All Sheila Mae Dobbins wants is an apology. In 2014, an industrial facility producing wood pellets opened so close to her house in Gloster, Mississippi, that she could overhear conversations between managers and staffers as they worked and smell the fumes the plant pumped into the air. Dobbins, a 59-year-old mother of two, relies on an oxygen tank to breathe, as do her sister and her brother-in-law, who also live in the town. Her husband Neal depended on an oxygen tank as well, but...