Document kDEmkG0mKqwrewk2aOpOmz61b

PLAINTIFF'S EXHIBIT ASBESTOS Vol.2. BULLETIN No.3. - May, June, 1961 Editor C.Z. Carroll-Pcrczynski. C 0 IT T 1 MINING ......................................................................................... 2 ASBESTOS-CEMENT....................................................................... s -*/ ASBESTOS TEXTILES.................................................................. `T .-bo^oi-Jbt o k*\ r --.--\ "pi'll"" T C7 ................... 5 ^71^70,^771 77.' 77-T 7 XL--/ J_ J. V Oilw1 -i iM -- <*.*. -L. ^ * < 4 t g ASBESTOS JOINTINGS, SEALING AND COATING COMPOSITIONS........................................................................... 7 PUT STIC MATERIALS AND PIPES.......................................... 8 ASBESTOS PAPER AND INSULATING MATERIALS. . . . 9 REFRACTORY FIBRES.................................................................. 10 MISCELLANEOUS........................................................................... 11 REVIEW OF JOURNALS age 74 73 88 89 90 92 o -- 93 94 <6 96 (C) Copyright, Astex Publishing Co., 1961. i i ASARCO ALV 0006413 ASBESTOS bulletin 74 part 1. MINING PANADA 305 ASBESTOS. W.J. Bichan. The Mining Journal May 1961, Annual Review. "Murry Mining Corp. reserves of asbestos ore in Northern Ungava now estimated to be more than 20,000,000 tons." "The entry of Lake Asbestos in Canada and the impending supply from Advocate Mines Ltd., has placed a premium upon quality of fibre shipped." "It is reported that Newfoundland deposits are free-milling, separate readily from the rock and shew a minimum of adherent dust and magnetite." The article is concluded with a statement that "the traditional supply of asbestos from the Eastern Townships of the Province Quebec will lose in importance as certain markets are rapidly taken over by Newfoundland and other northern suppliers." 306 ASBESTOS PRODUCTION MAKES RECORD IN CANADA AS RUSSIA SEEKS LEAD IN OUTPUT. Karl V. Lindell. Mining World, 1961, 2^, No. 5, p. 69. A short annual review article. i~ ' BRITISH COLUMBIA 307 AS3E3T0S DISCOVERIES. Can. Mining J. 1961, 82, No. 4, p.156. Four of seven peridotite bodies located by Geological Survey of Canada in I960 field work carried chrysotile asbestos. The loca tions of discoveries are as follows: 1. On Sinkut Mountain a small amount of slip fibre was noted. 2. On Bobtail Mountain between elevation 3,700 - 4,200 ft. cross fibre asbestos with fibre length i to -g- inch occurs in veins - up to 3 ft. long; these veins are widely spaced for the most part, but in one place four such veins occurred in a distance of 2 ft. 3. On the west side of Telegraph Range cross-fibre with a length up to occurs in veins 2 to 3 ft. long widely distributed for a- mile across the width of peridotite body. 4. At a point of 6 miles, from Baldy Hughes Mountain about 25 miles south-west of Frince George, fibres l/l6 long were observed. ASARCO ALV 0006414 75 ASBESTOS 3ULLETIN 308 ASBESTOS. Can. Min. & Met. Bulletin, 1961, 5, No.586, p. 215. Income from production of Cassiar Asbestis Corp., ltd., during fiscal year ended September I960 was the highest on record. Net profit after all charges was J2 2,353,586. The outlook for future sales ia satisfactory. No work was done during the year on the high-grade asbestos deposit on Clinton Creek, Yukon, but the pros pector's interest, was purchased for cash and the property is now wholly owned by Cassiar. Reserves of 5 million tons of ore have been established. Another prospect, the letain asbestos property is held by the Kutcho Creek Asbestos Cc., Ltd., which Company has issued 750,005 shares cf its capital stock of which Cassiar ov/ns 730,005. MANITOBA -r.c MINERAL BROSPECTS I) GOBS 5LA , AND OXFORD LAKES ivIANITOj^-.. G.o. w rry. Can. mining ., 1961, 82, No.4, p.S3. Mention