dust coal
11Coal mining — Men leaving a UK colliery at the close of a shift Surface coal mining in Wyo …
12Coal torpedo — A coal torpedo. This example was prepared as a model, with a partial coal dust coating and the plug left out. It was found in Jefferson Davis office by Union General Edward Ripley when Union forces captured Richmond in April 1865. The coal… …
13Coal grade — This classification refers to coal quality and use. • Briquettes are made from compressed coal dust, with or without a binding agent such as asphalt. • Cleaned coal or prepared coal has been processed to reduce the amount of impurities… …
14dust — [[t]dʌ̱st[/t]] ♦♦♦ dusts, dusting, dusted 1) N UNCOUNT Dust is very small dry particles of earth or sand. Tanks raise huge trails of dust when they move... He reversed into the stockade in a cloud of dust. 2) N UNCOUNT Dust is the very small… …
15dust — 1 /dVst/ noun 1 (U) dry powder consisting of extremely small bits of earth or sand: The truck drove off in a cloud of dust. | the heat and dust of an Indian town 2 (U) dry powder consisting of extremely small bits of dirt which you find in… …
16coal — noun 1 black mineral ADJECTIVE ▪ clean, smokeless ▪ hard ▪ soft ▪ brown ▪ bituminous …
17Coal seam fire — A coal seam fire near Denniston, New Zealand A coal seam fire or mine fire is the underground smouldering of a coal deposit, often in a coal mine. Such fires have economic, social and ecological impacts. They are often started by lightning, grass …
18Coal breaker — A coal breaking plant, depicted on a postcard in 1907. A coal breaker was a coal processing plant which broke coal into various useful sizes. Coal breakers also removed impurities from the coal (typically slate) and deposited them into a culm… …
19coal — coalless, adj. /kohl/, n. 1. a black or dark brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel. Cf. anthracite, bituminous coal, lignite. 2. a piece of glowing, charred, or burned wood or other… …
20coal utilization — Introduction combustion of coal or its conversion into useful solid, gaseous, and liquid products. By far the most important use of coal is in combustion, mainly to provide heat to the boilers of electric power plants. Metallurgical coke… …
