Coal Age Magazine - For nearly 100 years, Coal Age has been the magazine that readers can trust for guidance and insight on this important industry.
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1920-1929 even by the end of the decade, in 1929 when Coal Age presented an in-depth look at the preparation plants of the Pittsburgh Coal Co., modernization still meant applying mechanization to preparation and clean- ing. J.B. Morrow, manager of preparation for the company, described the methods then being used at four mechanical prep plants. Three use the "Rheolaveur wet pro- cess for cleaning coal and one [uses the] Arms dry tables [process]. The combined annual capacity of these four plants is 9,250,000 tons." For the article, Morrow focused on the Champion No. 1 plant's original design and how it had been modernized. The factors governing the design was "1) The desirability of receiving mine-run coals of varying quali- ties and varying percentage of sizes and sep- arating them into a plus 4-in. product suitable for hand-picking and a minus 4-in product which could be prepared mechani- cally…2) The desirability of being able to mix the products after cleaning in the same rela- tive proportions as that in which they were received from the mine…3) The desirability of shipping a constant-ash product regard- less of the variation in ash in the feed product Flow sheet for Champion No. 1 prep plant, Pittsburgh Coal Co. *Coal Age, March 1929 from the individual mines…4) The desirabil- ity of erecting a type of plant in which low operating costs would be the principal con- sideration…5) The desirability of departing August 2012 100th Anniversary Special Issue www.coalage.com 57