PLAINTIFFS EXHIBIT EXX-84 DUST PRODUCING OPERATIONS IN THE PRODUCTION OF PETROLEUM PRODUCTS AND ASSOCIATED ACTIVITIES A MEDICO-SAFETY SURVEY BY Roy S.

-20- According -to an analysis of particle size made by the Bayonne Laboratory of a sample of Raw (30-60 grade Attapulgus Clay) Ho. 1, No.3, and No.8 Wedge clays, the following is the size classification or distribution: Raw Clay #1 Clay #3 Clay #6 Clay Coarser than 100 mesh 98. 5% r......... " .....

Preliminary Dust Survey for Asbestos Textile Institute June, 19*7 o Engineering. -- Mechanical cathode vore seen in use in ano or rare plants vhich effected practical dust control in ell operations, bringing dust concentrations down to five Gillian or lower with one cr two exceptions.

Preliminary Dust Survey for Asbestos Tcxtllo Institute June, 1947 15 ESTDvMZD IKCDcTCS 0?

t The joint safety committee met regularly three times each month.

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c& 11to4 In nor**!

Industrial Hygiene Digest_____________ ___________ ;January, 1950 I. ' " *.

Program Committee E.

y,c T *v / HEALTH AND SAFETY ACT id fit HEALTH AND SAFETY RULES RULES A-M f H* .

Contents 8 Pathology of Coal Workers' Pneumoconiosis Arthur J Vorvald, M.D. 35 9 Epidemiology of Coal Workers' Pneuaoconioais in Vales M.

2k7. over the long range period of time on safe levels of dust, because of the individual exposed long enough toa dust, he will get the same effects over a long period of time which he canin a short period of time in higher concentration.

Page 3 pedal is being "pumped," the end of the hose must be submerged in the fluid.

the present time, plans are under way to eliminate even these.

whenever possible, and this can be accomplished successfully only when we have a complete understanding* There nay be times when we may not have the immediate answer, however, again it is our responsibility to assist you in getting the answer to your problems.