Igor KarassikIgor Karassik held senior positions at the Worthington Pump and Machinery Corporation. Joseph Messina has held positions with the Worthington Pump and Machinery Corporation and the Electric Power Research Institute. Paul Cooper served as director of esearch and development for Ingersoll-Rand Research. Charles Heald is former chief engineer and manager of engineering with Ingersoll-Dresser Pump Company. Read More Read Less