The chemical analysis showed a high lead content.

Lead chromates are 61& lead.

The lead hazards of these workers vary somewhat * hut are generally similar.

crv N 3025.03 L IA09640 Eaitellie Lead ?

National Lead Co.

I'll quickly show sen* typical use# of lead by soma of these facilities.

LIA0998 5 * LEAD IN DU SIT !

I'll quickly show sen* typical use# of lead by soma of these facilities.

crv N 3025.03 L IA09640 Eaitellie Lead ?

" Lead Pound 0*32 gs* Lead in mgs* per gram of ash 0*05 The absence of lead in the urine indicates the lack of recent appreciable lead exposure* The findings in the faeces are at the lower level of normal results* Thus the lead analyses do not indicate any evidence of oecupational lead exposure* .

Kehoe: At one of our larger plants we have for many years performed urinary lead determinations at one month intervals on all of the lead burners employed at this location.

Most often it involves the use of solder in body manufacture and lead oxide in battery manufacture.

Being concerned with this problem, the major producers of lead alkyl antiknocks, E.

Lead Found Mg.

Jims 7, wm Captain E* L Bergquist, Station Hosptial, Air Corps Advanced Plying 'chool, Kelly Field,: Texas * Dear Captain Bergquistj I have your letter of* June 3rd and will endeavor `to answer your questions to the best of jay ability, 1* ETHYL riilTD contains tetradthyl lead and aa organic iialxd (In the avaition fluid the halid is tftyXensdihroisid, and the proportion of tetraethyl lead to othylsn^-ai-troaid is that theoretically required for complete combination to fora lead brtffldd), la the ocaabustioa* it is boliaved that the tetraethyl lead burns to load oxide and the halids to acid, these tssr then, ccaabining to farm, lead ha34d*, This material is largely volatil ized opt of the cylinder itself and is partially deposited In the exhaust system and partially blows out with the exhaust gases - 2e There is no evidence that there .is any material difference in th chemical reactions in th fuel between axttoasobila motors and air play motors# 3* Tetraethyl lead is oxtremsly easily oxidised and 1 do not believe that there Is ary possibility 'that uritnsrned tetraethyl lead con a arm out of th cylinders* 4* The experimental dote mina^iaa of the quantity of lead in exhaust gases ds^xiremely difficult since, at least* a part of .the load Is tton^very finely divided solid state which permits it to pass through most scrubbing systems.