Document ymZ916ogek5orLZM5zv2KjdbX

COPY bees. R.E. Keller E.P. Wheeler R.A. Baxter "Fair View", Hoghatch Lane, Folly Hill, Farnham, Surrey. 15th May, 1969. Mr. J. O'G. Tatton, Laboratory of the Government Cornwall House, Stamford Street, London, S.W.l. Chemist, Dear Tatton, My colleagues Drs. Keller and Wheeler join with me in expressing our best thanks to you and Mr. Collins for the frank discussion at Monsanto House on May 1st. I have now received reprints of the following publications which you promised to make available to us:- (1) "Organochlorine Pesticides in the Atmosphere" by D.C. Abbott, R.B. Harrison, J.O'G. Tatton and J. Thompson: Nature, July 16th 1966, pp 259-261. (2) "Organochlorine Pesticides in the Atmospheric Environment", by the same Authors: Nature, December 25th 1965, pp. 1317-1318. (3) "Chlorinated Hydrocarbons in British Wildlife" by D.C. Holmes, J.H. Simmons and J.O'G. Tatton: Nature, October 21st 1967. (4) "Organochlorine Pesticides in Rainwater in the British Isles" by K.R. Tarrant and J.O'G. Tatton: Nature, August 17th 1968. Please accept my best thanks for this further service to the enquiry we are making. As you know, our enquiry is in the early stages and we are puzzled to know how the PCB contamination has occurred. Jensen's observation that contamination was first detectable in birds collected in 1944 could possibly be significant, as it suggests that the large-scale destruction of stores of all kinds by burning and sinking could be the most likely cause. Presumably consideration has been given to this possibility in the corresponding investigation of pesticidal contamination, although to date nobody appears to have mentioned it, and it has not cropped up in any of our recent discussions. Your comments would be greatly appreciated. Yours sincerely, DSW331035 D.V.N. HARDY STLC0PCB4100910