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Search U.S. government technical reports digitized or harvested by TRAIL.
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7 results returnedNoise from pneumatic rock drills :analogy studies of muffler designs
Investigations of stresses in a drill bit and rock under static loads
Accuracy in estimating metal content and tonnage of an ore body from diamond-drill-hole data
Drillability studies :statistical regression analysis of diamond drilling
Drillability studies :impregnated diamond bits
Published Year
Subject
- Rock-drills (7) *
- Boring (4)
- Bits (Drilling and boring) (1)
- Diamond bits (1)
- Diamond drilling (1)
- Drilling and boring machinery (1)
- Ores--Sampling and estimation (1)
- Rocks--Analysis (1)
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