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Coal refuse, also known as coal waste, rock, slag, coal tailings, waste material, rock bank, culm, boney, or gob, is the material left over from coal mining, usually as tailings piles or spoil tips. For every tonne of hard coal generated by mining, 400 kg (880 lb) of waste material remains, which includes some lost coal that is partially ...
Coal seams can be set on fire by spontaneous combustion or contact with a mine fire or surface fire. Lightning strikes are an important source of ignition. The coal continues to burn slowly back into the seam until oxygen (air) can no longer reach the flame front. A grass fire in a coal area can set dozens of coal seams on fire.
An anthracite pile in Trevorton, Pennsylvania. Anthracite derives from the Greek anthrakítēs (ἀνθρακίτης), literally "coal-like". [9] Other terms which refer to anthracite are black coal, hard coal, stone coal, [10] [11] dark coal, coffee coal, blind coal (in Scotland), [7] Kilkenny coal (in Ireland), [10] crow coal or craw coal, and black diamond.
Coal handling is part of the larger field of bulk material handling, and is a complex and vital part of the CPP. Stockpiles provide surge capacity to various parts of the CPP. ROM coal is delivered with large variations in production rate of tonnes per hour (tph). A ROM stockpile is used to allow the washplant to be fed coal at lower, constant ...
Coal gas is a flammable gaseous fuel made from coal and supplied to the user via a piped distribution system. It is produced when coal is heated strongly in the absence of air. Town gas is a more general term referring to manufactured gaseous fuels produced for sale to consumers and municipalities. [1]
The upper seams of coal are removed with spoils placed in an adjacent valley." "Step 3. Draglines excavate lower layers of coal with spoils placed in spoil piles." "Step 4. Regrading begins as coal excavation continues." "Step 5. Once coal removal is completed, final regrading takes place and the area is revegetated."
The Kenneth C. Coleman Generating Station was a coal-fired power plant owned and operated by Big Rivers ... Coal Consumption: Coal Source: Number of Employees ...
The Upper Silesian Coal Basin (USCB; Polish: Górnośląskie Zagłębie Węglowe, GZW, Czech: Hornoslezská uhelná pánev) is a coal basin in Silesia, in Poland and the Czech Republic. [ 1 ] The Basin also contains a number of other minable resources, such as methane, cadmium, lead, silver and zinc.