Browse TRAIL Inventories

Coal-mining methods and practices and electric power requirements in the Bull Mountain coal field, Montana

Effect of temperature on flame-arresting properties of flat joints in explosion-proof mine equipment

A study to determine factors causing pressure piling in testing explosion-proof enclosures

Inspection and testing of mine-type electrical equipment for permissibility :revision of Information circular 7185

Electric-power-distribution system, potash mine and refinery, Duval Sulphur & Potash Company, Carlsbad, N. Mex.


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