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COMING UP: Don't miss Xfinity Monday Live with special guest former Bronco Joel Dreessen. Watch it on CBS4 at 6:30 p.m. or head to the Tavern Downtown to see it live!

Shell Frontier Oil and Gas Inc.

(credit: CBS)

BLM OKs 2 More Colorado Oil Shale Research Leases

A baking soda company and an energy industry giant are the latest companies that have received approval to research how to economically extract oil from oil shale on federal land.

08/31/2012