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Definition of rock drill
i. A machine for boring relatively short holes in rock for blasting purposes. It may be a sinker, jackhammer, drifter, or stoper.
Synonym of: Waugh drill
See Also: percussive drill, rotary drill
Ref: Nelson
ii. A roller bit.
Ref: Long
iii. A conical bit for drilling hard rock.
Ref: AGI
Synonym of: Waugh drill
See Also: percussive drill, rotary drill
Ref: Nelson
ii. A roller bit.
Ref: Long
iii. A conical bit for drilling hard rock.
Ref: AGI
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