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Jeff Hart and a handful of other drilling engineers from Colorado have friends all over Chile now; it was their yeoman work over 33 days that bored a hole wide and deep enough to accommodate the ongoing rescue of trapped miners.
33 days, 33 miners, one 625-meter escape shaft with a 28" diameter. Gotta love it.
UPDATE: They're all safe; the shift supervisor volunteered to be the last man up. And Sebastian Pinera, president of Chile, also acquited himself well.
See also this essay from Dan Henninger of the Wall Street Journal. Just to whet your appetite:
If those miners had been trapped a half-mile down like this 25 years ago anywhere on earth, they would be dead. What happened over the past 25 years that meant the difference between life and death for those men?
Short answer: the Center Rock drill bit.
This is the miracle bit that drilled down to the trapped miners. Center Rock Inc. is a private company in Berlin, Pa. It has 74 employees. The drill's rig came from Schramm Inc. in West Chester, Pa. Seeing the disaster, Center Rock's president, Brandon Fisher, called the Chileans to offer his drill. Chile accepted. The miners are alive.
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