1. a Industrial Assessment Center (IAC), College of Engineering and Mineral Resources, West Virginia University, Department of Industrial and Management Systems Engineering , P.O. Box 6070, Morgantown, WV, 26506 E-mail:
2. b Industrial Assessment Center (IAC), College of Engineering and Mineral Resources, West Virginia University, Department of Industrial and Management Systems Engineering , P.O. Box 6070, Morgantown, WV, 26506
3. c Industrial Assessment Center (IAC), College of Engineering and Mineral Resources, West Virginia University, Department of Chemical Engineering , P.O. Box 6070, Morgantown, WV, 26506