"Some coal measure sections near Peytona, West Virginia... "; "Lyman, Benjamin Smith, 1835-1920."; "Coal mines and mining--West Virginia."; "Lyman, Benjamin Smith, 1835-1920."; "1894"; "Journal article reprint from: Proceedings of the American Philosophical Society, v.33 (1894:Nov.23)."; ""; "P3464"; "pec"; "Coal mines and mining--West Virginia."; "14256"; .