In newly filed lawsuits, multiple employees and contractors of Shell USA Inc. and Shell Chemical LP say they sustained injuries and were exposed to harmful hydrocarbons as they ran for their lives during a chemical plant fire earlier this month in Deer Park, Texas.

Houston-based law firm Abraham, Watkins, Nichols, Agosto, Aziz & Stogner managing partner Benny Agosto Jr., attorney Ben Agosto III and attorney Barney Dill filed suit Thursday in a Harris County district court.