Document j5wpNg151wNbJav1Y58GdGJQ

" -r < July 28, 1956 e&/?1 u s Z welsaae your litu.* an tit# nlitit topics of pulmonary function isi asbestos. As you imow, *e art utirtl; working vita It. Natl0 of CDutn works os a srastlaal pulaooar7 function tooting progrta and wo hart alto been studying eha Mal:.k. if cat pip* eororor*. At this tsia Z should Ilka to too Chaahora Work* used at the site far a pilot study la 'routine* pulaenary function testing, and vita the axporlaneo sained there 00 will ha tilt to saka v r*en=*ndatiena. far the uaa of Su Pont plant* in ganaral. The asbestos situation la Su Pont la a difficult an* te aataaa due to the relatively uiU maw af people exposed end the dimaalty or oatamaiac tao either la uni of taa Type of aatarlal involved, the duration of the exposure, or Ita intensity, Z aa keeping laforaod on the.various studios nor game ahead on tbt health effects of aahostes, hut no results are expected free theca for several years. What is asedsd to bring the 9u Peat study to a noaamgfui soaelusioa is a datailsd study of personnel records to define at leant the length of exposure. Zt Is very doubtful that dust sonssntratioa data can ho obtained for past erasures, and oven far current exposures it presents sosi technical difficulties due to the Ians thin fiber* hems sueh acre difficult to count than the usual dust psxtlslss. We hare earned out the studies to date on our own funda hut Z think a ooatrihutloa frea the operatias depart- aants should now ho requested. Your Interest la those topics tneourmgss at to hope for a rsry fruitful sanaa of Joint studios between Xaskell laboratory, Sidney Pell'a group, aad the plants. Z aa onslealng, aa a natter ef interest, a aaaerandua prepared la late 1981 aa a Justification for a pulhoaaJT function testing prograa. the argiaents used tnea are at Isaac aa valid today. OewtNCk **WO tr (J3J3 * a * rw> SJS/dyh Zaelosure- DU 021918