Mining practices and safety at the Lava Cap Gold Mining Corporation mines, Nevada City-Grass Valley district, California.
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Main Author: | |
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Corporate Author: | |
Other title: | Mining and safety practices, Lava Cap Mines, Calif. |
Format: | Government Document Book |
Language: | English |
Published: |
Washington :
U.S. Govt. Print Off,
1941.
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Series: | Technical paper (United States. Bureau of Mines) ;
619. |
Subjects: |