Search U.S. government technical reports digitized or harvested by TRAIL.
The value of oxygen breathing apparatus to the mining industry
List of devices for respiratory protection approved by the U.S. Bureau of Mines
List of devices for respiratory protection approved by the U.S. Bureau of Mines
Use of respiratory protective devices under abnormal air pressure
Respiratory protective devices approved by the Bureau of Mines as of October 16, 1958
Gas masks for respiratory protection against phosphine
Respiratory protective devices approved by the Bureau of Mines as of October 1, 1965
Low-temperature performance of compressed-oxygen closed-circuit breathing apparatus