APPEND IX The following extrapolation formula was supplied by Dr. K. %. Morgan for use in correcting for the presence of ThB. fm\* Fe=(T |tsxe* = At ~e (=?) 7) Ty Where T,* Time at sampling mid-point T.= Time at first count T,> Time at second count 2 Ty- Ty F = d/m for MFP at qT X = Total d/m at T, Y = Total d/m at t. A= Decay constant for ThB The value for k given in “Effects of Atomic Weapons” is 1.2, but there is evidence that the value is closer to 2 during the first few days, Therefore, extrapolations will not be made until this value is established for samples of the type used, "| DOM ARCHIVES §