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Blasting to lessen bowlders in hard-ore stopes

Accidents due to explosives in metal mines of the Southwest, as shown by records in Arizona

Permissible single-shot blasting units

Published Year

• 1920-1929 (3) *

Subject

• Blasting (3) *
• Explosives (1)
• Mine accidents (1)

Author

• Gardner, E. D. (2)
• Hooker, A. B. (1)
• Howell, S. P. (1)
• Ilsley, L. C. (1)

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