John H. Robinson Testing Laboratory performs standardized tests on construction materials to satisfy the requirements of contractors and government agencies. Our mission is to evaluate the construction materials selected by the client for use on the construction project. The laboratory, which is accredited under AASHTO, has broad experience in materials engineering evaluation, testing and inspection for soils, asphalt, concrete and other building materials. The lab is regularly inspected by the AMRL (AASHTO Materials Reference Laboratory), and the CCRL (Cement Concrete Reference Laboratory), and is validated by the U.S. Army Corps of Engineers and the Pennsylvania Department of Transportation. The lab conforms to AASHTO R-18 requirements.