Airgas Mid South, a division of Airgas, is one of the largest manufacturers and suppliers of industrial, medical and specialty gases and related equipment and services in the Southern United States. Its broad portfolio consists of specialty, bulk, medical, welding and refrigerant gases. Airgas Mid South serves customers from more than 50 locations in Oklahoma, Arkansas, Kansas, north Texas, Missouri, northern Louisiana, western Tennessee and Mississippi, including one in Tulsa, Okla. Through internal growth and more than 320 acquisitions, Airgas has built a national packaged gas distribution network that includes more than 900 branch locations, cylinder fill plants, production facilities, specialty gas laboratories and regional distribution centers. Founded in 1982, Airgas maintains its headquarters in Radnor, Pa.