High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Haifa Oil Refinery massacre refers to an incident that took place on 30 December 1947. After operatives of the Zionist paramilitary organisation, the Irgun, threw a number of grenades at a crowd of 100 Arab day-labourers who had gathered outside the main gate of the British-owned Haifa Oil refinery looking for work, six people were killed and 42 wounded. Minutes following this attack, Arab refinery workers and others began attacking the Jewish refinery workers, resulting in 39 deaths and 49 injuries, before British army and Palestine Police units arrived to put an end to the violence. Haganah later retaliated by attacking two nearby Arab villages where the dead included women and children.