Search U.S. government technical reports digitized or harvested by TRAIL.
Effects of atmospheres deficient in oxygen on small animals and on men
Precautions to be observed in entering abandoned exploratory shafts and pits
Bureau of Mines apparatus for demonstrating electrical ignition of mine gas
Explosion-proof bulkheads :present practices
An in-situ diffusion parameter for the Pittsburgh and Pocahontas No. 3 coalbeds