Browse TRAIL Inventories

Gold mining and milling methods and costs at the Vallecito Western Drift mine, Angels Camp, Calif.

Milling methods and costs at the concentrator of the Premier Gold Mining Co., Ltd., Premier, B.C., Canada

Milling methods and costs at the concentrator of the St. Joseph Lead Co., Atlanta, Idaho

Gold mining and milling in the Black Canyon area, Yavapai County, Ariz.

Mining and milling methods at the Pilgrim mine, Chloride, Ariz.

Gold mining and milling in Idaho County, Idaho

Gold mining and milling in northeastern Oregon

Saving gold by means of corduroy


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