1. Research Civil Engineer, U.S. Army Engineer Research and Development Center, Waterways Experiment Station, Airfields and Pavements Branch, 3909 Halls Ferry Rd., Vicksburg, MS 39180.
2. Research Civil Engineer, U.S. Army Engineer Research and Development Center, Waterways Experiment Station, Airfields and Pavements Branch, 3909 Halls Ferry Rd., Vicksburg, MS 39180.