Word: marl
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Dates: during 1990-1999
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...mainland. On Oct. 30 a team of workers at the face of the French section of the service tunnel that is being bored 131 ft. below the bed of the Channel waited for a thin steel probe, drilled from the British side, to pierce the wall of chalk marl in front of them. The 2-in.-diameter aperture opened by the probe could not be seen at first, but then the British crew sent a blast of compressed air through the hole, blowing out the last crumbs of marl...