Document 4Q4XpnG12njjL0Kd4aG1QeyqR

AMERICAN SMELTING AND REPINING COMPANY LIBRARY Research Department South Plainfield, New Jersey BULLETIN ON ASBESTOS PUBLICATIONS No. 39September I960 179. U.S. Bureau of Mines Bureau of Mines will continue asbestos research program Supplement to Mineral Market Report MMS 3079 (July 25, I960) Efforts to produce a synthetic asbestos will be continued in the fiscal year beginning July 1, I960. 180. Clark, S.G. & Holt, P.P. Dissolution of chrysotile asbestos in water, acid and alkali Nature 185. 237 (I960) This is a very brief report on work done in connection with asbestosis research. It in dicates that asbestos solubility is greatly increased by alternating acid and alkaline conditions. l8l. Whittaker, E.J.W. Crystal chemistry of the amphiboles Acta Cryst. 1^, 291-298 (i960) Theoretical article on the crystallography of the araphibole minerals which include amosite and crocidolite. 182. Bldg. Sci. Abst. 96 (Mar. I960) Klein, R.L. Use of asbestos-cement pressure pipes in water-supply practice Water & Water Eng. 63. 356-365 (1959) I ASARCO ALV 0001434 I -2 183. Wilkinson, C.E. (to Texaco, Inc.) Coating compositions and coated structures U.S. 2,939,794 (June 7, I960) A fire-resistant coating of asphalt, solvent, mica, Vfermiculite, alkali metal tetraborate, and 5-15$ asbestos is claimed. 184. Maser, Horton; Rice, Robert V.; and Klug, H.P. Chrysotile morphology Am. Mineral. 45. 680-688 (June-July i960) Fiber bundles of a silky Transvaal chrysotile were embedded in epoxy resin and then sliced with a diamond knife. Electron microscopy showed rings with central holes and concentric tube arrangements. 185. Evans, E.F. & Jackson, D.E. (to Du Pont) Dispersions of organic polymers and chrysotile asbestos, process of preparing film therefrom and product thereof U.S. 2,945,831 (July 19, I960) A small quantity of asbestos is added to aqueous dispersions of polytetrafluoroethylene or polyacrylonitrile to keep cast films made from them free of cracks. 186. anon New tentatives and standards ASTI! Bull. #247, 31-33 (July I960) In the asbestos cement field the following tentatives were accepted at the annual meeting: C458-60T. Test for organic fiber content of asbestos-cement products. C459-60T, Sampling and testing asbestoscement flat sheets, roofing and siding shingles, and clapboards, C460-60T. Terms relating to asbestos-cement and related products. 187. SchjBdt, R. Measurements of human reaction to hardness of floor covering ASTM Bull. #247, 53-56 (July I960) An article from the Norwegian Building Research Institute reports tests attempting to correlate floor covering hardness with muscle activity in walking as measured by an electro myograph. One of the materials used was'vinyl asbestos tile laid over wood or concrete, ,I ASARCO ALV 0001435 3 188, Martinez, Edward & Zucker, Gordon L, Asbestos ore body minerals studied by zeta potential measurements J, Phys. Chem. 6k. 924-926 (July I960) "" The zeta potentials of chrysotile and lizardite were measured using the streaming potential method in an attempt to characterize their surface properties. This study was supported by American Smelting & Refining Co, 189, Monthly Index of Russian Accessions 13. #4* 1197 (July I960) Lobanok, V.F, Make wider use of asbestos ballast Put i Put. Khoz. (Railroad Tracks and Roadway Maintenance)' 1959. #11, 5-6. 190. Monthly Index of Russlan Accessions 13. #4* 1212 DiomidovP', & Volegov, A.V, Efficient recovery of short-fiber asbestos in core mills and cam crushers Izvest. Vys3hlkh Ucheb. Zavedenll. Gonyi Zhur, (Bull'. Inst. Higher Learning, klning J.) 1959. #2, 137-144 191, Z.D.A. Abst. 18, #7, 125 (July i960) Robertson Thain Ltd. Galbestos protected metal (cl960) This material is intended for fireresistant roofing and siding and is made by first pressing an asbestos felt onto a sheet of zinc-coated steel and then im pregnating the asbestos layer with a bituminous composition. 192, Z.D.A. Abst. 18, #7, 136 (July I960) anon Pitched roofs (in French), Paris, Association HLe Toit", 1959. 33PP A pamphlet describing roofs of aluminum, asbestos cement, copper, galvanized sheet, lead, tiles, and zinc. ,I ASARCO ALV 0001436 ~4` 193. Asten, D.V. & Schoepf, J.G. (to Asten-Hill Mfg. Co,) Asbestos dryer felt U.S. 2,947,328 (Aug. 2, I960) A paper-making felt is claimed with a top layer of yarn spun from asbestos and polyester fibers. 