Energy
 
Amoco Production Co., Illinois
APRIL, Singapore
Commonwealth Edison, Illinois
Domtar, Montreal, Canada
Enron, Texas
FMC Chemicals, Pennsylvania
Lyco Energy Corporation, Texas
Marathon Oil, Texas
PacifiCorp, Oregon
Petroleos de Venezuela, SA, Venezuela
Phillips Petroleum, Oklahoma
PJM Interconnection, Pennsylvania
Royal Dutch/Shell, England
Shell Oil, Texas
Unocal, Texas
UOP, Illinois