11.Geology and Ore Deposits of the Blewett Mining District - Charles E. Weaver - Primarily a Gold Mining District, the Blewett Mining District, located in the state of Washington is one of the richest gold districts in the State. This publication was originally Bulletin No. 6 put out by the Washington Geological Survey in 1911. Unlike other reprints we take the time to enhance the pictures and produce a quality reprint. Covered in this publication is the geology, Lode and Placer Districts, and history as well as information on all the known mines of the district.