36 



BIOLOGICAL EFFECTS OF ATOMIC RADIATION 



can be developed. The Subcommittee recommends that research and development along these 

 lines be intensified. 



This interim statement has been prepared at this time to indicate the current concern of 

 the Subcommittee on the leukemogenic properties of radiation and detection of low exposure. 

 A more extensive report is in preparation. 



Eugene P. Cronkite, Chairman 

 Victor P. Bond 

 James B. Hartgering 

 Marylou Ingram 

 George V. LeRoy 

 William C. Moloney 



Carl V. Moore 

 Robert D. Moseley, Jr. 

 John H. Rust 

 Marvin A. Schneiderman 

 Frederick Stohlman, Jr. 

 Carl F. Tessmer 



APPENDIX B 



Interim Statement of the Subcommittee on Inhalation Hazards 



On January 11-13, 1960, the Subcommittee on Inhalation Hazards met in Richland, Wash- 

 ington, to prepare the final draft of its new report on Effects of Inhaled Radioactive Particles. 

 The following statement is the concluding chapter of the report, and may be considered as 

 the conclusions and recommendations that were approved by the Subcommittee. It is ex- 

 pected that the complete report will be available soon for publication and general distribution. 



A general review of available information has been made to define the potential hazards 

 of inhaling radioactive particles. Included in the forthcoming report of this Subcommittee are 

 discussions on the properties and sources of radioactive particles, the relevant physiology of 

 the respiratory tract, the probable mechanisms of deposition of particles in the respiratory 

 tract and their removal from the tract, pathological effects from external sources and of de- 

 posited material, and finally, the application of these factors to assess the possible damage due 

 to inhaling radioactive particles. In general, the conclusions support those given in the 1956 

 report of the Subcommittee.* Additional information obtained since that time has served to 

 emphasize the importance of the problem and to point out the areas where information is 

 most needed. Answers to the problem of evaluating inhalation hazards are still tentative, 

 especially with respect to long-term effects. 



* NAS — NRG Publication 452, Pathologic Effects of Atomic Radiation, 1956. 



