Search U.S. government technical reports digitized or harvested by TRAIL.
Wanted :more detailed reports on electrical accidents
Safeguarding electrical equipment used in gassy mines :European practice
Development and safety of the storage-battery locomotive
Electrical motored equipment :approvals and extensions
Electrical accident prevention
Safeguarding electrical equipment used in gassy mines :European practice.
Performance tests for trailing cables
List of permissible mine equipment
List of permissible mine equipment
Suggestions for wiring permissible equipment
Specially recommended trailing cables
List of permissible mine equipment
Data in reference to installation of cables in shafts and boreholes
List of motors available to prospective builders of permissible outfits
250 versus 500 volts or more for circuits in gassy coal mines
Evolution of methane detecting devices for coal mines
An international viewpoint on safeguarding electrical equipment used in gassy mines
List of permissible mine equipment
List of permissible mine equipment
Milestones in mine-safety legislation
List of permissible mine equipment :approved to January 1, 1937
List of permissible mine equipment approved during 1937
Fatal and nonfatal electrical accidents in coal mines
State regulations pertaining to hoisting of men
Investigation of electrical equipment, safety lamps, and gas detectors for safety
List of permissible mine equipment approved to January 1, 1940
A quarter century of mechanized mining:notes on permissibility
List of permissible mine equipment approved to January 1, 1942