Vibrator-type multiple-shot blasting unit

Author: Gibson, F. C.
Additional Authors: Brown, F. W.
Year: 1947
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:4136
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number: 4136
Subject: Mine explosions
Link: https://hdl.handle.net/2027/mdp.39015078495309

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