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The land at the Refuge was first occupied by Native. Americans during the Paleoindian period (7,800 years ago).

Euro-Americans established farms in the area after the 1870's.

In 1942 the U.S. Army used the land for chemical weapons production.
After the war, private companies used the land for pesticide manufacturing. Shell Oil Company has been actively involved in the clean-up.
In the 1980's a clean-up program was developed. The Rocky Mountain Arsenal National Wildlife Refuge Act (PL 102-402) in 1992 authorized the development of a National Wildlife Refuge.CountyPrey
Last Updated:
9/5/08
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