Profile: Knife River Corporation offers a variety of aggregate material. Our products include sand, gravel, crushed stone, liquid asphalt, cement, ready mix concrete, rebar and waste asphalt. Our services include aggregate placement, asphalt paving, ready-mix concrete construction and paving, concrete pumping, marine construction, petroleum recycling & contaminated soils remediation. We specialize in the asphalt paving of roads, streets, highways, driveways and parking. We provide complete construction services for the excavation and installation of underground utilities, ranging from mainline water & sewer to telecommunications.