Cooper bombs

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]