194* McCluer, John D. (to Thermoid Co,) Flame retarding composition and fabric treated therewith U.S. 2,948,641 (Aug. 9, I960) Patent covers an asbestos fabric treated with a fluoborate salt, mica, and a plasticizer. 195. Sinclair, W.E. Asbestos in the chemical industry Asbestos 1x2, #2, 2, 4, 8, 8 (Aug, i960) The amphibole varieties of asbestos are recommended for their resistance to acids and alkalies. 196. anon Improved type cf hammer mill Asbestos 1x2, #2, 10 (Aug. i960) Short description of the "Fiberok" mill manufactured by Barberton Iron 8c Steel (Pty.) Ltd., Barberton, Transvaal, 197. APCA Abst. 6, #2, 1 (Aug. i960) Bfthme, A, Asbestosis and lung carcinoma Arch. Gewerbeoathol. u. Gewerbehyg. II, #4, 364-39^ (19597 (Berlin) 198. Brit. Plastics 21> #8, 348-361 (Aug. i960) Plastics in missiles This survey consists of the following sections: 1. Introduction to current uses of plastics, by D. V. Rosato 2. Thermal and strength requirements for reinforced plastics, by A. W, Wilson 3. Insulation and heat shielding applications, by Julius Hertz 4. Some problems of nozzle design, by Max A. Nadler I ASARCO ALV 0001437 -5' 5, Materials for nozzle insulation by Edward M. Gilchrist 6, Filament winding for radomes, by W. J. Colson 7, Controlling materials for missile construc tion, by Morton Kushner Parts 1 and 2 outline the general requirements for use of plastics in rockets and missiles. Parts 3 to 7 present special problems and are based on papers given at a convention on missilessponsored by the Society of Plastics Industry, in California, The first five articles include references to asbestos-filled phenolic materials. 199. Chem. Abst. %k, I5l22f (Aug. 10, I960) Peng, Lui Origin of asbestos deposits of Shui-Tsing-Po, Peng-Shien, Szechuan, Ti Chih Lun Ping 19, 497-503 (1959) 200, Chem. Abst. J2k, I5l31e (Aug. 10, I960) Kuman, V.E. Genesis of amphibole-asbestos in Precambrian ferruginous and siliceous formations; perspectives for the presence of amphibole asbestos deposits in Krivoi Rog Doklady Akad. Nauk S.S.S.R. 131. 161-163 (I960) 201, Coe, B.P, Silicones solve problems Chem. Eng. 6J, #17, 156, 158 (Aug. 22, i960) This G,E. article points out a few miscellaneous uses for silicones, one of which is a spray coating of silicone rubber on a removable asbestos insulating blanket in order to improve its resistance to mechanical handling and chemical attack. 202, anon "Beater saturation" exhausts Teflon onto lSl}6St/0S Chem, Eng., News ^8, ,#33, 64 (Aug. 15, i960) A short note about Armstrong Cork Co,*s "Fluorocarbon Accopac" asbestos sheet material with electron micrographs of Teflon-asbestos mixtures. ,l ASARCO ALV 0001438 -6 203. anon Asbestos: general, production, processing. Part 20. Gummi u. Asbest 13, 6l6, 6l8, 620, 622, 624, S2UIZ2B (3^i7T9So5 Section 20 is a continuation of the last article on asbestos-filled plastic materials. 204. anon Asbestos-rubber sheet resists acids, solvents Materials in Design Eng, *>2, #2, 185-186 (Aug. i960) Heasbey St Ilattison Co, is making a gasketing material based on Hypalon which is resistant to acids, alkalis and solvents. 205. U.S, Bureau of Mines Asbestos Mineral Trade Notes 5l ir'2, 9-13 (Aug, I960) Pour pages of this article are devoted to information on asbestos production in the Federation of Rhodesia and Nyasaland in 1959. The last page presents world statistics for 1955-1959. 206. Vassallo, P.A. and others Structural and insulative characteristics of ablating plastics SAE Preprint 1680, presented at the SAE National Aeronautic Meeting, New York, April 5-8, I960. Abstract in SAE J, 68, #8, 6 (Aug, I960) Research at""Cornell on glass- and asbestosreinforced laminates sponsored by Wright Air DeveloDment Center. It was also reported in WADC TR59-368. 207. Mobilia, J.J, ~ Rosato, D.V. Reinforced plastics in missiles and rockets SPE j. 16, iJ-8, 949-952 (Aug. I960) The wide range of plastic materials, rein forcements, and fabricating techniques is described briefly and'related to the many possible end products. lk 9/1/60 Hi McBride I ASARCO ALV 0001439