Continuing the study of the tasks performed by a 'permanent way gang, this film deals with the maintenance of switches, common crossings and obtuse crossings. These are the fundamental units from which all track layouts, however ...See moreContinuing the study of the tasks performed by a 'permanent way gang, this film deals with the maintenance of switches, common crossings and obtuse crossings. These are the fundamental units from which all track layouts, however complicated, are built up. Written by
natgale
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