The coker unit at Tesoro Corp.'s Wilmington refinery near Los Angeles that caught fire on Sept. 25 may have debris contaminated with asbestos, a state regulator told Bloomberg News. "It appears ...

HOUSTON (Reuters) - A deadly fire on Friday at Tesoro Corp's Anacortes, Washington, refinery was due to a catastrophic failure of a heat exchanger, sources familiar with the investigation of the ...

The lid of the 1-ton tank at the sprawling Tesoro refinery “blew off” about 1 p.m., said Inspector Gustavo Medina of the Los Angeles County Fire Department. The sulfur in the tank dissipated ...