Portland Cement Association (PCA) - www.cement.org

American Concrete Pavement Association (ACPA) - www.pavement.com

Northeast Cement Shippers Association (NECSA) - www.necementshippers.com

U.S. Green Building Council (USGBC) - www.usgbc.org

Delaware Valley Green Building Council (DVGBC) - www.dvgbc.org

National Ready Mix Concrete Association (NRMCA) - www.nrmca.org

Precast/Prestressed Concrete Institute - www.pci.org

Southeast Cement Association (SCA) - www.secement.org

Slag Cement Association - www.slagcement.org

Great Lakes Cement Promotion Association - www.michiganconcretehomes.com

Texas Aggregate and Concrete Association (TACA) - www.tx-taca.org

American Association of State Highway & Transportation Officials (AASHTO) - www.transportation.org

American Society for Testing and Materials (ASTM) - www.astm.org

Federal Aviation Administration (FAA) - www.faa.gov

Federal Highway Administration - (FHWA) - www.fhwa.dot.gov

National Fire Safety Association - www.nfpa.org

Transportation Research Board - www.trb.org