Browse TRAIL Inventories

Electrical blasting practice as some coal mines in state of Washington

Rock-dusting in coal mines of the State of Washington

Automatic derailing switch at Roslyn no. 3 mine, Northwestern Improvement Company, Roslyn, Wash.

Safety committees in the coal mines of the state of Washington

An automatic electric man-hoist for slopes or inclines

Systematic timbering rules at the Washington coal mines

Falls of roof and coal in Washington mines

Accident prevention at the New Black Diamond Coal Mine, Washington

Safety practices in tunneling operations at the Hetch Hetchy Water-supply Project, City and County of San Francisco, Calif.

Explosives accidents in California metal mines

Accident experience and cost in California metal mines

Some factors affecting an accident-prevention program in metal mining in California

Water problem in the Pennsylvania anthracite mining region

Use of diesel engines in tunnels

Backfilling problem in the anthracite region as it relates to conservation of anthracite and prevention of subsidence

Analyses of Complex Mixtures of Gases: Application to Control and Extinguish Fires and to Prevent Explosions in Mines, Tunnels, and Hazardous Industrial Processes


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