ISCOR Steel Railzingenye yezihluthulelo zesistimu yesimanje yezokuthutha, futhi ukubaluleka kwezinsimbi zensimbi njengesisekelo sokuhamba ngomzila wesitimela kuyabonakala. Nakuba kuwumzila wesitimela obonakala ulula, umphumela wokungabikho kwawo - ukushayisana kwezimoto, uzoba nomthelela omkhulu empilweni. Ngakho-ke, ukukhiqizwa, ukuhlolwa nokugcinwa kwezitimela kudinga ukunakwa okukhulu ukuze kuqinisekiswe ukusebenza kahle kwalo lonke uhlelo lwesitimela.