Barrel (unit) continued to use the same size barrels. In the worldwide oil industry, an oil barrel is defined as 42 US gallons, which is about litres or 35 imperial gallons. Oil companies that are listed on American stock exchanges typically report their production in terms of volume and use the units of bbl, Mbbl (one thousand barrels), or MMbbl (one million barrels) and occasionally for widest comprehensive statistics the Gbbl (or sometimes Gbl) denoting a billion. There is a conflict concerning the units for oil barrels (see ). For all other physical quantities, according to the International System of Units, the
Barrel bombs in Palestine and Israel Barrel bombs in Palestine and Israel Barrel bombs were used in Palestine and Israel during 1947–48. They were first used by militant Zionist groups in Palestine against the British. They were later used by Jews against Arabs, and also by Arabs against Jewish targets. The barrel bombs had multiple designs, including oil barrels rolled on attached truck tires, to unguided improvised bombs dropped from planes. Targets included crowds on the streets, cafes, police buildings, schools and homes. The barrel bombs were widely reported in the press and described by police as "a brand new method". Prior to the establishment of