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Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
4 results returnedDrillability studies :percussive drilling in the field
A comparison of borer, ripper, and conventional mining products in Illinois No. 6 seam coal
Tunneling machine research :development of an experimental full-scale research rock cutting device
Application of large-hole burn cut in room-and-pillar mining
Published Year
Subject
- Boring machinery (2)
- Blasting (1)
- Coal--Illinois--Analysis (1)
- Coal-handling (1)
- Cutting machines (1)
- Mining engineering (1)
- Mining engineering--Illinois (1)
- Mining machinery (1)
- Percussion drilling (1)
- Tunneling (1)
- Tunneling--Equipment and supplies (1)
Author
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