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air drillTo drill using gases (typically compressed air or nitrogen) to cool the drill bit and lift cuttings out of the wellbore, instead of the more conventional use of liquids. The advantages of air drilling [..]
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air drill Implement used to plant seeds using air to move the seeds from the hopper to the coulters
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air drill<equipment> A drill driven by the elastic pressure of condensed air; a pneumatic drill. (06 Aug 1998)
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air drillRotary drilling using air pumped down the drill string instead of circulating drilling fluid.
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