during defusing, but without causing any injuries. 25 April 1945 – Berghof Hitler's vacation home, the Berghof, near Berchtesgaden was attacked with a mixed force that included six Lancasters of 617 Squadron dropping their last Tallboys. The bombing appeared to be accurate and effective. Postwar The last of the V bombers – the Handley Page Victor – was designed to be able to carry a bomb load that could include a load of two Tallboys internally, or one Grand Slam plus assorted smaller weapons. Unexploded ordnance In December 1958, a Tallboy was found during renovation works on the Sorpe Dam, Germany. On 6 January 1959, the bomb was defused by a German and British crew of demining officers. In September 2019, a Tallboy bomb was found in the Piast Canal in northwest Poland near the town of Świnoujście and scheduled for defusing. The bomb had been dropped in the April 1945 attack on the Lützow, a German cruiser. In October 2020, the Tallboy wound up detonating during a deflagration operation, but there were no reported injuries to divers nor any damage to the port infrastructure from the underwater explosion. United States use The T-10 was an American-made version of the Tallboy modified to use standard American components. Development was started in late 1944 and plans were made to drop them on the island strongholds of the Pacific to aid in softening their defences before amphibious assaults. No bombs were used operationally since the capitulation of Japan following the atomic bombings of Hiroshima and Nagasaki negated their need. In the late 1950s the T-10 was re-designated the M-121. During the Korean War a number of T-10s were converted to the radio-guided Tarzon bomb and were dropped by Boeing B-29 Superfortresses to destroy railroad bridges and reservoir dams. After the Korean War ended and the B-29 and B-36 bombers were retired, the United States Air Force no longer had an aircraft that could drop the M-121, and the bombs were put in storage. Production of the T-10 ended in 1955. The B-36 was the last operational aircraft that could drop a fully assembled Tallboy type bomb in the conventional way. During the Vietnam War, some M-121s, minus their rear streamlined shrouds and tail fin assemblies, were shipped to Vietnam for Commando Vault missions where the warheads were incorporated into the BLU-82 weapons dropped by C-130s using radar control in order to clear