The Billings Phillips 66 refinery is undergoing a complete shut down as it ramps up for major maintenance and improvements that include adding a process to enable it to process more heavy crude oil.

More coverage of Billings and Montana: <a href="https://www.ktvq.com">https://www.ktvq.com</a> ...

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Valero Energy Corp. took a $1.1 billion writedown on its California oil refineries, casting doubt on the company’s future as a fuelmaker in the most-populous US state.

Phillips 66 said on Friday that there was a fire at its 60,000-barrel-per-day Billings, Montana, refinery which resulted in visible smoke.

Par Pacific Holdings Inc. has concluded its acquisition of Exxon Mobil Corp.’s refinery in Billings city in Montana state, including logistics infrastructure from the associated ExxonMobil ...

The Billings, MT refinery is a 63,000 barrel per day (bpd) high-conversion, complex facility that processes low-cost Western Canadian and regional Rocky Mountain crude oil.