Active list of permissible explosives and blasting devices approved before Feb. 28, 1961 / by N.E. Hanna.
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Format: | Government Document Book |
Language: | English |
Published: |
Washington, D.C. :
United States Dept. of the Interior, Bureau of Mines,
1962.
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Series: | Information circular (United States. Bureau of Mines) ;
8087. |
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