jackhammer

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jackhammer

[′jak‚ham·ər]
(mining engineering)

jackhammer

1. An airhammer.
2.A hand-operated, pneumatic, rock drill.
References in periodicals archive ?
In contrast, jackhammering requires two workers who can complete only about six to eight holes per day.
Jackhammering is very hard on people and it really wears them out.
With all the advantages of core drilling manholes, I wouldn't think of using jackhammering on a project like this again.
Based on an average wage of $11 per hour, jackhammering one manhole takes two manhours for a total of $22 in labor.
In contrast to the irregular holes arid chunks of debris produced by jackhammering, the drill cuts cleanly, yielding uniform cores that can usually be removed in one piece.