The drill bit on the Schramm T-130 is getting very, very close. There are reports that it, in fact, broke through on Thursday. If it didnt, and I suspect this to be the case, the penetration of the last few metres must procede with ultimate care. The haven in which the miners have been sheltering is obviously man-made and must, therefore, have been blasted out. In such a case the rock above might be fractured for two or three metres or even more, depending on the rock type. The drill ...
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