Keywords: Exercise Desert Rock IV (Tumbler-Snapper George) 001.jpg Nevada Proving Grounds - June 1 1952 Sixth Army troops from Camp Desert Rock attack towards an atomic blast during a maneuver held by the Army at the AEC's Nevada Proving Grounds in conjunction with the Atomic Energy Commission's Tumbler-Snapper George nuclear test The troops in foxholes 7 000 yards from the blast charged forward in battle formation as soon as the shock wave swept over their position -- about 20 seconds and advanced several thousand yards towards ground zero before being halted by radiological safety rules 943 TS-52-77 1952-06-1 Federal Government of the United States PD-USGov Tumbler-Snapper George Desert Rock exercises M24 Chaffee Tanks of the United States |