Keywords: Sl-1-ineel61-667.jpg en The stretcher rig Army volunteers from a special Chemical Radiological Unit at Dugway Proving Ground practiced before a crane inserted the rig into the SL-1 reactor building to collect the body of the man impaled to the ceiling directly above the reactor vessel Proving the Principle U S Department of Energy Idaho Operations Office ISBN 0-16-059185-6 http //www inl gov/proving-the-principle/chapter_15 pdf Idaho National Engineering and Environmental Laboratory INEEL 61-667 1961-01-08 43 51745 -112 8242 PD-USGov 1961 in the United States SL-1 Reactor Dugway Proving Grounds Great Salt Lake Desert Mountain ranges of Utah |