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Experience with electrical and other means of firing shots of explosives in the anthracite region of Pennsylvania
Preventing accidents by the proper use of permissible explosives
How to use permissible explosives properly
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Published Year
1930-1939 (3) *
Subject
Explosives (2)
Mine safety (2)
Accidents--Prevention--United States (1)
Explosives industry--United States (1)
Mine accidents (1)
Author
Howell, S. P. (3) *
Harrington, D. (2)
