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 and widely available. Paglin's bomb design consisted of an oil barrel with tires mounted on the ends allowing it to roll. It was filled with 500 pounds of explosives. The bomb was hoisted onto the top of a lorry under a canvas tarp to keep it hidden. The height of the lorry was higher than the top of the fence surrounding the police station. A cord inside the lorry released the barrel which sent it down a short ramp, also mounted on the lorry roof, launching it over the fence onto the police grounds. Momentum carried the barrel bomb towards