Team Finishes the Job Early Drilling 550 Feet With 60-Inch Bit
A Boart Longyear drilling team recently completed a ventilation shaft for an underground longwall coal mine in Wyoming.
Guiding a 60-inch bit through a challenging formation that includes two aquifers, the drillers reached a depth of 550 feet. The task was completed earlier than expected, in four weeks, despite delays in project startup.