Spec 6M appears in my October 1, 1994 CFR at 178.354. James J. Thompson, Ph.D. ------------------------------------ jjthompson@rso.utah.edu | Radiological Health Department | (801) 581-6141 (office) | University of Utah | (801) 581-4206 (FAX) | 100 Orson Spencer Hall | | Salt Lake City, UT 84112 | ------------------------------------