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Timbering along the robbing line :factors influencing falls of roof in coal mines

Stop, look and listen! :the roof is going to fall

State laws relating to coal-mine timbering

A study of falls of roof and coal in mines in the number 8 field of eastern Ohio

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

A study of falls of roof and coal in mines of Harrison County, West Virginia

A study of mine roof of the Pittsburgh coal bed in the Pittsburgh mining district

Timber withdrawing and devices used for this purpose in some coal mines

Published Year

• 1920-1929 (3)
• 1930-1939 (5)

Subject

• Mine timbering (8) *
• Coal mines and mining (4)
• Coal mines and mining--Safety measures (2)
• Coal mines and mining--Pennsylvania (1)
• Coal mines and mining--Pennsylvania--Westmoreland County (1)
• Mining engineering (1)
• Mining law (1)

Author

• Paul, J. W. (8) *
• Calverley, Joseph Gladstone, (1)
• Craighead, S. J. (1)
• Geyer, J. N. (1)
• Geyer, John Nicholas, (1)
• Plein, L. N. (1)
• Plein, Leopold Nicholas, (1)
• Tomlinson, H. (1)

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