Questar Corporation is an integrated natural gas company headquartered in Salt Lake City, Utah. Through subsidiaries, it engages in gas and oil exploration and production, gas gathering, processing and marketing, interstate gas transmission and storage, and retail gas distribution. Questar combines the growth opportunities of exploration and production and other non-regulated activities with the stability and strength of regulated businesses. Questar's exploration and production group is a major independent operator in the Rockies, with development plays in Pinedale, Wyoming and the Uinta Basin of Utah.