Invista Specialty Intermediates: Nadine deVries was named business director, responsible for the North American DBE business. She joined DuPont in 1992. Melinda Burn, Ph.D, was promoted to product and marketing manager after joining DuPont in 1993. Ms. Burn will lead efforts to identify and nurture product development. Kath-leen O’Keefe was named regulatory compliance manager. She most recently served as global product stewardship network leader at DuPont. Mark Myers was named senior account man...