-21TABLE III FRC RADIATION PROTECTION GUIDES / Whole body Gonads Individual Population Group 0.5 rem/yr 0.17 rem/yr - 5 rems/30 yrs Thyroid 2/ 1.5 rems/yr 0.5 rem/yr Bone marrow 0.5 rem/yr 0.17 rem/yr Bone 1.5 rems/yr 0.5 rem/yr Bone (alternate 3/ 0.003 ug of 0.001 pg of 226p, in adult skeleton 2263 in adult skeleton guide) 1/ For conditions and qualifications see FRC Report Nos. 1 and 2. 2/ Based upon a childs thyroid, 2 gms in weight and other factors listed in paragraphs 2.10-2.14 of FRC Report No. 2. 3/ Or the biological equivalents of these amounts of 226R,, tte ‘ a . fa ny, ge e SOTABL BTN GRY 4 : : ’ re . A :s eS a _ Seb bs Bo de By at a wot root