F o r a tim e, in the e a rly period of th is rather unique program of m ed ical su p erv isio n , we w ere fa ir ly rigid in our req u irem en ts, sin ce anything that developed in a m an w as altogeth er too lik ely to be blam ed upon tetraethyl lead .

We shall probably never know just how much tetraethyl lead was In the bottom of this tank and underneath it, nor shall we be able to find out just how it got there.

Chronic Toxicity Acrylamide Aldrin 2-Amino pyridine Antimony ANTU Arsenic Barium, soluble Benzene Cadmium, soluble and dust Cadmium fume Calcium arsenate Carbon disulfide Carbon tetrachloride Chlordane Chlorinated camphene Chlorodiphenyl 42$ Cl Chlorodiphenyl 54$ Cl Chlorodiphenyl oxide Chloroform Chromium, metal and soluble chrcmous, chromic salts Cobalt Copper, dust, mist Copper fume Crag herbicide 2,4-D DDT 1.1-Di chioroethane 1.2-Dichloroethane Dieldrln Dimethyl acetamide Dimethyl formamide Dicxane Endrin Hafnium Heptachlor 72 TLV's Hexachloroethane Hexachloronaphthalene Hydrogen selenide Hydroquinone Lead Lead arsenate Lindane Manganese Mercury Mercury, organic Methoxychlor Methyl bromide Molybdenum, insoluble Molybdenum, soluble Nickel, metal and soluble Octachloronaphthalene Pentachloronaphthalene Phenyl hydrazine Phosphorous, yellow Propylene dichloride Pyridine Quinone Selenium 2,4,5-T Tellurium Tet rachloroethane Tet rachloronaphthalene Tetraethyl lead Tetramethyl lead Thallium Tin, organic 1,1,2-Trichloroethane Trichloronaphthalene Trichloropropane Triorthocresyl phosphate Uranium Yttrium OLI 2632 List E* Cancer - Asbestos Benzidine Be ryIlium Coal tar pitch volatiles Chromates, insoluble 2-Naphthylaraine Nickel carbonyl Nit ros odimethylamine beta-Propiolact one F.

Taylor c/o 3rlfcish-Airorlcan Oil Company wonentoa, Alberta, Canada Dear Doctor Taylor: The analytical results on the samples of urine and blood taken from the men who had potential exposure to tetraethyl lead on or about October 12, are enclosed. .a results are within normal Units and would. ndlcate that there had been no recent significant exposure to lead.

Ever since 19 6 1- 3 the admixture of tetraethyl lead in gasoline'has been restricted according to the size of the cities, so th&t the lead in the 'cars* exhausts should not exceed the maximum allowable concentration in g ^ ^ The Public Health Service of the P.R.G, has unfoij|mately not published\ , the results of the lead dust measurements carried out in recent years. \ A The P.H.S, of Oberhausen/Rheln had found an average concentration of \ 0.0025 mg/.m , which was to be expected.

C t- i ') * ~n/. i.h lil l; I HI 1.I S VND RFCjULAT10NS COMMONWEALTH OF PENNSYLVANIA DHPARTMENf OF HEALTH Amendments to Chapter 4, Article 432 -- Regulations Establishing Threshold Limits in Places of Employment* Section 3. paragraph (, is t/.uwgrd to read os follows: C.

In "A Case of Poisonin with Tetraethyl Lead in Well Water" (Ostapenia, et al. *54), it is stated, "Analysis of the water gave 10-15 mg.

O-ethyl 0>(4>(tnethyithio)pbenyll ester Pbosphonothioic acid, methyl-, S-(2-(di- isopropylamioo)ethyl> O-ethyl ester Pbospbonc acid, dimethyl t-(methylthio)pbenyl ester Piprotal Iron pehtacarnanyl Mercuric acetate Mercuric chionde Mercuric oxide Methoxyethylraercunc acetate Methylmercunc dicyanamide Nickel Nickel carbonyl Osmium tetroxide Phenylmercury acetate Plaunous chionde Platinum tetrachionde Rhodium tnchJonde Tellunum Tetraethyl lead Tetramethyl lead Thallic oxide Thallous carbonate Thallods chionde Thallous malonate TfcaUous sulfate Ptnmifos-ethyl PoUiaun arsemte Piixnecarto Pnxboate Pyrlnuml Sodium arsenate Sodium arsemte Sodium cacodylate Sodium fluoroacetate Sodium pentachtarophenate Strychnine Strychnine sulfate Sulfotep Solvents--I Widely used in paints and cleaning materi

Cadmium oxide Cadmium stearate Chromic chloride Cobalt Cobalt carbonyl Ethylmercuric phosphate Gallium trichloride Iridium tetrachloride Iron pentacarbonyl Mercuric acetate Mercuric chloride Mercuric oxide Methoxyethylmereunc acetate Methvlmercunc dicvanamide Nickel Nickel carbonyl Osmium te'roxide Phenylmercurv acetate Plntinous . tilonde Platinum tetrachloride Rhodium trichloride Tellurium Tetraethyl lead Tetramethyl lead Thallic oxide Thallous carbonate Thallous chloride Thallous malonate Thallous sulfate Solvents--6 Widely used in paints and cleaning materials.

