Document wqB7qM8Z0Bvvq30xbagVmB74d

JAN 2 7 1967 Kasocb J. MwmiWi MJ>. Diracir THl UNIVERSITY OF MICHICAN INSTITUTE OF INDUSTRIAL HEALTH MEDICAL CENTER ANN ARBOR, MICHICAN 4S104 ' attachment January 25, 1967 Mr. Frank B. Carman Manufacturing Chamiata Aaaociation Washington, D.C. Daar Mr. Carman As promised at our moating in Ann Arbor on January 24, I viah to re-emphasise eomplata understanding of tha abaoluta nacaaalty of maintaining aaeurlty on tha confldantlal procaaa and ingra diant information chat va naad to obtain to carry out tha PVC atudy. This la by no maana a new probXam eo us or to any of our staff who will ba visiting thaaa plants. 1 should lika to auggast that althar of two couraaa ba followed dapandlng upon tha viahas of tha individual companlas. First, confldantlal and aacrat Information ragarding chmieals, thalr approximate concantration, tha procaaa in vhich they ara usad, and tha time during irhlch thay hava bean used from January 1, 1960, to tha present may ba sent directly to me in a double envelope. The inside envelope should be marked "company secret"; the outside envelope should carry ay address and should be sent by registered mail. On receipt at this office, this information will ba seen only by me and will ba retained in a security file to which I alone have access. During the analysis and reporting of the study, these compounds will ba handled by a coda known only to me. Tha second alternative would be to make this information available to our industrial hygienist when he surveys tha plant with the understanding that this material would then be brought back to Ann Arbor, placed in the same security file, and otherwise handled in the same manner as material sent directly to me. If we are to unravel this perplexing situation, it is absolutely essential that we have tha detailed information that will permit inter-company comparisons. I suspect that these inter-company comparisons will make possible the elimination of many ingredients as potential offenders in a way that would be impossible in the absence of these confidential data. Sincerely yours HJHsmld RSV 0009238 092^1022 1 TS2&T022 BFG54746 ^ Ti" Tiiiifiiiltfln^iirii'ii