The ‘earthquake bomb’ explosion of WWII after more than 70 years
4 hours ago
The largest WWII bomb ever found in Poland exploded under water during an attempt to neutralize it after seven decades.
Navy deminers in the country were trying to defuse the Tallboy bomb, about 5.4 tons, when the explosion occurred in a navigation channel in the northwest of the country.
Tallboy, also known as earthquake bomb, for its ability to cause a small earthquake, was launched by British Air Force in April 1945 during an attack on a German destroyer.
For safety reasons, the option was not for the traditional method of detonation – the most often, but also the most violent, since the bomb was six meters long and 2.4 tons of explosives, equivalent to 3.6 tons of dynamite.
Instead, deminers bet on the deflagration procedure, which consists of combustion of the explosive charge at a temperature below the detonation threshold.
Finally, “the deflagration process turned into detonation,” said the spokesman for the 8th Polish coastal defense flotilla, Grzegorz Lewandowski, but “without risk to people who participated directly in the operation”.
The bomb was 12 meters deep under the canal waters, close to important houses and infrastructure, which led to the evacuation of 750 people.
In total, 12 Tallboys were launched by the British Royal Air Force (RAF) against the German destroyer Lützow, including one that did not explode at the time.
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