|When Peter Norbeck was governor, he wanted to help people in South Dakota. He thought a cement plant was a good idea. The state could sell cement for less money than a business could sell it. South Dakota started the cement plant in Rapid City. It is still there today. It was a successful idea. The cement is made from limestone, shale, iron ore, and sand from the Black Hills. It is called DACOTAH Portland Cement. In 2001, the cement plant was sold to a company from Mexico.