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Knowles said at all times after the initial blast, entering the mine was simply too risky because of high gas levels and evidence of a smoldering coal fire underground that could be an ignition source. Energy Minister Gerry Brownlee said a range of official inquiries would probe the cause of the disaster and whether it could have been prevented. Whittall said no decision had been made yet on whether the mine would be sealed or what the next step would be. "We can't still go in to an unsafe mine. It's just as unsafe now as it was two hours ago, the gas will still be coming out of the coal, there's still an ignition source, there's no doubt burning methane from that explosion," he told reporters. "But we want our boys back and we want to get them out." The second blast came hours after the first progress in days for the rescue attempt, when a drilling team broke a narrow shaft through to the section of the mine where the missing workers were believed to have been. And two robots crawled their way into the tunnel, giving authorities their first view of the inside of the mine. But officials had become increasingly pessimistic about the chances of pulling the men alive from the mine. Nothing had been heard from the missing miners since the initial blast. New Zealand's mines have been safe historically. The worst disaster was in 1896, when 65 died in a gas explosion at a mine on the same coal seam as the latest tragedy. The most recent was in 1967, when an explosion killed 19 miners in a mine near the Pike River site. While conditions were different, the New Zealand disaster drew initial comparisons with the rescue last month of 33 workers trapped 69 days in a gold and copper mine in Chile.
[Associated
Press;
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