Browse TRAIL Inventories

Guarding trolley wires in mines

Notes pertaining to safety inspections of permissible electric mine equipment

Data in reference to installation of cables in shafts and boreholes

An international viewpoint on safeguarding electrical equipment used in gassy mines

Electrical viewpoint in a complete safety survey of a coal mine

Permissible electrically operated air compressors

Bureau of Mines apparatus for demonstrating electrical ignition of mine gas

Permissible electrically operated room hoists

Permissible electrically operated hand-held coal drills

The importance of adequate voltage for distribution systems in coal mines

Coal-mine fires of electrical origin :their cause and prevention

State regulations pertaining to the use of internal-combustion engines in coal and metal mines and in tunnels

Permissible electrically operated post drills and drilling machines

Installation of high-tension power circuits in coal mines

Reducing "nipping" hazards when tramming coal-mining machinery

State regulations pertaining to hoisting of men

Some signaling systems in metal-mine shafts


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