Document vVan9ezGM0EpX1e8V4O2Zg8MY

J Dr. R. S. Joyner Onion Carbide Chemicals Company F. 0. Sox *71 Texas City, Texas December S3* 1957 Dr. H. F. Smyth, Jr. COHFIDEMTIAL Dear Hoyt We do not know of any literature reference as to the effects of finely divided vinyl resins when Inhaled. The only exception night toe the artlole published by Dr. Hex Wilson on plasties In which he nentloned that they are considered inert dusts. X renenber having routine ehest X rays done on those employees at South Charleston who were exposed (sane for Many years) to these dusts and found no evidence of abnoraal changes in the lungs incident to sueh an exposure. The films were read by a competent X-ray specialist. Xevertheless, even though such dusts are considered inert, the exposures in the packing departawnts, etc. have been in exoess of 50 Million particles per cubio foot of air breathed. There is the possibility that a elala for enphyseaa Might be node based upon an excessive exposure to an inert dust. X do not think the findings at your plant indicate any abnomal chest findings either from this exposure. Dy copy of this letter, X an asking Henry If he knows of any literature reference as you requested. cry truly yours. Tfcoaas W. Hale, M. D. MEDICAL DIRECTOR ucc 063304 h 9 From the Office of Roy E. Joyner, M. D. CARBIDE A CARBON CHEMICALS CO. TEXAS CRT, TEXAS J- */*<-- -DATE- received 0EC 2 3 1957 WTtttlUft 4 -J ^Seizes cfate. Ae. ifa&edtf oT rs* lr fa til,* w--* Ce9/i JUt pa*et~ yr*r- -- T-f yttt letZ?U* sAt&L* *&<< u. n. $OEqq OoC