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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

Timbering regulations in certain coal mines of Pennsylvania, West Virginia, and Ohio

Reducing accidents from falls of roof in coal mines

What the coal miners can do to prevent injury from falls of roof

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

Falls of roof and coal in mines operating in the Pittsburgh coal bed in Marion and Monongalia counties, W. Va.

Falls of roof and coal in mines operating in the Sewickley coal bed in Monongalia County, W. Va.

Falls of roof and coal in mines operating in the Pittsburgh Coal Bed, Panhandle District, West Virginia

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

How to prevent death and injury from falls of roof in coal mines

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

Places of occurrence of injury from falls of roof

A study of roof in Pennsylvania mines contiguous to Monongahela River

Falls of roof in mines operating in the Pittsburgh Coal Bed, West Virginia

A study of mine roof of the coking district of Western Pennsylvania

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


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