We also know that there is no accu mulation of excessive amounts of lead] in the tissues of present day persons outside the lead trades.

Vapours emerging from the drum opening constitute the main source of lead in the air

I have observed some very definite effects on the incidence of lead poisoning, and on the lead in the atmosphere in association with increases in the concentration of lead in certain types of alloys.

I believe the tetraethyl lead area has a maximum approved specification of 0.002 milligrams of lead per cubic foot of air about the area.

The men are employed in Lead Azide. !

The physiologic background of this problem has been vorked out adequately only in the case of lead.

If the men actually had a severe exposure, these symptoms will continue until most of the absorbed lead has been excreted, and until the lead concentration in the blood and urine returns substantially to normal.

I believe the tetraethyl lead area has a maximum approved specification of 0.002 milligrams of lead per cubic foot of air about the area.

My associates and I, over a period of years, have made ourselves available, in connection with our responsibilities to Ethyl Corporation, as well as our agreement with the United States Public Health Service, to investigate carefully any and all lead exposures or alleged lead exposures associated with the handling of tetraetliyl lead and leaded gasoline.

S* The lead silicate operation consists oft (a) '"eighing 30J* of lead acetate taken from a drum into ascreen box on scales* Drum* box* and scales arc inside of a ventilated booth and in which any dust arrising is drawn out of the back of the hood and away from the operator* (b) The box is hung on a drum and dissolved with water* (c) Silicate of soda is made up in another drum* (d) There is also a pump on each drum and the solution from the two dr ms is then pumped into a third drum, mi:ced and precipitation then takes place* (e) The solution in. the third drum is then pumped into an Dr* B. 3.

RAK IEAD CONCENTRATION FOUND IN HUMAN TISSUES Summary of Our Cases In Fatal Tetraethyl Lead Intoxication Lead in Milligrams per 100 grams of Fresh or Fixed Tissue Identification by Initials Liver Kidney Brain Flat Bone Long Bone R.G.

Martino, president of National Lead Company, and Harry C.

Seduction Department' fll,910..77 . 519,886.71 1/ Darrin Zinc Concentrates sold to Anaconda Seduction forks 1,731.67 Darwin Zinc Concentrates sold to Qreat Tails Seduction Department <-358.53 555,oa.13 . . 902,080.55 8oi Intercompany Sales: Leadline Turns Sold to International Smelting and Refining Company, Lead Befinlng Department 30,697.23 1,808.97 , Tooele Plant Proportion of Profit on sale of Leaded Turn from East Chicago 30,697.23 1.199.50 i, 6,308.17 , Earnings from Customer Tolls: 82 Ore Diverted 91,191.21 161,730.91 >9/ 83 Copper Concentrates 10,5.491.38 , 196,685.59 177 .013.48 Vu^ 338 ,711.12 83 To Others: . 84 - 84 84 - 84 - 84 and Sullivan yinirtg and Concantrator Company Copper Plant Byproduct Sales: American Smelting and Befinlng C <mpany Iron Concentrate Sales: 15,229.57 American Sknaltlng and Befinlng Co^eny Lead Plant Basl&ue Sales: American Smelting end Befinlng Company Premium Payment for Metal e-Lead Slag Dump Zinc Concentrates Lost In Transit to 186,422.69 389,386.79 Anaconda 92.32 Zinc Concentrates Lost in Transit to Great Tails Zinc Concentrate Sales: American Zinc Company of Illinois 50,038.77 Zinc Turns Sales: International Minerals and Metals Corporation .. 1 ,130,860.40 Lsadsd Zinc Oxide Sales to Sundry Custom ers 1,772,030.34 Caomission on Seles of Leaded Zinc Oxide Delivery on Leaded Zinc Oxide Dlaoount on Leeded Zinc Oxide Treight on Leaded Zlme Oxiue Static Bullion Lease Royalty - 74.544,07 Oarried forward:* *- 2,628,978.66 58,599.64 <34.16 \ 34,473.13 A 274,077.51 \ 57.89 \ 166.29 A 8,663.83 1,182,130.47 \ 220.837,50 *a,779,<60.42 i.ioo.0s\ 123.96 A 1,393.29 A 18.662.06 A 25,879.31 ------- 171.180,95 . 3,171,895 .'50 PNYC00000424 i N10099

It maybe that his request for leaded isooctane of certified quality was unjustified.

Faure made a survey of lead poisoning in four lead mines in the Marrakech region.