"Feasibility of coal ash from West Virginia coals. "; "Selvig, W. A. (Walter Alfred), 1886-1972."; "Coal--West Virginia--Analysis.", "Coal ash.", "Combustion."; "Selvig, W. A. (Walter Alfred), 1886-1972."; "1920"; "Journal article reprint from: Webster County Report, West Virginia Geological Survey, 1920. "; ""; "P2960"; "pec"; "Coal--West Virginia--Analysis.", "Combustion.", "Coal ash."; "14256"; .