is made of poor quality asbestos found in serpentinized peridotite bodies north of Knee Lake, in the Carrot River area '.vest of Oxford Lake, and at Island Lake. NEWFOUNDLAND 310 NEWFOUNDLAND1S MINERAL INDUSTRY I960. Mining J. , 1961, c2_, No. 4, p. 80. -jehnsten. Can. Near Baie Verte on the advocate mines concession production of asbestos is planned by mid-1963 of 3000 tons per day. Prior to last September official, reserves had been stated at 21 million tons of ore averaging 3.68# 4D fibre, plus 2.5f shorts to a depth of 450 feet. Recent statements reveal that more than 35 million tons have now been outlined. The location of the de posit practically at tidewater is well-suited for the proposed shipment of fibre to Europe and to points on American continent. 311. ASBESTOS LABORATORY AT UNIVERSITY OF SHERBROOKE: Can. Mining J. 1961, 82, No. 5, ?. 98. The announcement of the establishment by Quebec Asbestos Mining Association laboratory, which will provide technical and research facilities for Eastern Townships asbestos mines. -1 ! ASARCO ALV 0006415 mH*<a asbestos bulletin 312 AIR SEPARATORS IN ASBESTOS INDUSTRY. Can. inning J. 1961, 82, No. 5, p. 74. A brief note on Sturtevant Air Separators installed by Canadian Johns-Manville Co. U.S n 313 JEFFERSON LAKE FLANS CALIFORNIA ASBESTOS MINE. Minin? World, 1961, 23, No. 6, p. 17. News item about the nine and mill to be built in Calaveras County to handle 2500 tons per day. 314 U.S TENT 2,968,400. COLLECTOR. Clut This patent describes an apparatus by which progressively lighter fractions from comminuted asbestos ore are discharged from the airborn stream. U.S.S.R. 315 I960 production in-the U.S.S.R. increased with relative rapidity as several new centres were opened up. The estimated total exceeds 1,000,000 tons, (extract from The Mining Journal Yearbook May 1961). 316 U.S.S.R. PATENT 136,523. TREATING BRITTLE CERYSOTIIE ASBESTOS WITH KCU. I.N. Kusimin, I.G. Kamenshchikov & 13. P. Ovchinnikova. ARGENTINA 317 Asbestos deposits of ever 100,000,000 tons have been located in La Rioja according to Rheinstahl-Planung. Foreign technical and financial aid is being considered, (extract from Mining J. *<ily 1961 Annual Review). A St / t ASARCO ALV 0006416 -Jsmrr- 77 ASBESTOS BULLETIN BOLIVIA 318 I960 export of asbestos amounted to 60,028 kg. (extract from Mining J. 1961, 296, No. 6564, p. 662). CYPRUS 319 Cyprus Asbestos Mines exported a total of 15,328 long tens of asbestos in I960 (14,4 in 1959). Known reserves are sufficient for more than 100 years of operation at the present rate cf pro duction. (extract from Mining J, May, 1961: Annual Review). bwUliurL. 320 SOUTHERN RHODESIA'S MINERALS. The Mining J. 1961, 256, No. 6563, p. 62i. An outstanding feature of the asbestos industry has been the activities cf a company operating a factory which blends fibres purchased from a number cf mines. Its products have secured a good market in a variety cf countries, particularly behind the Iron Curtain. These operations have materially assisted the struggling mines and the responsible company has established markets in Boland, CzekhSlovakia and India. (complete extract). 321 TAKE OVER. The Mining J. 1961,n256, No. 6563, p. 624. Management and technical control cf 2 'operating asbestos mines in the Gwanda area of Southern Rhodesia have been taken by Rand Mines of the Union of South Africa. Rand Mines are also understood to have an option on the Alpha, another asbestos working to Thcrnwocd and Beta. 322 OPERATIONS AT THE ETHEL AS3EST0S MINE, SOUTHERN RHODESIA. N.M. Airey. Inst. Mining Met. Trans. 1961, 70, No.,7, p.407413. Description with flowsheets of the new crushing and milling plants which have been operating since 1959? supplements a comprehensive article on this mine published in 1956. 