. "coal trunk-line" . . "Coal Trunk-Line" . "Coal Trunk Railway" . "railway line" . "Coal Line" . "Polish Coal Trunk-Line" . ":Polish Coal Trunk-Line" . "Upper Silesia-Gdynia coal main" . . "coal main line" . "PKP rail line 131" . . . "a new inner-Polish railway" . "new inner-Polish railway" . . . . . "Polish Coal Trunk-Line" .