Milling methods and costs at the lead concentrator of the Hecla Mining Co., Gem, Idaho
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Main Author: | Zeigler, William Le Verne, 1891- |
---|---|
Other Authors: | United States. Bureau of Mines. |
Format: | Book |
Language: | English |
Published: |
[Washington] :
Dept. of Commerce, U.S. Bureau of Mines,
1932.
|
Physical Description: |
16 pages : illustrations ; 28 cm. |
Series: |
Information circular (United States. Bureau of Mines) ;
6600. |
Subjects: |
In Prospector
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