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COR Enterprises Welcome to COR Enterprises COR Enterprises and our Career Guidance Center support people with disabilities in Billings Montana and surrounding areas. Our staff takes great pride in the many services we provide. Donate Today Show Your Support Our Services Helping the Community Employment Join Our Team Our Mission To promote the dignity independence and success of persons with disabilities through quality vocational and support services so that they may fully participate in the economic and social life of the community. COR Enterprises COR was originally known as The Billings Sheltered Workshop and opened its doors in January of 1971.