The symposium on Rating of Nonmetallic Inclusion in Bearing Steels was presented at May Committee Week of the American Society for Testing and Materials held in Boston, Mass., 22-24 May 1974. Committee A01 on Steel, Stainless Steel, and Related Alloys, Subcommittee A01.28 on Bearing Steels, sponsored the symposium. J. J. C. Hoo, FAG Bearing Corporation, presided as symposium chairman, and P. T. Kilhefner, Jr., U.S. Steel Corporation, and J. J. Donze, Timken Company, served as symposium co-chairmen.