Hood (2 ) - January 31, 1957 manufacture of tetraethyl lead.

The quantities of lead Involved here are in the neighborhood of two and a third milligrams per day* I should suspect that the greater portion of this would pass through the alimentary tract unabsorbed* On the other hand, the figure Is suf ficiently close to the son of recognized ddnger In occupational exposure that I do not regard the results as wholly predictable.

As a matter of fact, 1 am entirely certain from our enormous body of data that it is quite impossible for individuals to absorb significant quantities of lead as the result of their contact with gasoline containing the commercial concentrations of tetraethyl lead.

The usual range of the concentration of lead in fresh vegetation of the type represented in the first seven of these samples is N 5325.01 s V Mr.

moas/a2 where D -infc dla. of pipe In Ins. 6.5 x B 20562003 BFG03963 APPENDIX: Present: BS.35C5 Requirements:1 Hour Prewashing 1st extract* on -lead content must not exceed 4 agms/ra^ 3rd extraction -lead content must not exceed 1.5 mgms/m* Future amendment:6 Hour Prev3h*ng On average of 3 results. 1st extraction -lead content must not exceed 6 mgms/m2 3rd extraction -lead content must not exceed 1.5 mgms/m* BfG0^64 20562004 20562005 3td Extraction.

We have seen one Instance in an adult and several in children, in which a patient with a high blood lead concentration was unable to secrete a high con centration of lead in the urine.

Sent under separate cover: THE HARBEN LECTURES, 1960 - /*-}*> Value of calcium disodium ethylenedisminetetraacetate and British anti-lewisite in therapy of lead poisoning Methods for Determine Lead in Air and Biological Materials Occupational Lead Exposure and Ledd Poisoning

Leake and which I have good reason for believing were not due to lead, are the only cases associated with the handling of leaded Dr* R R* Sayers -2 gasoline which in any way resemble or could be confused with lead poisoning* The cases occurring among tank cleaners, with two exceptions, have demonstrated quite definitely the magnitude of their lead absorption in that their lead excretion has been found to be many times that of normal individuals* I have taken the troxible to mention these cases which I will describe to you in detail later, because the man in Boston has been seen by several Eastern physicians and the matter may be brought to your attention.

Biol, of MftoOregor Lead Cnfsay.

Limited; National Lead Company of Ohio; National Lead Overseas Corp.; National Starch and Chemical Corporation; Pioneer Aluminum Inc.; R-N Corporation; Southern Screw Company; Societe Industrielle du Titane; The Chas.

nation of these m@a is on adequate means of main taining hygienic* control* On the other hand from tine to tine over a period of years, wo have selected a group of these non and have studied their urinary and fecal lead excretion with the idea, of determining whether they trera absorbing abnormal amounts of lead* 2'believe X have sent you reports of the" results of the??

DUTCH BOY WHITE -LEAD NATIONAL LEAD COMPANY III Broadway, New York; 116 Oak St., Buffalo; 90d West 18eh St.,' Chicago; 659 Freeman Ave., Gadhaad; 820 West Superior Ave.

Metal poisoning, usually lead or arsenic.

To return to compliance you must: Submit certification of distribution of lead consumer notices for lead monitoring results at each location where a sample was collected.

Paul, we used to have an average of thirteen or fourteen cases of lead intoxication a month.