CONTENTS INTRODUCTION © 00. ee een ert eee eeeeee Toric 1—Decay Constants, Weathering and Shielding................. MerroroLocy—FaLLout anp WHATHERING...... L. Machta and K. M. Nagler Raoration Proracrion Wiraty a Stanparn Housine Sraucturs. Robert T. Graveson ‘ Tur Apeiication or Automatic Wasupown To Prrcuep Roors.. A. J. Breslin Toric JI~Gamma Energy Spectra and Geometry Factor.............. Suort-Livep Fisston Propucr Gamma Rapratio W. Zobel and T. A. Love Page Vv 1 13 19 23 25 Brier Summary or Gamma Rapiarion Spacrrs From Rusipvan Rapiation Sources Fotrowine a Nucvear Deronation...... R. L. Mather Turonetican CaLcuLaTions or THE Gamma Raniation Spectrum From Inrrtau ann Fan.tout Rapiations or Nuctear Weapons.. 39 Grometricat anp Enurey Factors Inrusncine tHe Erracr or PENETRATING RADIATIONS ON MAN... 0.0. eee eee 65 D. C. Borg Vv. P. Bond Discussion on Toptc ID... 0... neers 81 Toric [1-—~Biclogical Repair Factor..........00-. 0.00000. e cee eee eee 85 Damace In Inprvipuats AND Poputation Groups............ 87 Rare or Reparr or Rapration Damage In Mick.............-- 93 APPROACHES To THE QuaNnTITATIVE Estimation oF RADsATION INJURY AND LETHALITY... 00.0 ccc tee tees 101 Recovery From Latent Rapration Insuny rn Revatron ro PrrMISSIBLE Human EXPOSURE. 2.0.0 .00 0000 occ ee eens 113 Repair Associatep Wirn tHe Erosive Errscts or Fantovur Paul 8. Henshaw John B. Storer George A. Sacher H. A. Blair Discussion on Torte TIL, 20.0.0... cece eee ees Toric 1V—External Beta Radiation... ........0 00.00.2000 eee eee 119 126 MarTHeMatican AIDS IN THE UNDERSTANDING OF THE BroLocicaL Hazarps or Resmpuan Rapration..............- as 127 Tre Errects or Fautout Rapiation on THE SKIN...... 62.66 135 Discusston on Toric IV............00 000005 Lene e eee ne ene 143 James T. Brennan Robert A. Conrad. mi a iii