It’s relatively common along the U.S. Gulf Coast to use underground salt domes to store crude oil, natural gas, mixed NGLs and so-called NGL “purity products” like ethane and propane. There are also a handful of salt cavern storage facilities in Kansas, Michigan, New York and Virginia. But in the Rockies and the West Coast states they’re rare as hen’s teeth, one of the few examples being Sawtooth Caverns, a one-of-a-kind facility in Utah that not only stores propane and butanes but also gasoline and diesel. In today’s RBN blog, we discuss Sawtooth Caverns and its increasing role in the sprawling region’s NGL and refined products markets.