Coal

Coal

Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.

Industry: Energy

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Coal

Slurry dam

Energy; Coal

A repository for the silt or culm from a preparation plant.

Ram car or shuttle ram

Energy; Coal

Underground mining equipment. A rubber-tired haulage vehicle that is unloaded through the use of a movable steel plate located at the back ofthe haulage bed.

Operable utilisation rate

Energy; Coal

Represents the use ofthe atmospheric crude oil distillation units. The rate is calculated by dividing the gross input to these units by the operable refining capacity of the units.

Radiant ceiling panels

Energy; Coal

Ceiling panels that contain electric resistance heating elements embedded within them to provide radiant heat to a room.

Small pickup truck

Energy; Coal

A pickup truck weighing under 4,500 lbs GVW.

Roof-bolting machine, or roof bolter

Energy; Coal

Underground mining equipment. Used to drill holes and place bolts to support the mine roof. Roof bolting units can be installed on a continuous mining machine.

Operated

Energy; Coal

Exercised management responsibility for the day-to-day operations of natural gas production, gathering, treating, processing, transportation, storage, and/or distribution facilities and/or a ...