The group’s principal activities include gathering, compressing, treating, processing, transporting, selling, and fractionating natural gas. The group operates through two geographical segments namely Panhandle and Southeast Texas and Louisiana. In December 1, 2005, the group acquired ONEOK Texas Field Services, L.P. The group operates from the United States. Of the total revenue in the year 2006, Panhandle accounted for 104.5 and Southeast Texas and Louisiana $19.4 (millions).