23 Terms
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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
Scoop loading
Energy; Coal
An underground loading method by which coal is removed from the working face by a tractor unit equipped with a hydraulically operated bucket attached to the front; also called a front-end loader.
Topping cycle
Energy; Coal
A boiler produces steam to power a turbine-generator to produce electricity. The steam leaving the turbine is used in thermal applications such as space heating and/or cooling or delivered to other ...
No. 1 fuel oil
Energy; Coal
A light distillate fuel oil that has distillation temperatures of 400 degrees Fahrenheit at the 10-percent recovery point and 550 degrees Fahrenheit at the 90-percent recovery point and meets the ...
Prediscovery costs
Energy; Coal
All costs incurred in an extractive industry operation prior to the actual discovery of mineralsin commercially recoverable quantities; normally includes prospecting, acquisition, and exploration ...
Roll front
Energy; Coal
A type of uranium deposition localised as a roll or interface separating an oxidised interior from a reduced exterior. The reduced side of this interface is significantly enriched in uranium.
Test well contribution
Energy; Coal
A payment made to the owner of an adjacent or nearby tract who has drilled an exploratory well on that tract in exchange for information obtained from the drilling effort.
Nonutility generation (NUG)
Energy; Coal
Electric generation by end-users, or small power producers under the Public Utility Regulatory Policies Act, to supply electric power for industrial, commercial, andmilitary operations, or sales to ...