1 1 ASARCO ALV 0006417 asbestos bulletin 78 AUSTRALIA 323 In We stem Australia the capacity of the mill at Witenoon has been increased to 25,000 short tons. The I960 output is expected to reach 16,440 short tons, production of chrysotile, mainly in New South Wales will be about 1,430 short tons. Prospecting has shown attractive deposits of good fibre, but there has been no activity in their development, (complete abstract from Mining J. May 1961). 324 WESTERN AUSTRALIA AND ITS MINERALS. G. Spencer Compton. The Mining Magazine, 1961, 104, No. 3, p. 151* The asbestos of Western Australia is mainly crocidolite. Produc tion has passed beyond the A 7,000,000 mark, with annual figures now in excess of A 1,000,000. Information to hand indicates that steps are being taken to build up a bigger annual turnover, to im prove transport and communications and to make ~he area and condi tions more hospitable fer staff and workpeople. NORTH VIETNAM 325 Asbestos mining is reported at Quang-Yen. Mining J. May, 1961, Annual Review). (extract from NORTH BORNEO 326 Asbestos and chromite deposits have recently been dis covered in North Borneo and investigations are now in progress. The Mining J. May 1961, p. 91. PART 2. ASBESTOS-CEMENT. 327 ASBESTOS-CEMENT PIPE PLANT. A. Hegarty. Mining Mag. 1961, 104, pp. 152-155. Description 'with pictures of the Johns-Manville automated continu ous process asbestos-cement pipe plant at Denison, Texas. \ ASARCO ALV 0006418 -''SC 79 ASBESTOS 3ULLETIN 328 TECHNICAL-ECONOMIC PROBLEMS IN THE DEVELOPMENT OF THE CEMENT AND ASBESTOS-CEMENT INDUSTRY. V.E. Shneidc-r. Zhur. Vsesoyuz. Khiia. Obshehestwa im. D.I. Mendeleeva. I960, 5, 2, pp. 221-23. Data on the size of the industry in the U.S.S.R. and other coun tries and the course of growth of the industry are presented. The gap between supply and demand in different parts of the Soviet Union is given as well as the output of different types of.plant. 529 TECHNOLOGY OF A uc-^rririOiUo-- pP^.TuiTjTvr'i-T*Q-1* bird Edit on N.r. Soholev. Moscow, C-osudarsx. Izdatel Stroitel ) i960; 395 pages ! PRODUCTION OF J. J Halk-Gips, 1 G561, 1'./- V" ;.c A factory producing sbestcs-coment pipes wii be erected in t Madrid; 2l00 t. of sfcestcs will be imported early. t 1{ HOW WE ARE FIGHTING CORROSION. H.D. He 11owav & I, 7/. 1 McSradden. Oil Gas Ji 1961, 59, No. 22 , *c-- u^o--a*--o , 50. The authors report on materials for handling oil well brines at Pan American Petroleum Corp. Asbestos-cement pipe is mentioned, but its tendency to clog with scale is also noted. 32 REVOLUTIONARY HEATING SYSTEM - ELECTRICAL POTENTIAL APPLIED TO REINFORCING FABRIC. Wire & Wire Prods. 1961, 35, pp. 614-615, 658-661. The steel wire reinforcing fabric of a building in Minot, North Dakota, is to be used as an electric heating element. Asbestoscement board to insulate the overlapping ends of the mesh from each other. BUILDING ASBESTOS-CEMENT PANEL HOUSES. R. Abramova. Strci. i. arkhit. Mosk. 1961, 10, No. 2, pp. 33-35. i ASARCO ALV 0006419 asbestos bulletin 80 334 NEW EQUIPMENT FOR PREPARING OF ASBESTOS-CEMENT SLURRY. G.K. Snegireva. One of the first stages in the manufacture of asbestos-cement products is the opening of asbestos fibre bundles, or fiberization of the material. ' As a rule, a wet method is employed for this purpose in order to minimize damage of the fibres. The most common machines in the fibre preparation department are edge runners and hollanders. These machines, however, are only periodically employed, consume a great amount of power, occupy a large space, and have a relatively low production capacity. In order to improve this process, it was decided to design a new equipment which could treat the material automatically and in a continuous manner. This development work was assigned to Leningrad Scientific Research Machine Building