The Nevada portfolio (22% of exploration budget) is a high-impact development project – unlocking extraordinary value potential.
Nevada represents a transformative opportunity within Hecla’s portfolio, with multiple high-grade projects offering near-term production potential and district-scale discovery opportunities. Our renewed strategic focus leverages existing infrastructure, proven high-grade systems, and vastly underexplored targets.
Aurora – Walker Lane’s Highest-Grade Historic Producer
Information with respect to proven and probable ore reserves; and measured, indicated, and inferred resources is set forth below.
|
|
Tons (000)
|
Silver (oz/ton) |
Gold (oz/ton) |
Lead (%) |
Zinc (%) |
Silver (000 oz)
|
Gold (000 oz)
|
Lead (Tons)
|
Zinc (Tons)
|
|---|---|---|---|---|---|---|---|---|---|
| Measured Resources (18,19) |
–
|
–
|
–
|
–
|
–
|
–
|
–
|
–
|
–
|
| Indicated Resources (18,19) |
186
|
.85
|
0.38
|
–
|
–
|
158
|
71
|
–
|
–
|
| M&I Resources (18,19) |
186
|
0.85
|
0.38
|
–
|
–
|
158
|
71
|
–
|
–
|
| Inferred Resources (18,19) |
1,108
|
0.45
|
0.433
|
–
|
–
|
501
|
479
|
–
|
–
|
Note: All estimates are in-situ. Resources are exclusive of reserves.
(18) Mineral resources for Fire Creek, Hollister and Midas are reported using a minimum mining width of four feet or the vein true thickness plus two feet, whichever is greater.
(19) Fire Creek underground mineral resources are reported at a gold equivalent cut-off grade of 0.228 oz/ton. Metallurgical recoveries: 90% for gold and 70% for silver.
|
|
Tons (000)
|
Silver (oz/ton) |
Gold (oz/ton) |
Lead (%) |
Zinc (%) |
Silver (000 oz)
|
Gold (000 oz)
|
Lead (Tons)
|
Zinc (Tons)
|
|---|---|---|---|---|---|---|---|---|---|
|
Inferred Resources (24) |
74,584 |
0.07 |
0.029 |
– |
– |
5,232
|
2,178
|
–
|
–
|
Note: All estimates are in-situ. Resources are exclusive of reserves.
(24) Inferred open-pit resources for Fire Creek calculated November 30, 2017 using gold and silver recoveries of 65% and 30% for oxide material and 60% and 25% for mixed oxide-sulfide material. Indicated Resources reclassified as Inferred in 2019. Open pit resources are calculated at $1400 gold and $19.83 silver and cut-off grade of 0.01 Au Equivalent oz/ton and is inclusive of 10% mining dilution and 5% ore loss. Open pit mineral resources exclusive of underground mineral resources. NI43-101 Technical Report for the Fire Creek Project, Lander County, Nevada; Effective Date March 31, 2018; prepared by Practical Mining LLC, Mark Odell, P.E. for Hecla Mining Company, June28, 2018.
Hollister – North America’s Third Highest Grade Gold Mine
Information with respect to measured, indicated, and inferred resources is set forth below.
|
Tons |
Silver
(oz/ton) |
Gold |
Silver |
Gold | |
|---|---|---|---|---|---|
| Measured Resources (18,20) |
– |
– |
– |
– |
– |
| Indicated Resources (18,20) |
95
|
2.38
|
0.547
|
227
|
52
|
| M&I Resources (18,20) |
95
|
2.38
|
0.547
|
227
|
52
|
| Inferred Resources (18,20) |
821
|
2.61
|
0.376
|
2,145
|
309
|
Note: All estimates are in-situ. Resources are exclusive of reserves.
(18) Mineral resources for Fire Creek, Hollister and Midas are reported using a minimum mining width of four feet or the vein true thickness plus two feet, whichever is greater.
(20) Hollister mineral resources, including the Hatter Graben are reported at a gold equivalent cut-off grade of 0.191 oz/ton. Metallurgical recoveries: 88% for gold and 66% for silver
Midas – Northern Nevada Rift’s Premier Asset
Information with respect to measured, indicated and inferred resources is set forth below.
|
Tons |
Silver
(oz/ton) |
Gold |
Silver |
Gold | |
|---|---|---|---|---|---|
| Measured Resources (18,21) |
– |
– |
– |
– |
– |
| Indicated Resources (18,21) |
100
|
5.34
|
0.394
|
536
|
40
|
| M&I Resources (18,21) |
100
|
5.34
|
0.394
|
536
|
40
|
| Inferred Resources (18,21) |
1,665
|
5.09
|
0.413
|
8,466
|
687
|
Note: All estimates are in-situ. Resources are exclusive of reserves. Totals may not represent the sum of parts due to rounding.
(18) Mineral resources for Fire Creek, Hollister and Midas are reported using a minimum mining width of four feet or the vein true thickness plus two feet, whichever is greater.
(21) Midas mineral resources are reported at a gold equivalent cut-off grade of 0.183 oz/ton. Metallurgical recoveries: 90% for gold and 70% for silver. Inferred resources for the Sinter Zone are reported undiluted.
Information with respect to measured, indicated and inferred resources is set forth below.
| Tons(000) | Silver(oz/ton) | Gold(oz/ton) | Lead(%) | Zinc(%) | Silver(000 oz) | Gold(000 oz) | Lead(Tons) | Zinc(Tons) | |
|---|---|---|---|---|---|---|---|---|---|
|
Inferred Resources (26) |
576
|
0.23
|
0.183
|
–
|
– |
135
|
106 |
–
|
–
|
Note: All estimates are in-situ. Resources are exclusive of reserves. Totals may not represent the sum of parts due to rounding.
(26) Inferred resource at Monte Cristo reported at a minimum mining width of 5.0 feet and a 0.094 oz/ton gold cut-off grade. Metallurgical recovery: 85% for gold and 85% silver.
