Search
Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
7 results returnedSearch results
- Tunnel boring technology :disk cutter experiments in sedimentary and metamorphic rocks
- Tunnel boring technology:disk cutter experiments in metamorphic and igneous rocks
- Toward development of a hard-rock mining machine--drag cutter experiments in hard abrasive rocks
- Large-scale laboratory drag cutter experiments in hard rock
- A laboratory comparison of drag cutting methods in hard rock
- Large-scale testing of the ripper fragmentation system
- An investigation of crack propagation with a wedge indenter to improve rock fragmentation efficiency