Institute (VNI-IS) and PKB Asbestos-Cement Research Institute (PKBNIT). This newly developed asbestos-cement preparation process is shown in Fig. 1. As may be observed, several grades of asbestos fibres are being discharged on to the conveyor, which delivers the material in a continuous manner to a blade type mixer where various types of fibres are thoroughly blended. From the mixer, the asbestos is transferred to the main hopper feeder, which weighs the material, and also controls the speed of the conveyor belt. In the next step, the blended material, moistened by a water spraying equipment, passes to the crushing rollers (Fig.2). Here the fibre bundles are subjected to a progressive softening treat ment by two sets of vertical rollers, which rotate in opposite directions. The average output of this machine is about 2.5 tons i i ASARCO ALV 0006420 81 ASBESTOS BULLETIN per hour. The diameter of the rollers is 400 mm., their length 500 mm., the surface speed 5 metres per second, and the roller's pressure from 30-50 kg,/cm. From the crusher, softened material is passed to the pulp pre paring machine -where it is mixed with water to 2.5/* concentration. At this stage a final fiberizing of previously softened fibre bundles takes place. The p-ulp preparing machine (Fig. 3) consists of a revolving rotor fitter with 12 blades. The machine cover has an slipticai shape which ensures tha-b ail thrown off stuff is gently returned for further treatment. The capacity of this machine is about 1500 klg/hour. the dia- :eter of the rotor is 800 mm., its length 2000 and number of revs, per minute between 200 - 320. The gap between the rotor and the stationary bottom blades can be adjusted within 0-10 mm. . The suspension thus prepared (2-3? asbestos and cement) is then delivered to a vertical cylinder-stirer having three rows cf blades fitted to its walls (Fig.4). The shaft cf the cylinder is also fitted with blades. Here the asbestos-cement suspension is subjected to. vigorous stirring and vertical flew movement, effected by blades. The output of this machine is 60m' per hour with the slurry concentration between 13-11?=. The diameter of the mixing chamber is 350 mm. From the mixer the asbestos-cement slurry is continuously supplied to the scoop agitator. The overall capacity of this new automatic preparing section is 1.5 tons of asbestos and 10 tons of cement per hour. A complete installation of this type passed evaluation stages at the Kramatorsk Asbestos-Cement Works. i i ASARCO ALV 0006421 ASARCO ALV 0006422 ASBESTOS bulletin 84 335 3.?. 860,088. IMPROVED ASBESTOS-CEMENT PIPE MAKING MACHINE. Mannesmarm Aktiengesellschaft. It is claimed that this machine differs from known machines by virtue of the construction of its various units, their arrange ment and their manner of operation. At the same time the machine bas the advantage that because of its simpler construction it can be manufactured more economically than the known machines, without introducing losses in output or quality. In this machine the material to be applied to conveyor 3, issues from a container (1) and feeding mechanism (2) the front wall of which is formed by a vertically and horizontally and adjustable baffle roller (4). The vertical position of the latter controls the thickness of the layer of material to be applied to the c-elt. Under feeding mechanism. (2), the supporting plate (El) is provided in order to support the belt in the region where it is subjected tc the greatest load and also tc prevent a too rapid penetration of water from the mixture through the felt belt (3). The gap (18) between feeding point and commencement of suction by suction box (15) is provided in order to prevent the fibres from being -depositee in the undesirable direction. The suction boxes (16) and (17) are