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The action of acid mine water on the insulation of electric conductors.A preliminary report

Approval system of the Bureau of Mines, as applied to permissible storage-battery locomotives :(fourth complete investigation under schedule 15)

Approval system of the Bureau of Mines as applied to permissible storage-battery locomotives :third complete investigation under schedule 15

Electrical accident prevention

Hazards from low or under voltage

Teaching safety through the approval plate

Points to be considered in the design of covers for explosion-proof compartments


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