Document zDry6xk915nRdLmE31rwYjja

June 12, 1969 Sr. John A. Young Denver Research Institute University of Denver University Park Denver, Colorado 80210 Dear Dr. Young> Aa Indicated In Dr. Kelly's letter of May 7, 1969 to you, I have been asked to reply to your letter of Hay 2. It is true that Monsanto Is very Interested In the reports about possible harmful effects of chlorinated biphenyls on wild life. For nearly a year we have been developing a program to answer some of the questions which have arisen. For example, we now have the neoessary Instruments, personnel and experience for analytical determination whloh we believe la second to none In the world. We have visited In the states and abroad the chemists who Identified polychlorinated biphenyl aa Inter fering substances In pesticide residue analysis. Although we have not analysed aa many samples as yet as soma of the solentlsts abroad, we do now have the same capacity and expertise. He have a number of toxicity studies underway at our consulting laboratories which have long been associated with Monsanto. Inoluded In the program are classical chronlo toxicity studies as well as a number of apeolflo studies due to the uniqueness of the situation In question. NS are a long way from results which might lead to comprehensive environmental studies and whloh might Include* the fate of chlorinated biphenyl in ths eco system, althought a number of ln-house projeots are under way and under consideration. We do thank you for your Indicated Interest In pro posing a reaearoh program. Very truly yours. o.o. b.Ce P. 0. Benlgnua 1: ?: R. E. Keller W, R. Richard Klmer P. Wheeler Manager, Environmental Health MUNS 090710