1. Westholow Technology Center, Equilon Enterprises LLC, P.O. Box 1380, Houston, Texas 77251-1380
2. Wyoming Analytical Laboratories, 605 South Adams, Laramie, Wyoming 82070
3. Department of Chemical and Petroleum Engineering, The University of Calgary, Calgary, Alberta, Canada T2N 1N4
4. 12 Partners Road, Wappingers Falls, New York 12590