Chile mine rescue dwarfs others: World's Top 5 mine rescues

2. Pennsylvania: July 2002

When Pennsylvania's Quecreek Mine flooded with water, the nine miners trapped below and those charged with their rescue had to act fast to prevent the miners from drowning. A 240-foot shaft initially drilled to provide oxygen to the men was used to pump air into the shaft, creating an air pocket that was pressurized enough to prevent water from coming in until all the men could be brought out via the same shaft.

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