An lncraar* la tha lead particle alia dirtTi bet lcc c-cxild ba axpactad If agglcmaratlco or *urf*c# retention and scaling vara Increased, whare'i* an extended ton# of high taermrature which sain* talned tha lead c<rp<xuilr In a vapor (tat* for a prolonged parted might raduea tha il:< dlrtrlbutlca.

Lead Compound Keep away from heat and open flame.

EDB and EDC function as lead scavenging agents in leaded gasoline by reacting with lead compounds to form lead bromide and lead chloride.

o determine tbe amount of lead exposure encountered in various places.

Joseph Lead Co.

A proposal several years ago quoted k$400 with no guarantees of airborne lead reduction to OSHA standards. 4.

Moisture Reports Checked moisture percentages to Record of Lead Ore Received,

These values taken as an expression of the level of lead exposure of

The methods used for selecting the population sampled and for determining the lead content of blood have also been previously des cribed.

The ether manufacturers in this group are National Lead* Montgomery-Ward, and Bruder, The National Lead paint is sold at a premium price.

Lead Investigator: John Kornuc (NAVFAC EXWC) Web Site: Not yet available.

Metals Lead: The distribution of lead poisoning is quite extensive.

Lot 2771 for the leaded zinc.

Sectl=PT02&Sect2=HITOFF&u=/netahtml/sea 10/18/2003 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.

The facility manufactures grey lead oxide on-site and purchases red lead oxide from a third party.