160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! COMMERCE CITY, Colo. – After an absence of more than a century, wild bison were returned to Colorado’s Front Range on Saturday in full view of Denver’s skyline. Sixteen buffalo from the National Bison Range in northwestern Montana were released in an enclosed 1,400-acre section of a wildlife refuge that formerly was the Rocky Mountain Arsenal, where nerve gas and other chemical weapons were manufactured. “The release went very smoothly. We would say this was a tremendous success,” said Matt Kales, spokesman for the U.S. Fish and Wildlife Service. He said the animals were released in an area that had never been used for the manufacture of weapons. The 17,000-acre arsenal is being transformed into the Rocky Mountain Arsenal National Wildlife Refuge.