Keystone Cement Company manufactures masonry cement for the construction of highways, bridges and buildings. The company maintains testing, loading and storage facilities. It operates raw and finish grinding departments. Keystone Cement Company produces more than 600,000 tons of cement in a year. The company serves clients in Lehigh Valley in Pennsylvania. It has a work force of over 180 employees. Founded in 1928, Keystone Cement Company is a part of Cementos Portland Valderrivas. Cementos Portland Valderrivas is controlled by Fomento de Construcciones y Contratos (FCC), an international construction company with offices in Spain.