Just over half a dozen workers were injured on Friday night when a flash fire broke out at a Texas oil terminal.
According to Reuters, seven workers were injured while performing construction work at a Sunoco Logistics crude terminal in Nederland, Texas.
Three of the workers suffered minor injures and four workers were hospitalized with critical injuries, the Beaumont Enterprise said.
All seven workers are employees of L-Con Inc.
A Sunoco spokesman told Reuters that it is currently unclear if the workers were performing welding work when the fire broke out of it they were preparing to start welding work.
The spokesperson added that, as of Sunday, operations at the terminal were “pretty much near normal.”
The injured workers were constructing piping to connect new tanks at the Nederland terminal when the fire began, Reuters said.
Representatives from the U.S. Occupational Safety and Health Administration visited the site on Saturday to begin their investigation into the incident, the Beaumont Enterprise said.
Both Sunoco Logistics and L-Con are also investigating the blaze.
The fire did not affect nearby residents and no environmental impact has been reported.
In addition to crude oil activities, the Nederland terminal also provides 1 million barrels of storage and distribution services for NGLs in connection with the Mariner South pipeline project, according to Sunoco’s website.