Shale oil extraction Energy estimates that the "ex-situ" processing would be economic at sustained average world oil prices above $54 per barrel and "in-situ" processing would be economic at prices above $35 per barrel. These estimates assume a return rate of 15%. Royal Dutch Shell announced in 2006 that its Shell ICP technology would realize a profit when crude oil prices are higher than $30 per barrel ($190/m), while some technologies at full-scale production assert profitability at oil prices even lower than $20 per barrel ($130/m). To increase the efficiency of oil shale retorting and by this the viability of the shale oil
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