Based in Beaumont, Texas, Knife Rive Corp. is one of the largest producers of building materials in the United States. Its core products include aggregate, asphalt, ready-mix concrete, liquid asphalt and cement. The company provides an array of construction services and specialty services for both the private and public sectors. Knife Rive Corp. offers products, such as building materials/tools/hardware, as well as masonry, among others. The firm renders services, such as highway construction, landfill and marine construction, petroleum recycling and many more. It is a subsidiary of MDU Resources Group Inc.