Dan Hall’s wide-ranging professional experience spans 35 years and encompasses drilling, production and reservoir engineering in locales that include Colorado, Wyoming, South Dakota, North Dakota, New Mexico, Montana, Utah, Nevada, Pennsylvania and Kansas. In 1990, Mr. Hall founded Denver-based Energy Operating Company, Inc. Prior to that, he served as Operations Manager of The Gary-Williams Company in Denver, Colorado where he oversaw drilling and production activity in the Rocky Mountain Region, including the supervision of approximately 40 field employees at three locations and was responsible for more than 500 wells. As petroleum engineer, he was also charged with drilling and production activity for Colorado, Wyoming and Montana at Gary-Williams. From 1980 to 1982, he worked as Senior Engineer for the Denver-based Resources Investment Corporation.