Search U.S. government technical reports digitized or harvested by TRAIL.
The third annual West Virginia state safety day meet :Bluefield, W. Va., September 22, 1928
International Conference of Mine-Safety Research at Buxton, England, July 31, 1931
Noise controlproceedings: Bureau of Mines Technology Transfer Seminars, Pittsburgh, Pennsylvania, July 24, 1984, and Denver, Colorado, July 26, 1984