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The Irgun bombed the Haifa district police headquarters on September 29, 1947.[1][2][3][4] The attack killed ten[1] or twelve[2] people, including civilians and British and Arab policemen, in addition to injuring 53[1] or 54 others.[2]
The barrel bomb, which was used in this attack, was an innovation of Amichai Paglin.[2] It was used extensively in the 1948 Palestine War.[5]: 57–65
Weaponry remained a preoccupation of Paglin's throughout the period of the insurgency, and it was in this area that he really proved his worth to the Irgun. As well as commanding multiple arms seizures, Paglin also focused intently on the home production of weaponry and explosives, displaying considerable innovation in their design and manufacture. Among the explosives he developed were contact- mines for trains, lorry bombs and remote- controlled heavy mortars, which the British dubbed V3s (after the V1 and V2 German mortars) and which featured extensively in the sabotage and bombing operations of the Irgun after the summer of 1945. Another innovation was the 'barrel- bomb', a barrel on wheels which was catapulted from the back of an armoured car on 29 September 1947, severely damaging the central police station in Haifa, killing 12 and injuring 54.