CH U RCH ILL 5900 Everything for Mine and industrial Safety CABLE AD D RESS "M INS AF" PI T T SBU RG H BRADDOCK.THOMAS AND MEADE STREETS 8< } February 15, 1944 Dr.

John J f h a l r , 'f,D.

GOSS P RESI DENT Lake:Er ie Chemical .ComPAS,f . ...' 2 2 0 0 SCRANTON RD.

April 9, 194?

mmmmmoonmmimthb fou^dw w fns flart ' '' OF THE JQHK30H BBQBZB COKPAHY OF gfetf CASTXX.

June 18, 19$* Dr* Bradford C* Scuddor Modleal Director The Grasselli Chemical Company Cleveland, Ohio Dear ""Dr* 'geudders ' ' ' ' ' .......... . " X am sanding you herewlfeh three copies of the analyses which have been capifeed up fee the prosanti time, and you rill note that only a few remain to be dono so fcliafe Ife is possible afe presenti bo givo a brief analysts of the situation* .... h&t ibo call your attention to the fact that vq have nob yets received the pads from the respirators, and that the results on then will be of considerable importance since they will show the exposure frost a some what different angle* We should have the results on these before our data aro complete and entirely satisfactory* By way of preliminary orientation, lefc a ' point; out that the normal figures for lead Ij&v a mean figure of about; (*2) mgs* per sample of faeces, but that th normal figure sometimes goes as high as (*9) ssg* X think m are safe in arbitrarily setting th level of normality her at such a figure that any amount above {*5 ) mgs* ay be regarded as a significant and definite lead exposure* The urines of normal individuals rarely run in excess of {*06} Any figure of (*10) or over is, therefore, definitely above th normal range* As to arsenic, the con centrations in normal individuals, in our experience, rarely exceed (*0&)mgs* so that If w set (*1) as th proper level of normal, wo shall have a fairly satisfactory criterion* It Is Quite apparent from the results that there la a significant exposure to lead in the Insecticide plant and in the 2ino Oxide plant* Judging from the observations which 1 made in both'of these plants, the use of respiretore has materially reduced the hasards* I am somewhat surprised to find that respirators are as effective as the figures indicate* Despite the respirators, however* ife Is apparent from the fa cal figures that a fair proportion of the men are exponod to considerable amounts of lead* It is also apparent from the distribution of high findings in'the urine that a number of th men have been aboorbing lead in signifies amounts .'

ANDREW F L E T C H E R .

July 30, 1956 M r.

/ su e.

J.

G l e n s Fa l l s ,N,Y.

0016244

F e b r u a r y 20, I9I4.6 Hr. 0.

JEW ELL W.

AN ,CE C HA I R M A N R.