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- Noise 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
- Drillability studies-laboratory percussive drilling
- Energetics of percussive drills