FALL-OUT MEASUREMFA'TS IN AUSTRALIA 



results should be compared witli mean values of about 8 mC/km- for tlie 

 United Kingdom and U.S.A., from data reported by the United Nations 

 Scientific Committee. 



Tabu 2. ""Sr, mC/km'' for Australia 



Another conclusion which may be drawn from the existing information 

 and also one to be expected, is that only a small percentage of the surface 

 accumulation of ^''Sr in Australia has arisen from local tests. The infor- 

 mation in Table 2 indicates that the levels are sensibly uniform across 

 southern Australia, and, since Perth does not receive fall-out from Maralinga, 

 the contribution from local testing should be manifest as a difference be- 

 tween the levels in eastern and western Australia. In addition the levels of 

 ^°Sr reported by the U.N. Scientific Committee for these latitudes in South 

 Africa and South America are about the same as those for Australia. 



Collection of material in this sampling programme is continuing and the 

 results for the first stage will be reported in full as soon as the analyses are 

 completed. 



REFERENCES 



^BuTEMENT, W. A. S., Dwyer, L. J., Eddy, C. E., Martin, L. H. and Titterton, 



E. W. Aust.J. Sci. 20 (1957) 125 

 ^Butement, W. a S., Dwyer, L. J., Martin, L. H., Stevens, D.J. and Titterton, 



E. W. Aust.J. Sci. 21 (1958) 63 

 ^Dwyer, L. J., Keam, D. W., Stevens, D. }. and Titterton, E. W. Aust. J. Sci. 



20 (1957) 39 



^Keam, D. W., Dwyer, L. J., Martin, J. H., Stevens, D.J. and Titterton, E. W. 

 Aust.J. Sci. 21 (1958) 8 

 ^Keam, D. W., Dwyer, L. J., Stevens, D. J. and Titterton, E. W. Aust. J. Sci. 



21 (1958) 99 



*Hallden, N. a. and Harley, J. H. Laboratory Report 56-2 Health and Safety 

 Laboratory, United States Atomic Energy Commission, 1956 



'Russell, R. Scott, Martin, R. P. and Wortley, G. A.E.R.E. ARC/RBC 5 (1956) 



*BusTAD, L. K., George, L. A., Jr., Marks, S., Warner, D. E., Barnes, C. M., 

 Herde, K. E. and Kornberg, H. A. Radiation Res. 6 (1957) 380 



* United Nations Scientific Committee on the Effects of Atomic Radiation, Report 

 to the General Assembly, 1958 



144 



