Browse TRAIL Inventories

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

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

How are men killed in mines by falls of roof and coal?

Area of unsupported roof in coal mines :conditions and factor[s] for consideration

What the superintendent of a coal mine might do to prevent injury from falls of roof

What the mine foreman can do to prevent injury from falls of roof in coal mines

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

Methods of development and pillar extraction in mining the Pittsburgh coal bed in Pennsylvania, West Virginia, and Ohio


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