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The Mk 30 Mod 1 Tactical Atomic Demolition Munition (TADM) was a portable atomic bomb, consisting of a Mk 30 warhead installed in a XM-113 case. The XM-113 was 26 inches (660 mm) in diameter and 70 inches (1,800 mm) long, and looked like corrugated culvert pipe. The whole system weighed 840 pounds (380 kg).
Test of a deep water bomb against ship hulls. Hardtack I Umbrella: US June 8, 1958: Inside Enewetak Atoll, PPG 46 m (151 ft), 46 m (151 ft) 9 kt: Test of a shallow water bomb on ocean floor against ship hulls. 1961 122 (Korall-1) USSR October 23, 1961: Novaya Zemlya: 20 m (66 ft), unknown 4.8 kt: A T-5 torpedo test. Dominic Swordfish: US May 11 ...
Development and testing concluded on 13 May 1943 with the dropping of a live, cylindrical Upkeep bomb 5 miles (8 km) out to sea from Broadstairs, Kent, by which time Wallis had specified that the bomb must be dropped at "precisely" 60 ft (18 m) above the water and 232 mph (373 km/h) ground speed, with back-spin at 500 rpm: the bomb "bounced ...
Video of the test—12 second intro. Operation Wigwam [1] involved a single test of the Mark 90 "Betty" nuclear bomb.It was conducted between Operation Teapot and Project 56 on May 14, 1955, about 500 miles (800 km) southwest of San Diego, California. 6,800 personnel aboard 30 ships were involved in Wigwam.
They would release a "stick" of two to four bombs, usually 500 lb (230 kg) or 1,000 lb (450 kg) bombs preferably equipped with four- to five-second time delay fuzes. The bombs would "skip" over the surface of the water in a manner similar to stone skipping and either bounce into the side of the ship and detonate, submerge and explode next to ...
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These devices would detonate the bomb if it was moved in any way. Typically, the safety-arming device used was a clockwork Memopark timer, which armed the bomb up to 60 minutes after it was placed [92] by completing an electrical circuit supplying power to the anti-handling
The four-minute warning was a public alert system conceived by the British Government during the Cold War and operated between 1953 and 1992. The name derived from the approximate length of time from the point at which a Soviet nuclear missile attack against the United Kingdom could be confirmed and the impact of those missiles on their targets.