The Bureau of Mines has presented an Industry-Scale Oil Shale Project Report in which a 234,000 B/CD operation is designed and its cost estimated. Crushed oil shale is retorted by the Gas-Combustion retorting process. The crude shale oil is visbroken near the retorting site and pipelined from Colorado to California. The visbroken oil is cracked thermally, yielding naphtha and residuum. The cracked naphtha is split into two fractions, the light naphtha being treated with five pounds of 98% sulfuric acid per barrel. The heavy fraction is reformed with a hydrogen atmosphere over cobalt-molybdate catalyst and the reformate treated lightly with concentrated sulfuric acid. Residuum is utilized, in part, as refinery fuel and the balance is marketed as bunker-grade fuel oil.