Glenn Dorsch, P.E., is the vice president of engineering and Kent Keeran is a senior engineer at Vaughan Company Inc., 364 Monte Elma Road, Montesano, WA 98563, 360-249-4042, Fax: 360-249-6155.ANSYS, Inc., Southpointe, 275 Technology Drive, Canonsburg, PA 15317, 724-746-3304, Fax: 724-514-9494, ansysinfo@ansys.com.