The following companies are subsidiares of Southwest Gas: CVTech Holding Inc., Canyon Pipeline Construction Inc., Canyon Special Projects LLC, Canyon Traffic Control LLC, Carson Water Company, Centuri Canada Division Inc., Centuri Group Inc., Centuri Oil & Gas Group LLC, Centuri Power Group LLC, Centuri Services Group LLC, Centuri U.S. Division Inc., Dominion Energy Overthrust Pipeline LLC, Dominion Energy Questar Pipeline LLC, Dominion Energy Questar Pipeline Services Inc., Drum Parent LLC, Electric T&D Division LLC, Electric T&D Holdings LLC, Great Basin Gas Transmission Company, Intellichoice Energy LLC, Intellichoice Energy of California LLC, Linetec Services LLC, Meritus Electric T&D Division LLC, Meritus Oil & Gas Division LLC, Meritus Services Division LLC, MountainWest Pipelines Holding Company, NAPEC Inc., NPL Canada Ltd., NPL Construction Co., NPL East LLC, NPL Great Lakes LLC, NPL Mid-America LLC, NPL West LLC, National Barricade LLC, National Powerline LLC, Neuco Equipment LLC, New England Utility Constructors Inc., Oil & Gas Division LLC, QPC Holding Company LLC, Questar Energy Services Inc., Questar Field Services LLC, Questar Southern Trails Pipeline Company, Questar White River Hub LLC, Riggs Distler & Company Inc., Services Division LLC, Shelby Mechanical LLC, Shelby Plumbing LLC, Southwest Administrators Inc., Southwest Gas Corporation, Southwest Gas Holdings Inc., Southwest Gas Transmission Company, Southwest Gas Utility Group Inc., The Southwest Companies, Utility Financial Corp., VRO Construction Partners 1 LLC, W.S. Nicholls Construction Inc., W.S. Nicholls Western Construction Ltd., White River Hub LLC, and and Utility Financial Corp..
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