Identity elements
Reference code
Name and location of repository
Level of description
Item
Title
D42561-2
Date(s)
- 1949-05-16 (Creation)
Extent
Name of creator
(1919-1980)
Content and structure elements
Scope and content
Crust breaking machine at Permanente, Bill Gorman. A specialized machine has been manufactured to perform the work that had previously been done manually. A crust would form at the openings to the reduction pots where alumina was melted into raw pig aluminum. The plant had two potlines containing 240 reduction pots producing 41 million pounds of alumium per year. (Permanente Metals Corp. 1947-1948 Annual Report)
Permanente Metals Corp. (Tacoma); Aluminum industry--Tacoma--1940-1950; Machinery;