Located in Coralville, Iowa, River Products Company is a producer of crushed limestone, sand and gravel products. Established in 1920, the company employs more than 80 people and provides various products and services. Its quarry and stone yard products include road and ballast stones, base material, agricultural limestone, bank sand and dirt, radon filter material, cement concrete and asphaltic concrete aggregate. The company offers a variety of sand and gravel products, such as concrete sand, asphalt and commercial concrete and gravels. Its products also include pellet dusting lime, limestone boulders, and crushed granite and quartzite. The company has offices located in Iowa City, Columbus Junction, Keota, Riverside and Washington in Iowa. Additionally, it offers a site-specific hazard awareness training program for its contractors, customers, vendors and visitors. The company is affiliated with various organizations, including the Iowa Limestone Producers Association and the National Stone Sand & Gravel Association.