reserves (2, 6)
|
2,197
| 22.5 |
0.01
| 2.4 | 2.2 |
49,473
| 13 | 52,520 | 49,320 |
Proven & Probable Reserves (2, 6)
| 2,197 | 22.5 |
0.01
| 2.4 | 2.2 | 49,473 | 13 | 52,520 | 49,320 |
Measured Resources (12, 16) | – | – | – | – | – | – | – | – | – |
Indicated Resources (12, 16) |
4,601
|
8.0
|
0.007
|
1.0
|
4.0
|
32,288
|
29
|
39,540
|
163,130
|
Measure & Indicated Resources (12, 16) | 4,601 | 8.0 | 0.007 | 1.0 | 4.0 | 32,288 | 29 |
39,540
| 163,130 |
Inferred Resources (12, 16) | 2,441 | 10.4 | 0.003 | 0.9 | 2.1 | 25,478 | 8 | 22,380 | 51,000 |
(2) Mineral reserves are based on $17/oz silver, $1600/oz gold, $0.90/lb lead, $1.15/lb zinc, unless otherwise stated. All Mineral Reserves are reported in-situ with estimates of mining
dilution and mining loss.
(3) The reserve NSR cut-off values for Greens Creek are $210/ton for all zones except the Gallagher Zone at $215/ton; metallurgical recoveries (actual 2022): 81% for silver, 72% for
gold, 82% for lead, and 89% for zinc.
(4) The reserve NSR cut-off values for Lucky Friday are $241.34/ton for the 30 Vein and $268.67/ton for the Intermediate Veins; metallurgical recoveries (actual 2022): 95% for silver, 95% for lead, and 88% for zinc
(5) The average reserve cut-off grades at Casa Berardi are 0.12 oz/ton gold underground and 0.04 oz/ton gold for open pit. Metallurgical recovery (actual 2022): 87% for gold;
US$/CAN$ exchange rate: 1:1.3.
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(6) The reserve NSR cut-off value at Keno Hill is $244.24/ton (CAN$350/tonne), Metallurgical recovery: 93% for silver, 25% for gold, 93% for lead, 72% for zinc; US$/CAN$ exchange rate: 1:1.3.
(12) Mineral resources are based on $1700/oz gold, $21/oz silver, $1.15/lb lead, $1.35/lb zinc and $3.00/lb copper, unless otherwise stated.
(13) The resource NSR cut-off values for Greens Creek are $210/ton for all zones except the Gallagher Zone at $215/ton; metallurgical recoveries (actual 2022): 81% for silver,
72% for gold, 82% for lead, and 89% for zinc.
(14) The resource NSR cut-off values for Lucky Friday are $200.57/ton for the 30 Vein, $227.90/ton for the Intermediate Veins and $198.48/ton for the Lucky Friday Veins;
metallurgical recoveries (actual 2022): 95% for silver, 95% for lead, and 88% for zinc.
(15) The average resource cut-off grades at Casa Berardi are 0.11 oz/ton gold for underground and 0.034 oz/ton gold for open pit; metallurgical recovery (actual 2022): 87% for gold; US$/CAN$ exchange rate: 1:1.3.
(16) The resource NSR cut-off value at Keno Hill is $129.10/ton (CAN$185/tonne); using minimum width of 4.9 feet (1.5m); metallurgical recovery: 93% for silver, 25% for gold,
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93% for lead, 72% for zinc; US$/CAN$ exchange rate: 1:1.3.