West Virginia Miners : Could Rescue Chambers save them?

Monday’s explosion at a West Virginia coal mine is becoming a possible test case for the benefit of rescue chambers, which federal legislators mandated all mine operators have installed four years ago to save lives underground in case disaster strikes.
Rescue workers at the Upper Big Branch South Mine in Whitesville have been trying all week to reach two such chambers with hopes of saving four missing miners.

An explosion Monday afternoon killed 25 miners and hospitalized two others, in what is considered the worst mining disaster in 25 years.
The high cost of energy in America was paid in human lives this week, with the deaths of more than two dozen miners in a massive explosion at the Upper Big Branch coal mine in West Virginia. It’s the worst mine disaster in a quarter of a century.