American Fuels ...

acid ammonia ammonium sulphate amount anthracite benzol binder bituminous coal blast furnace boiler briquets burned burner by-product coke carbocoal carbon carbon dioxide carbon monoxide cent charge coal tar coke oven commercial condensation considerable constituents contains cost County crushed cubic foot developed distillation district domestic dryer dust economic efficiency electric firing flue fuel gas producer gases gasified grinding heating value hydrocarbons hydrogen increase industry installation iron Koppers light oil lignite low temperature manufacture material method mill mines moisture naphthalene nitrogen obtained operation oxygen particles pass peat percentage pipe pitch plant possible pound practice pressure producer gas products of combustion pulverized coal pyrite recovery retort rotary sample screen semi-coke semibituminous specific gravity steam steel storage subbituminous sulphate sulphur supply Table tank tion tons tube tuyeres utilized vapor volatile matter washer washing weight yield