Search
Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
8 results returnedSearch results
- Methods and costs of deepening the Crescent shaft, Bunker Hill & Sullivan Mining and Concentrating Company, Kellogg, Shoshone County, Idaho
- Using precast reinforced-concrete sets in the Pioneer Tunnel of Great Northern Railway's Cascade Tunnel, King County, Wash.
- Design and development of a rock bolt anchored by explosive forming :a progress report
- Field testing of the explosive-anchored rockbolt
- Yield and ultimate strengths of rock bolts under combined loading
- Explosive-expansion center-hole anchor
- Transverse force produced by tensioned expansion-shell-type rock-bolt anchors
- Load loss from rock-bolt anchor creep