Engineering & TechnologyGold mining and milling methods and costs at the Vallecito Western Drift mine, Angels Camp, CalifDon Steffa![Gold mining and milling methods and costs at the Vallecito Western Drift mine, Angels Camp, Calif]()
Gold mining and milling methods and costs at the Vallecito Western Drift mine, Angels Camp, Calif
Don Steffa
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“Gold mining and milling methods and costs at the Vallecito Western Drift mine, Angels Camp, Calif” by Don Steffa: a public-domain book in “Engineering &…
Catalogue details
- Author
- Don Steffa
- Category
- Engineering & Technology
- Language
- English
- Source
- HathiTrust