Active list of permissible explosives and blasting devices approved before Jan. 1, 1965 / by N.E. Hanna and P.A. Richardson.
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Format: | Government Document Book |
Language: | English |
Published: |
[Washington, D.C.] :
U.S. Dept. of the Interior, Bureau of Mines,
1965.
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Series: | Information circular (United States. Bureau of Mines) ;
8249. |
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