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Mining methods and costs at the Central-Eureka Mine, Amador County, Calif. by Spiers, James. is a nonfiction available to read on EtoBox.

What is Mining methods and costs at the Central-Eureka Mine, Amador County, Calif. about?

This papaer describing the mining practice at the Central-Eureka mine is one of a series of similar papers being prepared by the United States Bureau of Mines on mining practices, methods, and costs in the various mining districts of the United States. The mining practices described in the paper are illustrative of the methdos employed in the exploitation of comparatively low-grade gold ores under the extremely heavy and swelling ground conditions which occur in the Mother Lode belt of California

Who reads Mining methods and costs at the Central-Eureka Mine, Amador County, Calif.?

Author

Spiers, James.

Publisher

U.S. Dept. of the Interior, Bureau of Mines, 1931.

Published

1931

Language

EN

Category

nonfiction