Operation Upshot Knothole: Grable
The footage above shows “Grable,” part of Operation Upshot Knothole—which was a series of nuclear tests that took place in Nevada in 1953. The Grable test was unique due to the type of weapon involved: the bomb was fired in an MK-9 artillery shell from a cannon (nicknamed “Atomic Annie”). The shell flew a distance of seven miles before it made impact and exploded. Buses and cars can be seen being thrown around like toys, while the shockwave from the bomb spins outwards, warping and utterly transforming the surrounding landscape.
