Myers - Six bl-nonthly one-peg* flyer* describing specific building Job* using lead, with engineering details of the lead work, should be issued.

Children, like lead workers, may develop abdominal pain, constipation and vomiting.

Gleaning operations lead to liberation of vapour; from the "scale" or "bludge".^* The toxic effects following absorption of tetra-ethyl lead are due to the lead content and are, fundamentally, precisely the same as those of poisoning with inorganic lead compounds.

-i- ** 4,'XW < LEAD INDUSTRIES ASSOCIATION e e as t u eTairr NIW TOM 17, N.

Union Carbide further objects to this Request for Production on the grounds that it is overly broad, unduly burdensome, and is not calculated to lead to the discovery of admissible evidence.

However, audt of the lead in lead products enter* the environment In Inert fora*.

K-drcgcr Lead Co.

In the entire history of the use of leaded gasoline there has never been a case of lead poisoning among the tank wagon drivers, filling station attendants and garage mechanics who have some occasion to come in contact with leaded gasoline or its combus tion products.

Vitamin D caused a decrease in the percentage lead in all groups.

Of heavy paatc whit* lead It u**d.

Instead of .proving lead exposure, have merely proved that the samples analyzed were grossly contaminated with lead from external sources.

United States Patent 4,217,255 Page 3 of 9 r The friction material of claim 11, wherein the synthetic fiber is polyester fiber 13 An asbestos-free and lead-free composition friction material, comprising, by weight, 1 4-3 5% synthetic fiber, 74-82% filler and 16-21% organic binder 14 The friction matenal of claim 13, wherein the synthetic fiber is glass fiber 15 The asbestos-free and lead-free composition friction material, comprising, by weight, 2 7-3 5% synthetic fiber, 74-82% filler and 16-19% organic binder 16 The friction matenal of claim 15, wherein the synthetic fiber is glass fiber Description This invention relates generally to composition type railroad friction matenals and, more particularly, to such matenals which feature the use of synthetic fibers and the absence of asbestos and lead BACKGROUND OF THE INVENTION Most of the composition type railroad friction matenals m use today include asbestos and lead An example of this type of matenal is shown in U S Pat No 3,168,487--Spokes et al Some Kivironmentalists have warned of possible problems caused by the use of lead in friction matenals As a suit, demand has developed for a lead-free friction matenal Examples of some composition fnction matenals which exclude lead are U S Pat Nos 3,492,262--Gnffith and 3,959,194--Adelmann The former patent discloses a composition which has no lead and includes up to 16 5% by weight asbestos fiber, while the latter patent discloses some compositions which delete lead and have up to 11 1 % by weight asbestos fiber More recently, certain environmentalists have pointed out that possible problems may be caused by the use of asbestos fiber in fnction matenals Thus, it may be desirable to eliminate asbestos as well as lead from composition friction materials US Pat No 3,959,194 has some examples which utilize cellulosic fiber in a range of 3 5-8 0% by weight as a substitute for asbestos, although the patent is not concerned with eliminating asbestos in friction matenals Asbestos has traditionally been used in friction matenals because of its high heat resistance and strength and its low cost.

Thompson, Chief Chemist of the National Lead Company.

The output of lead in the wine of your people (as studied thus far) is high and the concentration of lead in their blood is correspondingly high.

I happen also to know of some excellent work on a method of removing the lead from the exhaust.