Oil shale deposits range from small presently economically unrecoverable to large potentially recoverable resources. The amount of economically recoverable oil shale is unknown. Estimated technically recoverable shale oil resources total 335 to 345 billion barrels. Total recoverable reserves were more than 500 million tons. Egypt is estimated to hold initial recoverable liquid reserves. None of the three major bills under consideration lower recoverable damages in tort suits. The Alberta Energy Regulator estimates that the province has of ultimately recoverable bitumen resources. Kazakhstan holds about of proven recoverable oil reserves and of gas. Kuwait has about of recoverable oil reserves. Further, reserves are resources that are "economically" recoverable under "existing conditions". West Qurna is believed to hold of recoverable reserves. Since extraction technologies develop continuously, planners can only estimate the amount of recoverable kerogen. These figures indicate that 83% of Egypt's recoverable oil reserves have been depleted. Recoverable oil reserves have jumped dramatically recently. It contains vast quantities of recoverable natural gas.