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Official changes in the active list of permissible explosives and blasting devices for September, 1931 / by Scott Turner.

Official changes in the active list of permissible explosives and blasting devices for August, 1931

Official changes in the active list of permissible explosives and blasting devices for October, 1931

Published Year

• 1930-1939 (3)

Subject

• Coal mines and mining--Safety measures (3) *
• Explosives (3)

Author

• Turner, Scott. (3) *

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