Tda Research

Established in 1961, Hazen Research Inc. specializes in performing industrial research and development for clients in the mineral, chemical, energy and environmental fields. Based in Golden, Colo., the firm provides a number of services, including laboratory-scale research on new processes, adaptation of known technology to new situations, pilot plant demonstration, preliminary engineering and cost analysis. It develops hydrometallurgical, pyrometallurgical and mineral beneficiation processes for commercial metals and industrial minerals. Hazen Research Inc. s projects range from beaker scale experiments/analyses to continuous pilot/demonstration plants.

Founded in 1956, Wiss, Janney, Elstner Associates is an employee-owned firm that provides a range of services and solutions for the construction and building industry. It maintains more than 15 offices throughout the United States. The firm offers structural evaluation, facade assessment, historic preservation, litigation consultation, roofing and waterproofing, and bridge, earthquake and blast engineering services. Wiss, Janney, Elstner Associates also provides peer review and commissioning, repair and rehabilitation, and failure and disaster response services. It has laboratory and testing capabilities. The firm operates the Janney Technical Center, which is an over 25,000-square-foot construction-based testing laboratory. Wiss, Janney, Elstner Associates has completed various projects that include Castlewood Canyon Bridge, Fort Mason Tunnel, Hellman-Quon Building and Thomas Edison High School.