Xigu District
Xigu District () is one of 5 districts of the prefecture-level city of Lanzhou, the capital of Gansu Province, Northwest China. It is the westernmost part of the city of Lanzhou proper. Until 1952, Xigu was part of Gaolan County as a township and in 1953 it was established as the fifth district level division of Lanzhou. During this period, as part of China's first five-year plan, the petrochemical industry was developed in the area. Administrative divisions. Xigu is divided in 8 subdistricts 5 towns and 1 township (which contain 40 villages in total) and (which  are divided in 70 communities). Economy. Xigu District is highly industrialized, and most of Lanzhou's heavy industry is located in the district, including PetroChina's Lanzhou Petrochemical complex, an aluminium smelting plant, power plants, and textile industry. It was also the site of a nuclear enrichment factory, completed in 1958, which provided the material for China's first atomic bomb. The Bapanxia Dam on the Yellow River is located within the district, at .