Browse TRAIL Inventories

Permissible electrically operated hand-held coal drills

List of permissible mine equipment approved during 1937

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

Fatal and nonfatal electrical accidents in coal mines

State regulations pertaining to hoisting of men

Inspection and maintenance of mine hoisting ropes

Investigation of electrical equipment, safety lamps, and gas detectors for safety

Permissible electrically operated pumps

List of permissible mine equipment approved to January 1, 1940

Permissible blasting units

Detailed study of 60-day nonfatal underground accidents in Pennsylvania bituminous coal mines during 1939

A quarter century of mechanized mining:notes on permissibility

List of permissible mine equipment approved to January 1, 1942

Permissible methane detectors

Investigations of Permissible Electric Mine Lamps, 1930-40

Some information on automatic coupling of mine cars


Published Year

Subject

Author

‹‹ previous 1 2 next ››