Insurance. Colorado Premium fixed for miners. Ners, July 1, 1915 p.4. List of Insurance Companies approved of by Colorado State Insurance Bureau. Post, march 27, 1930 p.41. List of Colorado's most heavily insured. Past, September 24, 1930 p.l. Sixty eight Coloradoans insured br $100,000 report reveals. News, September 25, 1930 p.3.