ONEOK Partners, L.P. is a leading publicly traded master limited partnership in the U.S. that specializes in gathering, processing, storing, and transporting natural gas. It also owns a top-notch natural gas liquids (NGL) system connecting the Mid-Continent and Rocky Mountain regions to key market centers. ONEOK Inc., the parent company, is involved in natural gas distribution and energy services and owns 42.8 percent of ONEOK Partners.