SUI

town, Balochistan province, southern Pakistan, located northeast of Jacobabad. It rose to importance in 195051 through the discovery of one of the world's largest natural-gas deposits. Operations began in 1955 with the laying of pipelines to provide a cheap source of fuel and power for industries in Hyderabad, Karachi, and Sukkur. Lines were extended to Multan (1958), Lahore, Faisalabad (formerly Lyallpur), and Hatar (1970). Besides generating power, Sui gas is used for fertilizer production and as a basis for Pakistan's growing petrochemical industry. Pop. (1981 prelim.) 5,000.