Petrol

Petrol

a naturally occurring, flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights and other liquid organic compounds, that are found in geologic formations beneath the Earth's surface. A fossil fuel, it is formed when large quantities of dead organisms, usually zooplankton and algae, are buried underneath sedimentary rock and undergo intense heat and pressure.

Industry: Energy

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Petrol

R-value

Energy; Coal

A measure of a material's resistance to heat flow in units of Fahrenheit degrees x hours x square feet per Btu.The higher the R-value of a material, the greater its insulating capability. The R-value ...

Sludge

Energy; Coal

A dense, slushy, liquid-to-semifluid product that accumulates as an end result of an industrial or technological process designed to purify a substance. Industrial sludges are produced from the ...

Loading machine

Energy; Coal

Underground mining equipment. Used in conventional mining to scoop broken coal from the working area and load it into a shuttle car, which hauls the coal to mine cars or conveyors for delivery to the ...

Operable refineries

Energy; Coal

Refineries that were in one of the following three categories at the beginning of a given year in operation; not in operation and not under active repair, but capable of being placed into operation ...

Rack sales

Energy; Coal

Wholesale truck load sales or smaller of gasoline where title transfers at a terminal.

Longwall mining machine

Energy; Coal

Underground mining equipment. Used to shears coal from a long straight coal face (upto about 700 feet) by working back and forth across the face under a movable, hydraulic-jack roof-support system. ...