The Bergeson prospect/mine also known as the Normandie is located in the Miller River mining district of north east King County. The mine was owned and operated by the Bergeson Mining and Smelting Co. from 1915-1918. The mine primarily was a producer of Gold and Silver. The Bergeson consists of about 1200 feet of workings.
The mine consists of Arsenopyrite and Quartz.
Source : Inventory of Washington Minerals Metallic Minerals Marshall T. Huntting 1956