Adverse natural envimnment also sees persistent efforts made by constructors on Qinghai -Tibot Railway Line. The Qinghai -Tibet Plateau dubbed as world roof heard the first locomotive siren on March 23r. No. l083 DF4 diesel locomotive, made by Dalian Factory, rolled slowly to An Duo Constructon Base at the altitude of 4704 meters above sea level. This has been the first locomotive running in Tibet. Qinghai-Tibet Railway. Constructon Leader Team of M0R sent a telegraph to Qinghai-Tibet Railway Corporation on March 26th congratulating on, the arrival of this first locomotive carried in major pieces by lorries from Xiushuihe Station to An Duo on March l8th and its immediate operation after assembly on March 23rd.