operating at a gradually increasing vacuum so that the vacuum reaches a maximum value only when it is no longer possible to cause the fibre tc settle cut. At the end of the conveyor run, there is provided a pipe core (19) associated with a belt roller (36) below it, running on rol lers (21), (28) and (31). The pipe core together with pressure rollers (21) shapes the material to form pipe on the core. The rollers (21) are carried by a carriage connected to a pressure cylinder (22) via a piston (23). The pressure rollers (21) can thus be applied substantially independently of the tensioning and guiding means for the belt (36), the manners of application being chosen to suit the consistency and/or the nature of material. SSBl ASARCO ALV 0006423 85 ASBESTOS BULLETIN The belt (3) returns by way of a belt cleaning mechanise which consists of an inner row (37) of spray nozzles, a belt beater (38) and a further outer row (37) of spray nozzles. 336 PRODUCTION AND APPLICATION OF CONCRETE, REINFORCED CONCRETE AND ASBESTOS-CEMENT PIPES. M.V. Von Ritter. Beton- Kerstellung u. Verwedung I960, 10, No. 6, pp. 245-255* 3.P. 866,863* APPARATUS FOR MANUFACTURING ASBESTOS-CEMENT. A. Magnani. OF Apparatus for manufacturing asbestos-cement sheet collects from a vat and dewaters an aqueous slurry by means of a heller; c rming cylinder ever which travels an endless felt, the cylinder sing provided cn its surface with axially extending ribs and a action source. 338 U.S. PATENT 2,9*6,158. Keasby and Mattison Cc. iPOSITE BUILDING SIBUCTURI The sheet formed from pcrtlond cement, dia temite and a. s bo- st os fibre is cured and coated with a slurry of lime and laxomito and autoclaved to react the lime and diatomite 339 '.THERE IS A3S HEADED? Mod. Plastics 1961, 38, No. 6, pp. 82-86, 156, 158, 160-161. Acrylonitrile-outadiene-styrene uses a.nd future are discussed. One section of the article compares its cost with that of asbestoscement for municipal water pipe. 340 DUTCH PATENT 89,385* (Nov. 15, 1958). REMOVING TALC FROM ASBESTOS FIBRES. N.V. Eternit voorheen eerste Nederlandse Fabriek van Asbest-cementplaten "Martinit". i i ASARCO ALV 0006424 ASARCO ALV 0006425 asbestos bulletin ea PART 3. ASBESTOS TEXTILES. 341 TITAN GETS ABLATIVE SKIRT ON 2nd STAGE. F.G. McGuire. Missiles & Rockets 1961, 8, No. 19, p. 22-23. Aero-get-General Corp. , developer of all Titan engines, disclosed the construction of a "new skirt" enabling the engine to ignite without the presence of fuel in the regeneration-ccoling tubes of the chamber wall and the possibility of leakage causing an explos ion. One of the photographs shows wra-pping of asbestos tape, preimpregnated with phenolic resin, on the aluminium mandrel. 342 PATENT 607,089. Dryers Ltd. Li r* * The construction embodies asbestos-nylon reinfc icana TTTi YV' 34; 53ESIVE BACKED ASBESTOS TAPE J.I.I. Packing & Text. Div. roduct me. Anril 2-ith 1961, 86. See also April ICth >. 51. Adhesive backed asbestos tape is available for services up to 500F. in commercial grades and up to 900V'F. in 0X1:61' ]T0.dSS. Use in unsupported structure, however, is limit cd to 275CE. point at which adhesive begins to lose strength. Supplied in thickness of 0.002, 1/32, 1/16 and -f ins. and in widths - 6". Tapes under 1/16" are furnished in 50 ft. rolls, others in 25 ft. rolls. 344 CAN. PATENT 605,799- PAPERMAKERS DRYING FELTS. Astc-nHill Ltd. The warp of surface ply comprises essentially yarn spun from a homogeneous blend of polyester (20-25$) and asbestos fibre (75- 80$). 345 SPINGARD SPINNING FRAME. Messrs. Gardella of Genoa, Italy announced that their new high speed (up to 7000 r.p.m. ) -asbestos spinning frame is now available for inspection to interested parties during normal working in one of the spinning plants. ASARCO ALV 0006426 89 ASBESTOS BULLETIN FART 4. ASBESTOS FRICTION MATERIALS. 