Geothermal heating to save money, energy at Minot
A construction worker drills a hole through a floor in the 5th Bomb Wing headquarters building while installing a geothermal heat system Dec. 15 at Minot Air Force Base, N.D. The building is currently undergoing construction to use geothermal heating by having 39 ground source heat pumps installed in the building along with 30 geothermal wells on the west side of the building. (U.S. Air Force photo/Staff Sgt. Keith Ballard)