Industrial mineral site no. 1636, known as "Chewelah (Waterman)" is a site in Stevens County, Washington. This site has been associated with silica sand. A notation found in DGER Bulletin 37 on page 128 says "Loose sand, quartzite pebbles and cobbles as much as 6 in. in diameter. Analyses run 98 percent silica and 0.35 percent ferric oxide. Fusion at cones 32 to 33. Abrasion resistance equal to or better than that of best California blast sands", and designates the value as "Currently operated by Manufacturers Mineral Co., Seattle, and sold as molding and filter sand ".