A bore hole was drilled early Wednesday into the area of a West Virginia coal mine where several miners, unaccounted for following an explosion Monday, are expected to be, Gov. Joe Manchin said.
Pipes were lowered into the hole, and officials banged on the pipes in an effort to contact those underground, but there was no response, Manchin said.
The hole - the first of four - punched through about 4:15 a.m. ET, the governor said. Two more holes were under way, and a fourth is planned.