Search
Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
6 results returnedSearch results
- Permissible explosives, mining equipment, and apparatus, approved prior to March 15, 1922
- Explosion in school building at New London, Tex., March 18, 1937
- Gas explosions in buildings :their cause and prevention
- Gas explosions in buildings :their cause and prevention
- Explosions in coal mines caused by smoking
- Protection against lightning at surface and underground mining plants
