ðɪs ˌɔːɹɡɐnəzˈeɪʃən wʌz sˈɛntɹəl tʊ ˈɔːl ɹˈoʊlɪŋ stˈɑːk ˌɑːpɚɹˈeɪʃənz wɛn ðɪ ˈoʊnli mˈoʊdz ʌv tɹˈækʃən wɜː stˈiːm lˌoʊkəmˈoʊɾɪvz ænd dˈiːzəl ᵻlˈɛktɹɪk lˌoʊkəmˈoʊɾɪvz.
This organisation was central to all rolling stock operations when the only modes of traction were Steam Locomotives and Diesel Electric Locomotives.