Recruits spend much of their time on parade-ground drill and firearms practice.

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It would have the ability to drill 2m into the ground.

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To do that, it will make its way to locations thought most likely to support life and drill up to two metres into the ground.

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That was as deep as one could look into the earth with the available geological tools--and also about as far into the ground as anyone knew how to drill a well and push pipe into the hole.

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ExxonMobil is interested in prolonging the shelf life of drill bits, which wear out after only hours boring holes in the ground.

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Oil drillers get a sweet package of tax breaks, including writeoffs when they drill a well and more writeoffs as the hydrocarbons come out of the ground.

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When crews prepared to drill the giant new cavity under Second Avenue, they first had to freeze the ground to about minus 20 degrees so as not to destabilize the buildings above as the boring machine cut through.

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Sections of a drill which broke through the roof of a rail tunnel came from a construction site above the ground, accident investigators have found.

BBC: Construction drill came from site above rail tunnel