\ . * MOODY'S MANUAL OF INVESTMENTS AMERICAN AND FOREIGN INDUSTRIAL SECURITIES JOHN SHERMAN PORTER, Editor-in-Chief Editorial Board Joseph A.

o United States Patent Office PRINCIPAL REGISTER Trademark J5,8;1" Ser.

NEG.NO.

INDUSTRIAL HYGIENE FOUNDATION OF AMERICA, IN 4-400 Fifth Avenue Pittsburgh.

Riley Stoker Corporation Annual Report For the Year 1946 Officers Fred H.

Industrial Hygiene Digest INDUSTRIAL HEALTH NEWS LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL TOXICOLOGICAL LEGAL-- - decisions and bends FEBRUARY, 1948 (Vol. 12, No. 2) INDUSTRIAL HYGIENE FOUNDATION 4400 FIFTH AVENUE PITTSBURGH 13, PA.

0-C O W ENS'CORNIN G FIBERGLAS CORPORATION INTRA-COMPANY CORRESPONDENCE General Offices - Toledo, Ohio July 8, 1944 Attention of y.r.

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executive ornces Iyeasbey & Mattison Company w.urfccru*es or asist mb hacmesia *#oojcte *mct ietj AMBU5B.

1R 1943 SEPTEMBER 1963 gasket with an engineering degree The compression response in Flexitallic Spiral-Wound Gaskets is directly related to bolting for each application.

---------------------------------------------------------- FEDERAL SECURITY AGENCY U.

SXfg&XSEHUL HOBS. ~ SAB&SAC XABORATCBY grinding Dust Bxpoeure on laboratory Animals December 24, 1946 Hr* I* Dunn* Treasurer *ew York Office ' Enclosed herewith is a report covering the first 10 soothe of our experimental work which Dr* Gardner wae doing for us at Saraaao Lake* You will note that in mih of the groups of animals exposed to duet ora* an 8 to 10 month period* the findings as far as production of fibres is in the lungs is concerned, are essentially negative* In other words the experiment thus far warrants a tentative conclusion that the &st exposure in our grinding operations while producing changes observed in'the x-ray fils is a relatively inert dust* This substantiates ^ original impression that the nodulations we have seen are not due to true silicosis but are similar to the changes observed In lunge of "persons exposed to iron dust* It is of course too soon to draw any definite oonolusions but the Implications are very encouraging and very .

PLAINTIFF'S EXHIBIT Hew York 6, Hew York March 23, 1949 DP:LC Mr.

12 Industrial Hygiene Newsletter Volume 8, Number 2 MASSACHUSETTS Conference--Dr.

In March, Plant and Tool Engineering were combined into one General Engineering Department, and with the completion of the new quarters in July the two groups were combined in fact.