Keywords: Hardtack II 001.jpg en Nuclear history in less than two-thousandths of a second is recorded by a camera capable of speeds in excess of 15 000 frames per second This sequence taken at the Nevada Test Site in 1958 shows a low-yield detonation atop a 50-foot wooden tower 1066 XX-62 Federal Government of the United States 1958 PD-USGov Operation Hardtack II |