Exterior of new anhydrous ammonia plant at Hooker Electrochemical, completed in May of 1952. Ammonia in gaseous form is composed of three parts of hydrogen to one of nitrogen. In the plant, the hydrogen and nitrogen are mixed in the proper proportion, subjected to 5,000 pounds to a square inch pressure and then sent to a converter and combined to make ammonia. The ammonia is placed in storage tanks outside the plant to await shipment by tank car. (TNT 10-19-1952)

Hooker Electrochemical Co. (Tacoma); Chemical industry--Tacoma--1950-1960;