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2 results returnedAccidents from explosives at metal and nonmetallic mines
Causes of Roof-Fall Fatalities in Anthracite and Bituminous-Coal Mines, 1955 and 1956
Published Year
Subject
- Mine accidents -- United States. (2) *
- Mine explosions -- United States -- Prevention. (1)
- Mine roof control. (1)
- Mine safety -- United States. (1)
Author
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