It seems to me to be nothing more than a private opinion on the advisability from an economical stand point of prohibiting the import of Tetraethyl Lead into Switzerland.

DON'T SAY IT - WRITE IT TO.

PLAINTIFF'S EXHIBIT USX-1204 Threshold Limit Values for 1958 Adopted at the 20th Annual Meeting of the American Conference of Governmental Industrial Hygienists Atlantic City, April 19-22, 1958 Reprinted from the A.

(ammonium aulfamata) 15 Antimony 0.5 ANTU (alpba-naphthyl-thiourea) 0.3 Araanic 0.5 Barium (aolubla compounda) 0.5 Beryllium 0. 002 Cadmium oxide fume 0.1 Calcium araanata 0.1 Chlordane (1,2,4, 5, 6,7, 8, 8-octa- chloro-3a, 4, 7, 7e-tetra-hydr-4, 7 -m cthanoindane) 2 Chlorinated camphene, 60% 0.5 Chlorinated diphenyl oxide 0.5 Chlorodlphenyl (42% chlorine) - akin 1 Chlorodiphenyl (54% chlorine) - akin 0.5 Chromic acid and chromatea (aa CrO,) 0.1 Crag herbicide (sodium 2-(2, 4-dichloro- phenoxy) ethanol hydrogen eulfate) 15 Cyanide (aa CN) - akin 5 2,4-D (2,4-dicklorophenoxyacetlc acid) 10 DDT (2.2-bia (p-chloropbenyl)-l, 1,1- trichloroethane) 1 Dieldrin (1,2, 3,4,10,10-hexachloro-6, 7-epoxy-1,4,4a,5,6,7,8,8a-octahydro - 1 ,-4, 5, 8-dimethanonapbthalene) - akin 0.25 Dinitrobensena akin 1 Dinitrotoluene - akin 1.5 Oinitro-o-creaol - akin 0.2 CPN (O-athyl O-p-nitropbanyl thiono- bcnxenephoaphonate) - akin 0.5 Farbam (ferric dimethyl dithlocarbamale) IS Ferrovanadium duat 1 Fluoride 2.5 Hydroquinone 2 Iron oxide fume Lead 15 0.2 Lead araenata 0.15 Lindane (hexachloroeydohexane, gamma iaomar) Lithium hydride Magnaaium oxide fume Malathion (O, O-dimethyl dithiophoephata 0.5 0.025 15 of diethyl mercaptoauccinate) - akin IS Manganeee 5.

O-ethyl 0>(4>(tnethyithio)pbenyll ester Pbosphonothioic acid, methyl-, S-(2-(di- isopropylamioo)ethyl> O-ethyl ester Pbospbonc acid, dimethyl t-(methylthio)pbenyl ester Piprotal Iron pehtacarnanyl Mercuric acetate Mercuric chionde Mercuric oxide Methoxyethylraercunc acetate Methylmercunc dicyanamide Nickel Nickel carbonyl Osmium tetroxide Phenylmercury acetate Plaunous chionde Platinum tetrachionde Rhodium tnchJonde Tellunum Tetraethyl lead Tetramethyl lead Thallic oxide Thallous carbonate Thallods chionde Thallous malonate TfcaUous sulfate Ptnmifos-ethyl PoUiaun arsemte Piixnecarto Pnxboate Pyrlnuml Sodium arsenate Sodium arsemte Sodium cacodylate Sodium fluoroacetate Sodium pentachtarophenate Strychnine Strychnine sulfate Sulfotep Solvents--I Widely used in paints and cleaning materi

IS Sulfuric acid 1 TEDP (tetraethyl dithio'nopyro- phosphate)- skin 0.2 TEPP (tetraethyl pyrophosphate) - skin 0.05 Tellurium 0.1 Tetryl (2,4, 6-trinltrophenylmethyl- nitramine) - skin 1.5 Thallium (soluble compounds) 0.1 Thiram (tetrarnethyl thiuram disulfide) . 5.