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British 20 pound bomb used in World War I From Wikipedia, the free encyclopedia
The Cooper bomb was a British 20 pound bomb used extensively in World War I, it was the first high explosive bomb to be adapted by the Royal Flying Corps.[1]
The bomb was 24 lb (11 kg) in weight, of which 20 lb (9 kg) was the bomb casing and 4 lb (1.8 kg) was an explosive charge of Amatol.[2] The main body, being 5⁄16 inch (8 mm) thick, was made of cast iron, steel or semisteel[3] and the after body is made of wood and the fins sheet steel.[4]
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