1. Professor and Director, Wood Science and Technology Center, Faculty of Forestry and Environmental Management, Univ. of New Brunswick, P.O. Box 44555, Fredericton, New Brunswick, Canada E3B 6C2 (corresponding author).
2. Design Engineer, OWL Distribution Inc., P.O. Box 937, 220 Universal Rd., Woodstock, Ontario, Canada N4S 8A3.