A Friday night explosion and fire at Sinclair Wyoming Refinery did not cause injuries or damage parts of the adjacent town, authorities said.

The explosion occurred shortly after 10 p.m. It was accompanied by a large fire that was limited to the refinery itself, said Sinclair Police Chief Jeff Sanders.

Sinclair’s own fire brigade extinguished the blaze. Its members have specialized training for dealing with refinery fires, Sanders said.

The explosion happened in a hydrogen unit at the refinery, which sits about seven miles east of Rawlins.

No evacuations were necessary.

“At this time, I can tell you there is no damage to residences or buildings in the town of Sinclair,” Sanders said.

A Sinclair Oil official did not respond to a phone message and email. No one answered at the Sinclair Fire Department.

The explosion drew a response from fire departments in Sinclair and Rawlins, along with medics, police and the Carbon County Sheriff’s Office. The last units did not leave the refinery until shortly after 3 a.m., according to a sheriff’s office statement.

The cause of the incident was unknown, according to the statement.

In July, two workers were injured in a fire at the refinery. They were treated and released the same day.

Earlier this year, the Star-Tribune performed an analysis of federal data and found the Sinclair facility had been cited and fined more than another other refinery in Wyoming during the preceding five years.

Contact Joshua Wolfson at 307-266-0582 or at josh.wolfson@trib.com. Visit http://trib.com/news/opinion/blogs/wolfjammies to read his blog. Follow him on Twitter @joshwolfson.

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