Mining Expert On Chilean Mine Rescue
An enormous drill began preliminary work Monday at the San Jose Mine in Chile to carve a half-mile chimney through solid rock to free the 33 men trapped in a Chilean mine, their ordeal now having equaled the longest known survival in an underground disaster. The 31-ton drill bored 50 feet into the rock, the first step in the weeklong digging of a “pilot hole” to guide the way for the rescue. Later the drill will be outfitted with larger bits to expand the hole and pull the men through — a process that could take four months.
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02. Sep, 2010 