PASADENA, Texas (KTRK) -- Two workers have died while cleaning a chemical tank in Pasadena, Harris County Sheriff deputies say.
Deputies responded to reports of a work incident at a chemical transportation plant on Underwood Road near West Fairmont Parkway around 1:30 a.m.
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Deputies say both workers went into the back of an 18-wheeler tank and never came out.
Investigators believe the workers may have been overcome by some kind of fumes. An investigation is underway.