The second was construction of the 500-kilometer rail connection between Upper Silesia and Gdynia, called Polish Coal Trunk-Line, which served freight trains with coal.
Al doilea a fost construirea de conexiuni feroviare de 500 kilometri între Silezia Superioară și Gdynia, numit cărbune polonez Trunk-Line, care a servit trenurile de marfă cu cărbune.