,< 410120 OBaltelle R Pacific Northwest Laboratories P.O. Box 999 Richland, Washington U.S.A. 99352 Telephone (509) 946-2421 Telex 32-6345 May 11, 1979 Northern Marshall J. C. J. R. C. R. W. R. B. A. W. W. O. R. O. L. C. W. Islands Advisory Group Auxier Francis Healy McClellan Richmond Gilbert Templeton Thompson Wachholz Enclosed is a report purported to describe the method used by Lawrence Livermore Lab to calculate dose. Sincerely, W. J. Bair, Ph.D. Manager Environment, Health, and Safety Research Program WJB:ms -. Enclosure 50 Years of5ervice 1929-1979