Search
Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
5 results returnedSearch results
- Design and test operation of a pneumatic vibrating-blade planer :a progress report on phosphate-mining research, 1956-57
- Test operation of a pneumatic vibrating-blade planer in phosphate and coal :a progress report on planer-mining research, 1958-60
- Test operation of a pneumatic vibrating-blade planer :a progress report on phosphate mining research
- Beneficiation of a phosphate ore produced by borehole mining
- Economic evaluation of borehole and conventional mining systems in phosphate deposits