The Green River Basin also has large oil shale and natural gas reserves, which remain virtually untouched due to the high cost of extracting the oil from the hard shale formations.
The Green River Basin also has large oil shale and natural gas reserves. Large oil shale remain virtually untouched due to the high cost of extracting the oil from the hard shale formations. Natural gas reserves remain virtually untouched due to the high cost of extracting the oil from the hard shale formations.