Document jRYaR61DXe7M4dgLpNwb9bj5

1 1/ wim/ss ilr, A. ItiolumiBon, bholl Chor.iioalu, Ainu tall laboratory, bittingbouzno, Kent, Jixi November* 1967 Door hr. ldoliaxdson, I am lad to aotaiowlodi.c receipt of your liolpful letter of bnd bovember conooruing your ojej-eriraonts on tlie poooible oooumno* of polychlorinated biphenyls in mtu-ino birds and thoir c,;;;s, how that it eeo .u oertain tliat contamination by chlorinated Lipho:yl in tuhing , l:\ce wo ax'* l;oon to follow up and dcitormino juut hov and where tha oontaviinatlon io taUin; place. You cold ovor tic telephone tliat you had ovidenoo to buyout tliat t)io leahege oocura in the valley of tha hivor Vithan, and I am diSvX'ctoJy following up tl.ia lead. Hovevc-r, bofora rotting too 'iooply involved 1 feel I should enquire ac to tlie nature of the evidence. In it such oo to oonatituto a voiy pouitive indictmont, or doeo it nugrost that the cot'tcnt io marginally fireator in that urou than eluevliereY Tli 1 s would dourly ncvci an Important i-oarin;-: on tho aror. of uearch. Tliore is uloo tiiu .ino:;tioii of who Liar tlie material deteotod by Janoan l<aa its origin in .-oundinavia i.o. aro there ncm rul oourceo of oontrudnation to be looated? On tho quoution of tiio poo: Able toxio affects, we are as deeply oonoemod in thin particular ty;n >>f contamination aa your Uoivony io in insectioinoo, ;*-!ul un you Buy there io always tho tentlenoy for publio bodies to oxa, , orate tha liAznrd und for vocal members of tho publio to create alaiT. and dcopondcncy. borhapo you oould ooumont on tho relative abundance of (a) insootioideu (b) clilorianlod lipJionyln und give yo>. r view aa to whether tho content of (b; io contributing much to the ucurd. i'oi'oorially I bc-lieve tliat Uio ovorall luuord from theuo ol.lcrinaiod materials Iiaa beer -crossly exaggerated, ju^ tint OSW 018419 > STLCOPCB4004963 the remarkable sensitivity of the tost inothods has contributed in no neaeux in oauein# al&xuu Your sineeraly* Would you please note our trade name for polychlorinated biphenyia is AKOCLOH. i/WOI DSW 018420 STLCOPCB4004964