Mining methods and costs at the Black Butte quicksilver mine, Lane County, Oregon /
| Main Author: | |
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| Corporate Author: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
[Washington, D.C.?] :
U.S. Dept. of Commerce, Bureau of Mines,
1930
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| Series: | Information circular (United States. Bureau of Mines) ;
6276 |
| Subjects: |