WOODS CROSS, Utah - Federal investigators released dramatic surveillance video on Tuesday, showing the powerful blast at the Silver Eagle Refinery in Woods Cross earlier this month, an explosion they now say could have been prevented. The Chemical Safety Board said a safety program at the plant had serious deficiencies and pipes did not meet minimum thickness standards. On November 4, one of the pipes failed, triggering the massive explosion that damaged at least 100 homes and sent four refinery workers flying to the ground.

Investigators seeing the video said it was a miracle that no one was killed in the explosion.

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"It is probably the most significant off-site consequences we've seen in terms of the damage to the homes and the interruption to people's lives and the serious potential that it could have been if it turned out just a little bit differently," said Don Holmstrom from the Federal Chemical Safety Board. "It's a miracle that this didn't result in much more serious consequences."

Chemical Safety Board investigators are expected to be in town for another week and they do not have the power to fine or regulate the refinery.

There has been no word yet on when the refinery will reopen.

FOX 13's Sandy Riesgraf reports.

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