Active list of permissible explosives and blasting devices approved before December 31, 1972 :supercedes Information Circular 8493

Author: Ribovich, John.
Additional Authors: Watson, Richard W.
Year: 1973
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.27:8597
Series: Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number: 8597
Subjects: Coal mines and mining--Explosives
Explosives--Law and legislation--United States
Blasting
Link: https://hdl.handle.net/2027/mdp.39015078516310

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