Questar Corporation was created as an investor-owned, integrated energy holding company in 1984. Its origins date to the 1922 discovery of natural gas in southwestern Wyoming by a predecessor exploration and production company. Construction was completed in 1929 on a pipeline to transport a developing natural gas supply to Utah markets. In 1935 various holdings were consolidated under the name Mountain Fuel Supply Company, which was the parent company until 1984. Questar is a natural gas-focused energy company with four principal businesses: gas and oil exploration, development and production; gas gathering and processing; interstate gas transportation and storage; and retail gas distribution.