The company was also a major producer of magnesium during World War II. To make use of its major product, powdered magnesium, PMC also developed and supplied an incendiary bomb mixture of magnesium powder, asphalt, gasoline and others components (known as 'goop', with similar characteristics to napalm); 17,000 tons of 'goop'-filled bombs were used in World War II (approximately 8% of the total tonnage of incendiaries that were dropped during that conflict). Permanente ranked 42nd among United States corporations in the value of World War II military production contracts.
- Wilson, Mark R. "Making "Goop" Out of Lemons: The Permanente Metals Corporation, Incendiary Bombs, and the Costs of Industrial Overexpansion during World War II" (pdf). Rutgers University. Retrieved 2011-07-04.
- Richmond Shipyard
- Rosie the Riveter National Historical Park, Richmond Shipyard Haer No. CA-326-M No. 3
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