EXCO Resources, an oil and natural gas company, has appointed Richard Burnett as chief accounting officer, effective as of March 10.<br /><br />Burnett has served as EXCO's vice president of special projects since he joined the company in November 2013.<br /><br />Prior to Burnett's appointment, Mark Mulhern served as EXCO's interim chief accounting officer. Mulhern will continue to serve as EXCO's executive vice president and chief financial officer.