Search
Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
7 results returnedSearch results
- Control of roof and prevention of accidents from falls of rock and coal :suggested roof supports for use at faces in conjunction with mechanical loading
- Methods of excavation and roof support used in some recently constructed tunnels
- Tunneling machine research :development of an experimental full-scale research rock cutting device
- Tunneling machine research :interaction between disk-cutter grooves in rocks
- Tunnel boring technology:disk cutter experiments in metamorphic and igneous rocks
- Tunneling machine research :size distribution of rock fragments produced by rolling disk cutters
- Correlation of laboratory cutting data with tunnel boring machine performance