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Accidents from falls of rock or ore in metal mines

Accidents from falls of rock or ore at metal and nonmetallic mines :metal-and nonmetallic-mine accident-prevention course.

Published Year

• 1940-1949 (1)
• 1950-1959 (1)

Subject

• Mine accidents--United States (2) *
• Mine safety--United States (1)

Author

• Denny, E. H. (1)
• Stott, Roy G. (1)
• Thomas, Edward. (1)

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