| He worked as a consultant for Chevron Corporation from 1981 to 2000 in the area of oil shale. |
| In addition to its well-preserved fossil fish, the Green River Formation is famous for its trona and oil shale. |
| Carbonaceous shale, including oil shale, occurs in beds of clayey to silty mudrock from 0.3 to 3 m thick. |
| If prices go high enough, alternative forms of energy exploration and things like oil shale can become viable. |
| It was also postulated that the slow settling of organic material from the surface produced the bituminous carbonate layers known as oil shale. |
| The biggest problem with mining oil shale comes as a result of heating oil shale rock. |
