Permanente Metals Company (PMC) managed the Richmond Shipyards, owned by Henry J. Kaiser. These four of the Kaiser Shipyards were known for the construction of Liberty ships.The company was also a major producer of magnesium during World War II.
Permanente Metals Company (PMC) managed the Richmond Shipyards, owned by Henry J. Kaiser. These four of the Kaiser Shipyards were known for the construction of Liberty ships.The company was also a major producer of magnesium during World War II.