
The Rocky Mountain Arsenal outside Denver manufactured nerve agents and pesticides for four decades, and after a Superfund cleanup the 15,000-acre site became a National Wildlife Refuge now hosting bison, bald eagles, and one of the largest urban prairie dog colonies in the country
The Rocky Mountain Arsenal produced sarin, mustard agent, and pesticides for four decades before a $2.1 billion Superfund cleanup turned the 15,000-acre site into a National Wildlife Refuge ten miles from downtown Denver, now home to a wild bison herd, bald eagles, and one of the largest urban prairie dog colonies in North America.















