Identity elements
Reference code
Name and location of repository
Level of description
Item
Title
D57517-4
Date(s)
- 1951-04-09 (Creation)
Extent
Name of creator
(1919-1980)
Content and structure elements
Scope and content
Philadelphia Quartz Company, established in 1942, was the only sodium silicate plant in the Tacoma area. Belgian silica sand and California soda ash were chemically combined to obtain the product sold largely in Tacoma but marketed also in other Northwest cities. Silicate of soda, water-glass to farm households, was used in adhesives for the plywood industry and corrugated paper-board for the container industry. Televisions of the time required potassium silicates to produce the phosphor screen in the picture tubes. Philadelphia Quartz was headquartered in Berkeley, California. (TNT, 2/17/1948, p.6-A; 5/17/1954; 5/16/1955)
Chemical industry--Tacoma--1950-1960; Minerals; Philadelphia Quartz Co. of California (Tacoma);