ONEOK, Inc. engages in gathering, processing, storage and transportation of natural gas. The company operates through the following segments: Natural Gas Gathering and Processing, Natural Gas Liquids and Natural Gas Pipelines. The Natural Gas Gathering and Processing segment provides nondiscretionary services to producers that include gathering and processing of natural gas produced from crude oil and natural gas wells. The Natural Gas Liquids segment owns and operates facilities that gather, fractionate, treat and distribute NGLs and store NGL products, primarily in Oklahoma, Kansas, Texas, New Mexico and the Rocky Mountain region where it provides nondiscretionary services to producers of NGLs. The Natural Gas Pipelines segment owns and operates regulated natural gas transmission pipelines and natural gas storage facilities. ONEOK was founded in 1906 and is headquartered in Tulsa, OK.