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THE SUBBITUMINOUS COALS OF WASHINGTON
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benzine bituminous coal boiler bottom briquets brown coal Btu per cubic Bureau of Mines capacity carbon dioxide carbon monoxide catalyst catch-pot char chemical coal hydrogenation coking coal combustion cooled cost County Cowlitz Counties cresol cubic feet cubic foot developed diameter distillation dust electric Engineering feet per hour filter flue fuel bed furnace gases gasification of coal gasification processes gasoline Germany heating value hopper hydro hydrogen inch increase industrial installations King County Leuna lignite liquid fuels liquid-phase low-temperature carbonization Lurgi Lurgi-Spülgas middle oil mixture moisture natural gas obtained operation oven oxygen paraffin petroleum phenols pilot plant pitch pounds preheater pressure producer gas production pulverized reaction residue retort solvent steam-electric superheated steam synthesis gas Temperature Carbonization Tenino-Mendota Tetralin tion tons tubes U. S. Bureau unit Utah valve vapor-phase volatile Washington coal Washington subbituminous coal water-gas Winkler yield Zeitz zone