Quecreek Mine rescue

（重定向自Quecreek）

The 6 in (15 cm) diameter, 240 ft (73 m) deep air shaft drilled early in the response effort to ensure the miners were able to breathe.

Second rescue shaft, located near the initial hole, drilled in case issues prevented further drilling of Rescue Hole No. 1. Drilling of this hole ceased at 150 ft (46 m) after the first shaft reached the mine.

The airlock fashioned to be installed on top of the rescue shaft, designed to equalize the pressure between the mine and the surface and prevent an influx of water created by a pressure imbalance.

The Quecreek Mine rescue took place in Somerset County, Pennsylvania, when nine miners were trapped underground for over 77 hours, from July 24 to 28, 2002. All nine miners were rescued.

单词	Quecreek
释义	Quecreek 英语百科 Quecreek Mine rescue （重定向自Quecreek） The Quecreek Mine rescue took place in Somerset County, Pennsylvania, when nine miners were trapped underground for over 77 hours, from July 24 to 28, 2002. All nine miners were rescued.
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