Blasting to lessen bowlders in hard-ore stopes.
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| Main Authors: | , |
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
Govt. Print. Off,
1926.
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| Series: | Technical paper (United States. Bureau of Mines) ;
383. |
| Subjects: |
| Physical Description: | iv, 23 pages : including illustrations, tables ; 25 cm. |
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