Matrix Service Company announced the appointment of Martha Z. Carnes as new independent members of its Board of Directors. Martha Carnes was appointed to the board in July 2017 and brings to the board. Martha retired from PwC in June 2016 after a 34-year career with the firm. There, she served as an assurance partner for large, publicly traded energy companies. She held a number of leadership positions including Managing Partner of the Houston office; as Energy and Mining leader in the U.S.; and as one of PwC’s Risk Management Partners and U.S. representatives on the firm’s Global Communities Board.