About Tonopah
The Initial Discovery
Discovered in 1900
- Discovered in 1900 by Jim Butler while chasing after his run-away donkeys – or so the story goes
- Butler likely learned of the veins from the Shoshone People
The 'Second' Assayer
- The first assayer decided the rocks were worthless and threw them away, but the second assayer found something different
- The veins were averaging 3,500 g/t
- Extensive production in the area between 1910 and 1930
- Total production of 175M oz of Ag and 1.86M oz of Au from 8.8M tons of ore
- Average grades of 679 g/t Ag and 7.3 g/t Au or 1,263 g/t AgEq*
*Calculated using 80:1 Au/Ag
Sources: USGS 2018, Sander 1989, Carpenter et al. 1953
Mizpah Hotel, 1920’s
Mizpah Hotel, 2020
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