Kaiser Ventures (formerly Kaiser Steel) is an American corporation, headquartered in Ontario, California. It was founded by Henry J. Kaiser to provide steel plate for the Pacific Coast shipbuilding industry, which expanded during World War II, then shrank, then expanded again during the Korean War.  California Shipbuilding Corporation on Terminal Island, California, was one of these shipyards which built hundreds of Liberty ships and Victory ships in World War II, and was also a project of Henry Kaiser. Kaiser Steel was noted for making the most of its costly steelmaking inputs, and it captured, along with the U.S. Steel plant in Utah, much of the Pacific Coast steel market by the late 1950s. Its assets included steelmaking plants in Napa, California (that it acquired from Basalt Rock Company in 1955) and Fontana, California, and a former open-pit iron ore mine at Eagle Mountain, California.