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Joseph Messina is a pump technology consultant. Former principal staff engineer at Public Service Electric and Gas in New Jersey, he has contributed many articles to technical journals on pump-related subjects. Paul Cooper was involved in pump hydraulics and cavitation research and development for the Ingersoll-Dresser Pump Company for 22 years, having directed the company’s R&D for the 14 years prior to retiring in 1999. This was preceded by 18 years as a hydraulic designer of centrifugal pumps and inducers for TRW Inc. He received his B.S. and M.S. degrees in Mechanical Engineering, respectively, from Drexel University and Massachusetts Institute of Technology and a Ph.D. in Engineering from Case Western Reserve University. He received ASME’s Fluid Machinery Design Award (1991), the Henry R. Worthington Medal (1993) and is a Fellow of the ASME. He is the author of many technical papers and holds several patents on pumps.
Charles Heald is former chief engineer with Ingersoll-Dresser Pump Company and a member of the API 610 pump specification committee. Currently a consultant, he is the author of Cameron Hydraulic Data Book, a technical resource published by Ingersoll-Rand.