"Hopefully before that," Mining Minister Laurence Golborne told reporters about the time when a rescue drill is expected to pierce the roof of the mine. As of Friday afternoon, it was 40 meters (about 130 feet) away. "Maybe tomorrow morning, early Saturday. We have to wait and see."
Once the mine has been reached, the rescue process could begin within three to four days, Golborne told reporters. But mine engineers must decide first whether they need to encase the shaft with steel tubing to prevent rockfalls and further collapses during the extraction process. "If we do a full casing of the hole, those three to four days could go to eight to 10 days," Golborne told reporters.
One of the rescue coordinators, Rene Aguilar, an engineer for state copper company Codelco, said this week they may encase just the first 100 meters (328 feet) of the shaft, a process that could take just 10 hours.
Before anyone can be rescued, the hole must be widened so that the rescue capsule -- dubbed the Phoenix -- can land cleanly inside the tunnel without getting hung up on obstructions, Golborne said. To accomplish that, explosives will be lowered to the miners for use in widening the shaft, said Golborne, who expressed little concern that the subterranean pyrotechnics would pose any danger to the men.
Read more: Rescue workers near their goal as Chile awaits
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