From prehistoric times, clay has been indispensable in architecture, industry and agriculture. Our Lean Clay and Fatty Clay meet the NJDEP certified clean requirements, and have a wide range of uses. For example, our products have been used for sub bases and sculpting at various levels, and have been tested for ASTM D422, ASTM D318, ASTM D5084 and unit weight. Currently, our clay is used at the Bridgeport Speedway. They chose DunRite because our clay allows water to run off and gives drivers the traction they need.