Keywords: NTS - Big Hole Drilling 002.jpg en The IDECO 2500 used at the Nevada Test Site is a 2000 horsepower diesel electric rig capable of drilling holes 72 to 140 inches in diameter to depths of 4 000 feet The rated capacity of its 158 foot pyramid mast is 1 400 000 pounds 817 NF-52 Federal Government of the United States PD-USGov Drilling machines Nevada Test Site Big Hole Drilling |