No injuries were reported after a Wednesday afternoon fire at the HollyFrontier Corporation-owned refinery in Cheyenne.
According to company investor relations representative Julia Heidenreich, the fire happened just after noon following a leak in the refinery's delayed coker unit.
"There was an ignition and a fire which our highly trained fire brigade and operators extinguished," she said.
The fire was contained and the unit has since been isolated.
Heidenreich said there will undoubtedly be "ripple effects" of the fire, but the company has yet to determine how the incident will affect ongoing operations.
"It's too early to say," she said. "We're still assessing the situation."