Natural gas spewed “uncontrolled” from a well off the Louisiana coast Tuesday after a blowout followed a failed attempt by a drilling rig to expand natural gas drilling in the Gulf of Mexico.

Though no injuries or fires have yet been reported, the rupture forced the evacuation of 47 rig workers.

Inspectors flying over the site “saw a light sheen covering an area about a half-mile by 50ft,” the federal Bureau of Safety and Environmental Enforcement (BSEE) reports.

According to Jefferson Parish Council Chairman Chris Roberts, the exploded well is estimated to be about 10 miles southwest of Grand Isle, Louisiana, and there are reports of “a gas cloud in the vicinity,” reports the Times-Picayune.

“We are monitoring it because of its proximity to Grand Isle and because if there is a natural gas cloud that continues to flow then you run the risk of an explosion if there is ignition,” Roberts said.

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