Document qd1d36MzqXky4x872MYqdwpVk

June 1, 1950 Mr. V. G. IlnZord Industrial Relations Division Ovrcs-Iilinois Glass Ccapany Toledo 1, Ohio D?c.r Bill: . ' -;I > r ; ' -- vi ' vV'; - : .. The Trudeau School currently in cession prevented o core pi'empt anever to your letter of Hoy 16. It finished today end 1 dq nev ready to attach the accumulated correspondence. In rovievln^ your letter the first order cf business is to urge you sod loctor Shook to visit Saranac Lake. >iy calendar is full to the ciddio cf Juno. Select cry tise after that date vhich is most, convenient for both of you. The second point vhich you raise relutes to the 1-Ray Department end the Berries by the Foundation for the reading end interpretation of chest roentgenograms of your employeee. In consenting upon this r-atter as requested in your letter of April 3/ there is certcinly no objection on our part should you prefer that the natter be fcrcalined cn a contract basis. In n?ny respects, none formal agreeaent vould ease our administrative duties. I rather expect aloo that it vould entisfy your 'purchasing department. The agreement of last year ves based on a flat rata of $4.00 per chest case. In explanation, per chest case refers to the roentgcnogxtas of eech nan at a given date. Thus, the case night consist of only a single file, or it night include a stereo pair, a lcternl, and an oblique. The fee of $4.00 vould cover the entire lot. If on the other band tvo dates vere involved, ye vould consider that eo tvo cases. Ve see no reason to change that foe, unless thero is ncao objec tion on the part of the company. It lo indeed a relatively low figure end ve keep it there only because of our continued interest in problems relating to the inhalation of dust. Tne opportunity to study clinical material of this sort in of txenandous help in our research progran. Mr. V. C. Hazard -2- June 1, 1950 Th third point concerns tho experimental investigations with Li'jlo vhich nre about conpic ted. Only a few sore eninnls resain. Tncso ill b-s sacrificed nest ncnth. Then vo vill be rscriy to prepare the in.nl report, for your information, at tills tine, I beliove the findings poroit the following! . Ksylo dust cn inhalation Tty experisentsl animals docs not produce siliconis irrespective of the mull cuount of quarts present. It doe3 produce the nsbestotic type of re action in the lungs and, therefore, ve believe every precaution should b* taken to sinimit exposure of industrial rsplayees. ' Fnylo dust oa inhalation by experimental animals in fected with toberclo bacilli (ft ) produces only & very olid . stimulation of tho tuberculous infection,' nuch lec? than that caused by the inhelntion of purs quarts. ' This evidence leads us to believe thut In industrial practice tho minimal allow able concentration of Saylo could bo far in oxcc3S than that accepted for quart* before ileylo would havo en adverse ctisru-- lilting effect upon s tuberculous-infection in.espcnod onployros. Thio evidence vould support tho view that inhalation of Lsylo dust vould not be hazardous fron the standpoint of tutorcnlosis, especially provided that tho dust hazard in controlled es cited above. Ve are looking forward to having you end Doctor Shook with us the latter part of June. Sincerely yours AJVxbv cc: Dr. Shook Ksylo exp. Tile irthur J. Vorvald, M.D. Director I *.