Calgary, Canada-based NOVA Chemicals has promoted William Mitchell to vice president and general counsel. Mitchell succeeded Jack Mustoe, chief legal officer and corporate secretary, who retired in December 2009.

Mitchell has more than 25 years of legal experience in the chemical and pharmaceutical industries. Prior to joining NOVA Chemicals, he held several leadership roles including patent counsel for Merck; general counsel and secretary for Calgon Corporation; and vice president and general counsel for Oakwood Laboratories. Most recently, Mitchell served as a vice president in NOVA Chemicals’ legal department, and currently serves as a board member at Launchcyte.