Browse TRAIL Inventories

Safety achievements of a Pennsylvania bituminous-coal mine and of a coal-mine superintendent

Safety at the mines of the Ford Collieries Co., Curtisville, Pa.

Mining anthracite without roof-fall accidents at Colonial Colliery, Colonia Colliery Co., Natalie, Pa.

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

Detailed study of 60-day nonfatal underground accidents in Pennsylvania bituminous coal mines during 1939


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