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Subsidiaries of ONEOK Inc
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ONEOK Transmission Company, L.L.C.
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Midwestern Gas Transmission Co
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ONEOK Hydrocarbon Holdings LLC
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Overland Pass Pipeline Company LLC
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Crestone Bighorn LLC
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Oklahoma Natural Energy Services Co
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ONEOK ILP GP LLC
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ONEOK Energy Services Canada Ltd
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Lost Creek Gathering Company, L.L.C.
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OkTex Pipeline Company, L.L.C.
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Kansas Gas Marketing Company
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Bear Paw Processing Co (Canada) Ltd
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Viking Gas Transmission Co
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ONEOK MB I, L.P.
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Sycamore Gas System (general partnership)
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Crestone Powder River LLC
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ONEOK NGL Gathering LLC
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Bear Paw Investments LLC
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ONEOK Energy Services Co LP
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Border Minnesota Pipeline LLC
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ONEOK Arbuckle Land Company
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Black Mesa Technologies Inc
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ONEOK Services Co
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Mercado Gas Services Inc
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ONEOK Mont Belvieu Storage Co LLC
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Mont Belvieu I Fractionation Facility
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Northern Border Pipeline Co (general partnership)
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ONEOK Overland Pass Holdings, L.L.C.
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Bear Paw Energy, LLC
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ONEOK Field Services Holdings LLC
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Black Mesa Pipeline Inc
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ONEOK Gas Gathering, L.L.C.
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Border Midstream Services, Ltd
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ONEOK Hydrocarbon, L.L.C.
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ONEOK Texas Resources Inc
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NBP Services, LLC
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Guardian Pipeline, L.L.C.
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Chisholm Pipeline Company
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ONEOK Kansas Co
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ONEOK Leasing Company
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ONEOK Gas Storage, L.L.C.
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ONEOK Texas Gas Storage LLC
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Midwestern Gas Marketing Company
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ONEOK Hydrocarbon GP, L.L.C.
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ONEOK WesTex Transmission LLC
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ONEOK NB Co
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ONEOK Energy Marketing Company
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Fort Union Gas Gathering, L.L.C.
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Mid Continent Market Center, L.L.C.
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ONEOK Kansas Properties, L.L.C.
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ONEOK Parking Co LLC
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ONEOK Underground Storage Co LLC
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Border Viking Co
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ONEOK Hydrocarbon Southwest LLC
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Potato Hills Gas Gathering System
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Crestone Gathering Services, L.L.C.
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ONEOK Bushton Processing Inc
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ONEOK Energy Services Co II
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ONEOK Arbuckle Pipeline LLC
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Black Mesa Pipeline Operations, L.L.C.
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ONEOK Propane Company
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Crestone Energy Ventures LLC
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ONEOK Midstream Gas Supply, L.L.C.
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Venice Energy Services Co LLC
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Crestone Wind River LLC
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ONEOK North System LLC
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ONEOK Energy Services Holdings LLC
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Brown Bear Enterprises, LLC
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Black Mesa Holdings, Inc
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ONEOK Field Services Co LLC
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Black Mesa Technologies Services, LLC
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ONEOK Gas Transportation, L.L.C.
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ONEOK Partners GP LLC
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Oneok Partners, L.P.
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ONEOK NGL Pipeline, L.L.C.
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Heartland Pipeline Co (general partnership)
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China Pipeline Holdings Ltd
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ONEOK Gas Storage Holdings, L.L.C.
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ONEOK Pipeline Holdings LLC
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Border Midwestern Co
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ONEOK Hydrocarbon LP
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ONEOK VESCO Holdings LLC
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ONEOK PB Co LLC
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Northern Border Pipeline Corporation
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ONEOK Partners Intermediate Partnership
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Bighorn Gas Gathering, L.L.C.
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Chisholm Pipeline Holdings, L.L.C.
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