Questar Pipeline was created in 1928.
Questar Corporation was created in 1950.
Questar Entertainment was created in 1985.
Questar Corporation - gas company - was created in 1928.
The Pipeline was created in 1993.
Transitgas Pipeline was created in 1974.
Super Pipeline was created in 1983.
Gazela Pipeline was created in 2011.
Transalpine Pipeline was created in 1967.
Sumed pipeline was created in 1977.
Keystone Pipeline was created in 2010.
Vector Pipeline was created in 2000.
Ruby Pipeline was created in 2010.