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𝐆The Bulldog Mine is a center of gravity for the San Juan Silver project. Historically, the mine produced 25 million ounces of silver between 1969 and 1985, and Hecla has further identified an existing Inferred Resource of 37 Moz. of silver, 51,750 tons of lead, and 40,800 tons of zinc, exclusive of in-mine and near-mine exploration upside. Since 2011, Hecla has taken strategic steps towards accessing the Bulldog Mine underground infrastructure to confirm, upgrade, and potentially expand these significant resources. Hecla’s extensive property position covers approximately 30 miles of permissive strike length along known mineralized structures offering Hecla the opportunity for impactful discoveries. Surface exploration drilling in 2013 intersected high-grade mineralization on-trend and 1,400 feet north of the nearest Bulldog Mine workings, reinforcing the potential to bring new resources into the projects’ inventory.
Tons(000) | Silver(oz/ton) | Gold(oz/ton) | Lead(%) | Zinc(%) | Silver(000 oz) | Gold(000 oz) | Lead(Tons) | Zinc(Tons) | |
---|---|---|---|---|---|---|---|---|---|
2,570 | 11.3 |
0.01
| 1.4 | 1.1 |
38,203
| 34 | 49,400 |
39,850
|
Tons(000) | Silver(oz/ton) | Gold(oz/ton) | Lead(%) | Zinc(%) | Silver(000 oz) | Gold(000 oz) | Lead(Tons) | Zinc(Tons) | |
---|---|---|---|---|---|---|---|---|---|
– | – | – | – | – | – | – | – | – | |
1,068 |
3.0
| – | 6.4 | 7.7 | 3,177 | – | 67,970 | 82,040 | |
1,068 | 3.0 | – | 6.4 | 7.7 | 3,177 | – | 67,970 | 82,040 | |
2,851 | 3.1 | 5.9 | 5.9 | 8,795 | – | 168,180 | 166,930 |
Heva | Tons(000) | Silver (oz/ton) | Gold(oz/ton) | Lead(%) | Zinc(%) | Silver(000 oz) | Gold(000 oz) | Lead(Tons) | Zinc(Tons) |
---|---|---|---|---|---|---|---|---|---|
Measured Resources (22) | – | – | – | – | – | – | – | – | – |
Indicated Resources (22) | 1,266 | – | 0.06 | – | – | – | 76 | – | – |
M&I Resources (22) | 1,266 | – | 0.06 | – | – | – | 76 | – | – |
Inferred Resources (22) | 2,787 | – | 0.08 | – | – | – | 216 | – | – |
Hosco | Tons(000) | Silver (oz/ton) | Gold(oz/ton) | Lead(%) | Zinc(%) | Silver(000 oz) | Gold(000 oz) | Lead(Tons) | Zinc(Tons) |
---|---|---|---|---|---|---|---|---|---|
Measured Resources (22) | – | – | – | – | – | – | – | – | – |
Indicated Resources (22) | 29,287 | – | 0.04 | – | – | – | 1,202 | – | – |
M&I Resources (22) | 29,287 | – | 0.04 | – | – | – | 1,202 | – | – |
Inferred Resources (22) | 17,726 | – | 0.04 | – | – | – | 663 | – | – |
2016 |
2017 |
2018 |
2019 |
2020 | |
---|---|---|---|---|---|
Silver (ounces) | 4,294,123 | 3,257,738 | 2,037,072 | 1,868,884 | 954,772 |
Gold (ounces) |
34,042
| 25,177 |
14,979
| 15,673 | 7,223 |
2001 |
2002 |
2003 |
2004 |
2005 | |
---|---|---|---|---|---|
Silver (ounces) | 950,002 | 3,432,394 | 4,085,038 | 2,042,173 | 717,860 |
Gold (ounces) |
15,983
| 41,510 |
47,21
| 35,563 | 12,160 |
Oxide | Tons (000) | Silver (oz/ton) | Gold (oz/ton) | Lead (%) | Zinc (%) | Copper (%) | Silver (000 oz) | Gold (000 oz) | Lead (Tons) | Zinc (Tons) | Copper (Tons) |
Measured Resources (17) |
–
|
–
|
–
|
–
|
–
|
–
|
–
|
–
|
–
| – | – |
Indicated Resources (17) | 1,453 | 6.5 | 0.09 | – | – | – | 9,430 | 135 | – | – | – |
M&I Resources (17) | 1,435 | 6.5 | 0.09 | – | – | – | 9,430 | 135 | – | – | – |
Inferred Resources (17) |
3,490
|
6.4
|
0.05
|
–
|
–
|
–
|
22,353
|
182
|
–
|
–
|
–
|
Sulfide | Tons (000) | Silver (oz/ton) | Gold (oz/ton) | Lead % | Zinc % | Copper % | Silver (000 oz) | Gold (000 oz) | Lead (Tons) | Zinc (Tons) | Copper (Tons) |
Measured Resources (17) |
–
|
–
|
–
|
–
|
–
|
–
|
–
|
–
|
–
| – | – |
Indicated Resources (17) | 1,187 | 5.5 | 0.01 | 1.9 | 2.9 | 1.2 | 6,579 | 16 | 22,420 | 34,100 | 14,650 |
M&I Resources (17) | 1,187 | 5.5 | 0.01 | 1.9 | 2.9 | 1.2 | 6,579 | 16 | 22,420 | 34,100 | 14,650 |
Inferred Resources (17) | 385 | 4.2 |
0.01
| 1.6 | 2.3 | 0.9 | 1,606 | 5 | 6,070 | 8,830 | 3,330 |
Tons (000) | Silver (oz/ton) | Copper (%) | Silver (000 oz) | Copper (Tons) | |
---|---|---|---|---|---|
Inferred Resources (12,27) |
100,086
|
1.5
|
0.7
|
148,736
|
658,680
|
Tons (000) | Silver (oz/ton) | Copper (%) | Silver (000 oz) | Copper (Tons) | |
---|---|---|---|---|---|
Inferred Resources (12,28) |
112,185
|
1.6
|
0.7
|
183,346
|
759,420
|