Geoff Hager, CEO of Big Elk Energy Systems, is today's Forty Under 40 honoree. Geoff founded Big Elk, which has earned more than $40 million in revenue crafting custody transfer equipment, pig launchers and receivers, and mainline valve settings for interstate gas transmission pipelines.

See Geoff's complete profile, including an audio interview.

Take a look at all of the Forty Under 40 honorees.