Science / Geology / Oil Shale: A dark-colored shale containing an unusual amount of solid organic material known as kerogen. This shale can be crushed and heated to liberate gaseous and liquid hydrocarbons. At present the expenditure required to process oil shale into a fuel makes this effort marginally profitable or unprofitable.
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Science / Geology / Shale: a clastic sedimentary rock that is made up of clay-size (less then 1/256 millimeter in diameter) weathering debris. It typically breaks into thin flat pieces. Picture of Shale. MORE
Entertainment / Bowling / Rode The Oil Line: A method of lane play where there is an oil line/crown into the pocket and the player keeps the ball on the oil line into the pocket; can result it high scores. See also bumped the oil line. MORE
Business / Agriculture / Revised Universal Soil Loss Equation (RUSLE): Revisions to the universal soil loss equation implemented in the mid 1990s to more accurately predict soil erosion caused by water. It includes the same factors as the earlier formula: climate, soils, MORE