Shell and third-party providers did not initially detect elevated levels of chemical emissions from the overnight fire.
It is not immediately clear what caused the fire or how long crews expect firefighting operations to continue.
Crews continue fighting blaze sparked by hydrogen and gas leak late Monday night ...
Shell said Tuesday morning that it has put out an overnight fire that broke out at one of the processing units at its 250,000 b/d Norco refinery in St. Charles Parish, Louisiana.
15don MSN
'The house was shaking': Residents, environmentalists concerned after Shell Norco refinery fire
St. Charles Parish gave crews the all-clear after a fire at Shell's Norco refinery. A local environmental group questions the ...
No shelter-in-place were ordered for residents near the St. Charles Parish refinery after the fire and explosion.
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