Four workers were killed and one was injured Saturday during a hazardous chemical leak at a DuPont industrial plant in suburban Houston, CNN reported quoting company officials.
The chemical, methyl mercaptan, began leaking from a valve around 4 a.m. in a unit at the plant in La Porte, about 20 miles east of Houston. Plant officials said the release was contained by 6 a.m.
Methyl mercaptan was used at the plant to create crop-protection products such as insecticides and fungicides. The cause of the leak was not immediately known.