Document JrXRbpxD3q2Gp9RbEymn23YqO

PLAINTIFFS EXHIBIT .m^unsu cci Mr# J* 0* 4laek - Toledo Jrebnuiy 2j, 1956 Dr# James lusty Tuberculosis Control Officer, ^ayne bounty 21*6 South lork Dearborn, ;?Uhljaa PLAINTIFFS EXHIBIT 5@i,Q... Dear -r. -uby* rollowirig up our tfcone oonversitloa of yesterday, I enclose the details or ll* problem <tlth i.nich we are coitfrouted* In the pact, and a tr present time, t,Le iaranac Laboratories hare ''one research ca cur basic glass fibers aad on combinations ox* gloss fibers ^ith Polyester resins and calcium carbonate# Ibe earlier researches were instituted about 1?59 or 1?1j0, at which time glass fibers of warions disasters and lengths wero sent there for Investigation# The aoallest ones (aai the only ones with r&ich ttg u concerned) were from 1 to 6 ciicra Ja disaster# These are so-called Aerotor fibers# "bile no work was ever published by Dr. Leroy Gardner, who conducted these studies, the verbal asd written interval reports which he submitted to the company were uniformly favorable and indicated that glass fibers were Innocuous and inert - and so we thought until the fall of 1955, when it eom to our attention that Dr* 0* -u a# Schepers had published articles in the archives of Industrial Medioirm which would Indicate that glass fibers had a toxic affect, producing pfieumocoftiosis similar to ashesteais* On closer inspection. It is found that this phenosanon is produced only by glass fibers of fran 1 to 6 sdors in diameter and no greater than 50 micra in length. Incidentally, I coderstand that when the length approach** the diameter, ao change is found. The <!* described in the articles ware subjected to erpoaure in a dust chamber and intra tracheal icjeoticaie for a period of three years# At the eizi of the second year,&o changes were found in the sacrificed animals# Dr# Gardner dis continued his work after- two years, but, by mistake, some of tbs animals were allowed to continue to survive is the dust chambers# it the end of the third year these animals were sacrificed and histologic elides of the pulmonary^ tise were mounted end filed away# *hea Dr# Schepers came to the Foundation in 1P51, he decided^ to "close the files*# IfcmreupoB, ha deluged the Archives of industrial Medicine with small articles about various products, including Flbergla*,- nd one of Owens-Hlinols Glass 0cmp*sy called 2taylo. 01 501 1572 .0/ Dr* Joses 3ustgr february 20, 3556 How It la 6elfevident that this condition could scarcely be duplicated In Industry* In the first place, the fitsr9 are :sct cut nor allied to this length* la various fabrications eht-re you .su^t find fibers of this lengthy the quantities would be Indeed ainute and the exposure consequently of the lowest conceivable degree* Unfortunately, Yr. Schepere did not qualify his articles, and to the casual reader, or for excerpts tar oedleal-legal purposes, the articles are very unfavorable to us* Of course we anticipate starting bob* new basic fiber studies, but as you can see, It will be at least three yetrs in caspLeticew '~e anticipate no difficulty in qualifying the statements that have been made* As I told you by phone, 2 thought that a aUtenant from you sight be helpful in view of the fact that you reed our x-rays and repeat x-raya of employees for a period of frea to 1951 when you left Unking County* 1 believe that your conclusions on the basis of those x-rays Mould have beta that the people exposed to fibrous gloss, eaployed at the Newark plant, apparently did not contract any type of pneuaoconiosis as a result of exposure* You certainly reed stony repeat fling of people eeployed In our Aerocor division, the one under question* by us* -toy statement that you aay core to nakc would be greatly appreciated Very truly yours, a*h&-coRNisa MBtaaus coxPiratioh Dr* C. 3* Bishop JUMtu/ *>>* CSB/tor* 01 501 1572 .09.