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Method and cost of mining the Upper and Lower Freeports and the Lower Kittanning coal in a group of mines in Western Central Pennsylvania

Method and cost of mining the Pittsburgh, or no. 8, coal bed in four eastern Ohio mines

Reducing accidents from falls of roof in coal mines

Roof support in coal mines in the Irwin, Greensburg and Latrobe Basins, Westmoreland County, Pa.

Published Year

• 1920-1929 (2)
• 1930-1939 (2)

Subject

• Coal mines and mining--Pennsylvania--Westmoreland County (2)
• Coal mine accidents (1)
• Coal mines and mining--Ohio (1)
• Coal mines and mining--Pennsylvania--Armstrong County (1)
• Mine safety (1)
• Mine timbering (1)

Author

• Paul, J. W. (4)
• Tomlinson, H. (4) *
• Craighead, S. J. (1)
• Owings, C. W. (1) *

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