Last week, rescue coordinator Andre Sougarret said initially the Schramm T-130, would be used to drill a 12-inch bore hole down to the miners to enable rescue workers to deliver larger survival items for the miners, but he said if possible the same drill would be used to widen the hole to 28 inches -- sufficient to hoist the miners back to the surface.
It is currently drilling a 17.5-inch diameter hole -- smaller than the 28 inches required to rescue the miners -- in an effort to realign after veering off course over the weekend.