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2 results returnedMining methods and costs at the Holden Mine, Chelan Division, Howe Sound Co., Chelan County, Wash.
Mining Methods and Costs at the Anaconda Company Berkeley Pit, Butte, Montana
Published Year
Subject
- Copper mines and mining -- Montana -- Butte. (1)
- Copper mines and mining--Washington (State)--Chelan County (1)
- Strip mining -- Montana. (1)
Author
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