Search U.S. government technical reports digitized or harvested by TRAIL.
The action of acid mine water on the insulation of electric conductors.A preliminary report
State mining laws on the use of electricity in and about coal mines
Approved Explosion-Proof Coal-Cutting Equipment
The relative safety of brass, copper, and steel gauzes in miners' flame safety-lamps
Operation and maintenance of electrical equipment approved for permissibility by the Bureau of Mines
Why miners' portable electric lamps require safety devices
Permissible explosives, mining equipment, and apparatus, approved prior to March 15, 1922
Suggestions for the Design of Electrical Accessories for Permissible Mining Equipment
Suggestions for the Design of Electrical Accessories for Permissible Mining Equipment
Electric Shot-Firing in Mines, Quarries, and Tunnels
Wanted :more detailed reports on electrical accidents
Safeguarding electrical equipment used in gassy mines :European practice
Development and safety of the storage-battery locomotive
Permissible single-shot blasting units
Experiments in Underground Communication Through Earth Strata
List of permissible mining equipment
Electrical motored equipment :approvals and extensions
Electrical accident prevention
Safeguarding electrical equipment used in gassy mines :European practice.
State regulations governing explosion-proof type electric motors in coal mines
List of permissible mining equipment
Electrical safety inspection :suggestions for mine-safety engineers
Safeguarding electrical equipment used in gassy mines :European practice:
Safeguarding electrical equipment used in gassy mines :European practice:
Safeguarding electrical equipment used in gassy mines :European practice:
Hazards from low or under voltage
State regulations governing the use of trolley wires in mines
Permissible Storage - Battery Locomotives and Power Trucks
Performance tests for trailing cables
List of permissible mine equipment
How leakage of current from an electric shot-firing circuit causes misfires
Teaching safety through the approval plate
Points to be considered in the design of covers for explosion-proof compartments
The grounding of electric systems in and around mines
Specially recommended trailing cable
Permissible Electric Mine Lamps
The overheating of rubber-sheathed trailing cables
List of permissible mine equipment
Suggestions for wiring permissible equipment
Specially recommended trailing cables
List of permissible mine equipment
Permissible Coal-Handling Equipment: Approved from January, 1926, to December, 1930, Inclusive