<J) Ha said this reduction, "...would not be effected until or unless measure ment techniques improved to the point where such levels of lead could be reproducitoly and accurately measured--end at the asm# time, the agency must be convinced that 0.06% lead paint* will produce lead poisoning in the future--and at this time therm la no such evidence.* Sincerely, jrSilm Attachment Jerome f.

of lead, or la the amounts of lead retained la his body* Sate slight * 4`i.* V/.

<J) Ha said this reduction, "...would not be effected until or unless measure ment techniques improved to the point where such levels of lead could be reproducitoly and accurately measured--end at the asm# time, the agency must be convinced that 0.06% lead paint* will produce lead poisoning in the future--and at this time therm la no such evidence.* Sincerely, jrSilm Attachment Jerome f.

So f a r a s an im al exp erim en ts w en t, if- was f i r s t n e c e s s a r y to determ ine whether any of them were poisoned by lead and th e r e a fte r perhaps to determine the v a rio u s p e c u la r it ie s o f th e p o iso n which the v a rio u s an im als show ed.

Lead balance was calculated as dietary lead minus the lead in the feces and urine and did not include an estimate of inhaled lead.

How much lead is in the air?

How much lead is in the air?

How much lead is in the air?

How much lead is in the air?

How much lead is in the air?

How much lead is in the air?

From the viewpoint of a physiological ap- DUP050312604 Nov. mo] INGESTION OF LEAD COMPOUNDS 388 proach to the problem of lead intoxi cation, moreover, the rate of lead ab sorption as compared with the rate of lead excretion is of primary impor tance regardless of the avenue of entrance of lead into the body.

A wide range of these materials are manufactured, but the most significant are the tetra alkyl lead compounds; Tetra methyl lead (TML) and tetra ethyl lead (TEL).

A new use for the various isotopes of lead present in all lead from whatever source is being developed by one of our contractors in order to trace the lead in a particular sample from its source.

, To d e t e r m i n e w h e t h e r t h e o p e r a to r s w ere ru n n in g any r i s k "k A k ' ' V ' o f lead poisoning from th e in iialatio n of lead during the operation of f i l l i n g Jerry^oans w ith leaded gasoline* INVESTIGATION. 1 .BUILDING:- ' "The b u l g i n g :i a ' w hich th e f i l l i n g ta k e s p la c e h a s a cubic c a p a c ity e t 1169 cubic m etres.