Document 91D5M8x9Z2gBNJZN0N0ZnJ206

>bert A. Rivera ilt t la Ava. 1, California 94602 Rlvara: roar asked that I raply to id contamination of wlldll: 'la (PCB) . ana your nota waa promptaa San Franclaco Chronicla b: tabrough at tha University^ idllna of tha writer, Davie i to aupply Monaanto'a am thould have baan presented. Mr*. Rlvara, lat me aaaurc ipast concam for propar iy affact mankind. In face lture to provlda cltiaa ano= umlnating pollution. One it ramovaa pollutant* i. Anothar unit of far* cin latlng me tar la la released t- f tha Implications In tha iMonsanto does not make DB77 mcerned measurement of itudylng hia full report. :e identification of these* ;a depended upon earlier w*" Lsts using entirely differ** -mora- rch 14, 1969 lattar about tha polychlorinated tha recant artlc : on work dona by California. Unfbrtunataly, :rlman, did not g va Hare are tha f4cts r^ru that Monsanto has our products and recently began ndustry with new techniques i-lity demonstratap in zm. stacks of coal' fired an Improved mat lod trn water. nmicla story are not As you know. Dr. Risebrough's cues found In wildlife, doubt If he made :arlals. It seams ha dona In Sweden bjy sources. DSW 282048 STLCOPCB4063376 A. Rlvara i I should explain that PCB : ' market la aa a functional 11 in electrical tranaformers^ entirely sealed metal con tax. ~~ t modifier In specialised adnea^sa itnical la an Integral part or :----- r ied away, etc. knowledge, PCB la not apraan. Idea, ia not uaed In automobi-------rl plea tic, la not uaed In hci 1. rller work done in Sweden reut 'led as PCB, In quantities a nr ' pesticides. Even though ax t measurement to find them Lx we are highly pussled by one= xnmarclally produced PCB appe* tmlcal la a highly specialises telble answer Is that the sun: a ter la 1 which only appears s alao been implied that PCB L~ :y Is a relatlva mattar whatne ila, drugs or even food, Liks itehold products, PCB is not x ;>erly used. In more than 30 mbleal has an excellent recors rse, Monsanto Is not content x L continue to exercise the hix manufacture and shipment of x cs. We also have our own ream ^stances reported In Callforrtx >rk la In cooperation with fc~ corles. -mora- Ma rch 14, 1969 not a pesticide. Its _uld such as an linjsulatlng Here the chemlc al la aieri. Another PC B market selves and coatlngjs Here xha material and cannot over the land aa are tlrea, Is not found ie paints -- as haai been rrted traces of re sldue, rroaching that of DDT - these residues zjequlred xhe parta-per-bl l|llon act. How could that -T In the natural environment? r product used In restricted xance is not rea ly PCB, -a a ''highly toxic material. asxr we are consider Ing =x thousands of In4us trial -s. hazardous mater al if it ^er of Industrie 1 uaa. -- o Just raise quei tions. snait degree of cnmtrol x*cb -- as we do w th all a&rch program to .dentify end Swaden. S>(NM of =seral and university DSW 282049 STLCOPCB4063377 Mr*. R. A. River* March 14, 1969 The source of the residue* idenc~ ^ --d. as PCB is not yet known. It will taka extensive research, -=-- worldwide basis, to confirm or deny these initial scientific - er- sorts. sincere ly, TCFisfh coo C. Ford csacnager rxviaional Public Rilations DSW 282050 STLCOPCB4063378