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Active list of permissible explosives and blasting devices approved prior to June 30, 1941

Active list of permissible explosives and blasting devices approved prior to June 30, 1942

Published Year

• 1940-1949 (2)

Subject

• Blasting--Equipment and supplies--Law and legislation--United States (2)
• Explosives--Law and legislation--United States (2) *
• Mining engineering--Equipment supplies--Law and legislation--United States (2)

Author

• Gaugler, Z. C. (2) *
• Tiffany, J. E. (2)

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