Enclosure 1. I Uutllne Ratio of Bone Marrow to Endosteal Cell Dose A. Spiers B. ICRP c. ORNL D. UNSCEAR E. Comparison of endosteal cell to red marrow dose ratio for the various methods. 2. Absolute Magnitude of the Bone Marrow Dose Conversion A. Spiers B. ICRP c. ORNL D. UNSCEAR 30 Overall Comparison 4. Our Method of Calculating the Marrow and Surface Cell Dose for Surface Deposited Pu. 5. Areas of Difference Between Methods 6. References 1