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Quarry accidents in the United States :during the calendar year 1921

Quarry accidents in the United States :during the calendar year 1922

Falls of roof and coal in bituminous coal-mines

Published Year

• 1920-1929 (3)

Subject

• Mine accidents (3) *
• Quarries and quarrying--United States (2)
• Bituminous coal (1)
• Bituminous coal mines and mining (1)
• Bituminous coal--Pennsylvania (1)
• Coal mine accidents (1)
• Coal mine accidents--Statistics (1)

Author

• Adams, William W. (3) *

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