Day-to-Day Track Maintenance Part II: Switches & Crossings (1952)
Day-to-Day Track Maintenance Part II: Switches & Crossings (1952) - Documentary Movies 21 minutes. . Continuing the study of the normal 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. transportation, train, instructional
