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12 results returned

Rock-dusting in coal mines of the State of Washington

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

Electrical blasting practice as some coal mines in state of Washington

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

Published Year

• 1930-1939 (12) *

Subject

• Coal mines and mining--Washington (State) (3)
• Mines and mineral resources--California (3)
• Coal mines and mining--Washington (State)--Safety measures (2)
• Mine accidents (2)
• Blasting (1)
• Mine explosions (1)
• Mine roof control--Washington (State) (1)
• Mine safety (1)
• Mine safety--Washington (State) (1)
• Mine timbering--Washington (State) (1)
• Mineral dust (1)
• Mines and mineral resources--Washington (State) (1)
• Mining machinery (1)
• Quarries and quarrying--California (1)
• Tunneling--Safety measures (1)

Author

• Ash, S. H. (12) *
• Kudlich, Rudolf H., (1)
• Rankin, Carl R. (1)
• Schoning, John G. (1)
• Smith, Emory. (1)
• Smith, R. W. (1)

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