Search U.S. government technical reports digitized or harvested by TRAIL.
Investigation of electrical equipment, safety lamps, and gas detectors for safety
Portable methane-detecting appliances approved under United States Bureau of Mines standard
Accuracy and precision of several portable gas detectors
Accuracy and precision of several portable gas detectors:additional studies, a supplement to RI 7811
An analyzer for determining helium-4 in the parts-per-billion range
An improved analyzer for determining helium-4 in parts-per-billion range