One man was dead after a gas pipeline in Cheyenne, Wyo., caught fire, sending flames shooting hundreds of feet into the air, according to FOX News affiliate KDVR in Denver.

The blast occurred after a worker driving a bulldozer crashed into the gas pipeline, causing the massive explosion. The driver died in the fire.

Initial reports said up to 14 people were missing but later all the workers were accounted for.

Flames shot 200 to 500 feet into the air before it was contained and eventually extinguished after the gas was shut off.

A person who answered the telephone for Laramie County firefighters said all were responding to the emergency late Saturday morning.

Flames could be seen from the Cheyenne Fire Department's station some three miles away, said Chief James Martin, whose department was not part of the response. Martin said he believed the blaze was a pipeline fire.

Sgt. Stephen Townsend of the Wyoming Highway Patrol said the fire was about two miles north of the Wyoming-Colorado border, but he did not have a more specific location. The fire was several miles south of Interstate 80 and did not disrupt traffic there, Townsend said. He said he had no reports of death of injury related to the fire.

Brian Martin, assistant managing editor of the Wyoming Tribune-Eagle in Cheyenne, said he could see the flames from his house several miles away. He estimated the flames were 300 feet high, described them as bright orange and said thin, gray smoke was evident.

Crews from F.E. Warren Air Force Base in Cheyenne responded, as did firefighters from Larimer County, Colo.

The Associated Press contributed to this report.