21. The center also has the system's work trains , including a diesel locomotive that can fetch broken trains. 22. Others simply undercut the ballast, and allow for a work train to come through to dump fresh ballast. 23. Between 1949 and 1951, renovation of the bridge was carried out by the work train ! 417. 24. H 199 was used to haul the work trains that removed the track between Cross Creek and Summit. 25. It was used for snow removal, work trains and functioned as a back-up replacement for the battery locomotives. 26. A narrow gauge railway operating works trains was used in the construction of the standard gauge British Section. 27. Works trains began to run on the railway on and on the line was brought into permanent operation.28. This enabled the use of work trains to haul up materials that were used to line Summit Tunnel. 29. The purpose of the restoration was to serve work trains for the Dyre Avenue Line signal modernization project. 30. Work trains on the Underground employ separate locomotives, some of which are dual battery / live rail powered.
