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Diamond drillA rotary type of rock drill that cuts a core of rock that is recovered in long cylindrical sections, two cm or more in diameter.
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Diamond drillA drill using small diamond chips embedded on the head of the drill bit to cut the rock and the drill turns.
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Diamond drillA rotary type of rock drill that cuts a core of rock that is recovered in long cylindrical sections, two cm or more in diameter. Diamond driller
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