The company hired by Norfolk Southern has already persuaded 340 residents to sign agreements that reportedly waive their legal rights in the aftermath of Ohio's train crash. The Center for Toxicology and Environmental Health (CTEH), a private contractor hired by Norfolk Southern to test water, soil, and air quality in East Palestine, Ohio, has a history of minimizing the effects of environmental disasters to satisfy its corporate employers, according to critics. While the Arkansas-based firm provides consulting services to various industries, it is known for performing toxicology monitoring for the oil and gas industry following health and safety incidents. After...