Matrix Service Co. appointed John D. Chandler as independent members of the board of directors. The company also announced that board members Michael J. Hall and I. Edgar “Ed” Hendrix will retire from the board and not stand for re-election at the 2017 annual meeting. Hall has been on the board for 19 years and Hendrix has been on the board for 17 years. Chandler most recently served as the chief financial officer and treasurer of Magellan GP, the general partner of Magellan Midstream Partners. His career also included management jobs at Williams Cos. Inc. and Mapco Inc. He also served as a director and on the audit committee of Green Plains Holdings, general partner of Green Plains Partners, a director for Cone Midstream GP, general partner of Cone Midstream Partners and as a director of USA Compression GP, general partner of USA Compression Partners.