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Chemical leak at DuPont facility in Texas leaves four dead

A chemical leak at a Houston-area industrial site left four people dead and a fifth hospitalized early Saturday, according to DuPont. An unknown quantity of methyl mercaptan, which DuPont says is used to odorize natural gas, leaked into the facility in La Porte, Texas, around 4 a.m., plant manager Randall Clements said in a statement. ------------ For the record: An earlier version of this post referred to the DuPont company as DuPont Chemical. ------------ Some of the employees who died may have been responding to the leak, according to DuPont's statement. The fifth employee is being held for observation, according to the statement, which did not describe her condition....