1. Accident at Windscale No. 1 Pile on 10th October, 1957. Cmnd. 302. (H.M.S.0.,1958).
2. Stewart, N. G., and Crooks, R. N., Nature, 182, 627 (1958).
3. Burch, P. R. J., and Spiers, F. W., University of Leeds (private communication).
4. Recommendations of the International Commission on Radiological Protection, Brit. J. Radiol., Supp. No. 6 (1955).
5. Spiers, F. W., and Griffith, H. D., Brit. J. Radiol., 29, 175 (1956).