4D twin · seismic-tied
Rochester
Coeur Mining · Pershing County, NV · site LTH-ROCHESTER-NV
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1886 m NAVD88 · Vp low —— high
Ore–seismic crosswalk
Each shell is tied to the survey that would image it. Desk compilation from published USGS / industry methods — not the operator’s confidential cube. Not a reserve.
| Ore shell | Survey | Method | Year | Tie | Vp m/s |
|---|---|---|---|---|---|
| Koipato rhyolite Ag | Koipato refraction | Refraction | 2017 | Ties the shell | 800–3800 |
| Nevada Packard satellite | Packard MASW | MASW | 2019 | Ties the shell | 500–2800 |
PhD geological read
User-initiated. Grounded in MCS 2026, the mapped ore shells, and the seismic crosswalk. Not a reserve.
Koipato rhyolite-hosted veins and disseminations. Heap leach. Largest U.S. primary silver mine.
Capacity
Workforce380
Nameplate200 tpy
Utilization81%
Effective162 tpy
t / person-year1
Landform is site-typed: porphyry pit, block cave, underground vein/reef, Carlin, gravel, quarry. Seismic fences are Vp-banded.