Waste Isolation Pilot Plant
A Waste Isolation Pilot Plant is a place where radioactive waste is disposed. Transuranic (TRU) waste is a type of radioactive waste that can be very dangerous if not disposed of correctly. This where the Waste Isolation Pilot Plant  (WIPP) comes into play. The WIPP is a plant designed to isolate different types of radioactive waste. TRU from old weapons used during the cold war is sent to Carlsbad, NM from all around the United States. At the WIPP in Carlsbad waste is isolate in buried in ancient salt formations deep beneath the surface at about 2,150 feet below the Earth's surface.
http://www.aboutnuclear.org/view.cgi?fC=Waste,Waste_Storage_and_Disposal,Deep_Repository_Disposal