Cray Valley named Tom Voltz as plant manager of the company’s Beaumont, TX manufacturing facility. In his new position, Mr. Voltz will be responsible for all facility operations and safety. He will report to Mohammed Dekiouk, global manufacturing technology manager.       Mr. Voltz joins Cray Valley after working for Arkema as director of global HSE processes and audits, and director of industrial safety. He has more than 15 years of chemical plant management experience. He earned a bachelor o...