Jim McGilvery, John Winfield and Herb Scribner patent the R3 chlorine dioxide process in 1965 after operating a pilot plant at Thurso, Quebec. The R3 chlorine dioxide generator system, a vacuum, crystalizing process becomes the standard in the industry and ERCO develops its technology sales business. The first full-scale plant is sold to a mill in La Tuque, Quebec in 1971.
