' Concerning Leaded Gasolines December 8, 1933 Gentlemen: , There has been some controversy in our organization relative to the use of leaded gasolines.

.^ lead (2) Fresh Sludge Sample Boot, Pennsylvania 1.5^o lead (3) Pipe Line Sludge from V/aste Pile Kontello, Pennsylvania 0.3*# lead (4-) Fresh Sludge from Sediment Trap Montello, Pennsylvania lead ^ The amounts of organic lead in all of the samples were lesHT than 0.00235&* The amounts of lead in all of these samples were less than amounts found in many samples of sludge and scale, but until vie have more information on the behavior of small percentages of lead in mixture with iron rust, I would recommend that precautions similar to those in cleaning tanks be taken when the sludge traps are cleaned.

Ware, EzeeutlTe Researeh Director Representing Aeme White Lead and Color Works C.

Feces Analysis Ho. 38A-353I Lead Found 0.39 mgs* Lead/100 gms dry sample 3.61 mgs* Lead/gm.ash of sample 0.18 mgs.

Joscnh Lead Company 1934.. . 1935-. . 1936 . 1937.. . 1938

Rather what we have been attempting to do is to show the level of lead absorptions which result in lead poisoning.

The permits will only be granted if the application contains the following par ticulars: an indication of the place where the mixing is to be carried out and a list of the names of the workmen selected for this purpose and reports on their medical examination as referred to in Article II11. 2) The maxirouxa tetraethyl lead content for commercial gasoline will be ljl,2SQ by volume of commercial tetraethyl lead or 1:1,300 per Pb (C2H5) 4 0 ?

RED LEAD TECHNICAL LETTER WO. 13 * To Nesfcert of the Lead Industries Association!

That lead poisoning should]'till!

3) Mixing may only be effected mechanically in well ventilated places and a suffi cient stock of tetraethyl lead must bo carried to effect the mix.

In the p a s t white lead p a in ts were u sed , and v a rio u s leaded m a t e r ia ls , in v ario u s ways.

RED LEAD TECHNICAL LETTER WO. 13 * To Nesfcert of the Lead Industries Association!

EAGLE-PICHER 134 North LaSalle Street, Chicago A White Lead, Carbonate Sublimed Blue Lead Red Le: Super Sublimed White Lead Sublimed White Lead Litharge Orange Mineral Sublimed Litharge Lithopone Zinc Oxide WHAT OF 1930?

mentation ding the upper left molar, may be lead line but Is ques* .

The lead present in this weight of sludge, as tetraethyl lead, is 1.5 grams based on the 0.006?