Yumen

Irrigation systems expanded agriculture, and Yü-men, in the early 1960s, was rapidly growing into a transport and petroleum centre, with refineries, by-product plants, and oil-well machinery plants.

[1964, Joseph Earle Spencer, “YÜ-MEN”, in Encyclopedia Britannica, volume 23, →OCLC, page 926B, column 1

After landing at Chiuchuan, we set out immediately up a macadamised highway to the oil municipality of Yumen situated up on the slopes of the Chilien Mountains in what was once known as Yumen County.

1973, Rewi Alley, “Through the Kansu Panhandle and Down the Old Silk Road”, in Eastern Horizon, volume XII, number 6, Hong Kong: Eastern Horizon Press, →ISSN, →OCLC, page 20, column 2

Yumen is in a high-altitude corner of the poor northwestern province of Gansu. A single oil field is its gushing but fragile economic base.

2008 April 17, “Many of China's 'resource' towns are dying”, in The New York Times, →ISSN, →OCLC, archived from the original on 24 May 2021, International Business