346 NEW BRAKE LINING MATERIAL. Iron Age, 1961, 187, No. p. 15. J Fowdered-ijietal brake linings for passenger cars will soon make fheir debut. The prime feature of these linings is that they ore made entirely of powdered metal. It's bonded directly on the brake shoes without using any asbestos or asbestcs-metal combina tions. Advantages include: Less pedal pressure, faster steps, longer lining life, better heat dissipation, no squeaking and a reduction in the number of adjustments needed, (complete abstract). I 1 MOULDING MATERIAL ?0: 38, No. 9, p. 410. nx.Tr'-v -- 'TT-ip sties, 1961, An asbestos fibre-reinfcreed pihenolic moulding material with high heat resistance has been cevel oped by Rogers Ccrp., Rogers, Gown. 5 for use in brake applications. Called RL 415, the material, producea by the beater-addition m.ethod for homogeneous blending of fibre and resin, is easily mmoulded into flat or three-dimensional shapes. It is claimed to haye successfully replaced fs.bric.ated laminate for Textile brake pads with spindles rotating at 2C.000 rpm at a torque of 20 in. pe r ounce. (c omplete abst ract). . 348 CHARAOTZRISTIC G C7ERNING THE FRICTION AND V/EAR 32HA 0? REFRACTORY MATERIALS FOR HIGH-TEMPZRATURE SEALS BEARINGS. L.3. Sibley and others. Battelle Memcri Columbus, Ohio. Report 57 pages. Various ceramic and cermet materials have been evaluated for unlubricatea wear resistance at high sliding speeds and low unit load (up to 50 psi) in 1,000 to I,800F. air. Promising materials i for high-tenperature high-speed sliding bearings and se?,ls include A.lpO-^-Cr-Mo Cermets, SiC ccramis and .TiC-Ni-Mo cermets. Extract from U.S. Government Research Reports I960, 3^, No. 6, p. 737. 349 SOVIETS USE METAL-CERAMIC ASBESTOS DISCS. An. Product Eng. June 13, I960, p.8. ASARCO ALV 0006427 j'SEBSI'OS BULLETIN 50 ,50 U.S. PATENT 2,946,091. CURING THERMOSETTING COMPOSITIONS. American Brake Shoe Co. This patent is covering a ne'-v type of press for curing brake lin ing materials based on phenol formaldehyde type of resins. 351 U.S. PATENT 2,954,852. FRICTION MATERIAL. General Motors Corp. The composition consisting of assesses, silica and mica powder and cork dust incorporates a phenol fornaldehyde-buiadiene acryloni trile Type of binder. 352 U.S.?. 2,966,737. FRICTION ELEMENTS. R.E. Spekes & F.V/. Smith. American Brake Shoe Co. on i A friction couple co mprisos a rigid metallic support and a f: tion element for nigh energy applications, the element consist: of a thermally stable- heat-conductive metallic metric: having d; persed therein bodies of aluminium silicate mineral consisting' only cf highly angular naturally -securing pure sillimanite. (He stable up to about 1550"C.) PART 5. ASBESTOS FIBRE-RZINFORCSD PLASTICS. 353 ASBESTOS REINFORCED PLASTICS. Ind. Eng. Chem. 1961. No. 4, p. 23A. Recent high-strength, high-tenperature applications of plastics reinforced with asbestos fibres in nose cones and exhaust nozzles of rockets point the way to other potential markets, perhaps in the processing industries. Asbestos fibres have great strength, light weight, and large surface area, making them an ideal rein forcement for plastic materials. Other advantages are flexibility and resistance to heat, moisture and weathering, (complete, abstract), 354 TEFLON-ASBESTOS CUES SOLVE HIGH HEAT SEALING PROBLEMS. Rubber Age. Feb. 1961, 88, 822. ASARCO ALV 0006428 91 ASBESTOS BULLETIN 355 COMPOSITE FIBRE-REINFORCED PHENOLIC INSULATION. Materials in Design Eng.,. 1561, 53, No.5, P.119* A 5-ft. diam. reinforced phenolic disc is said to be the largest com pression moulded part yet made. The 400-lb. concave disc is the closure insulation protecting the steel engine casing of the Minuteman missile. Made of phenolic resins reinforced with silica, asb estos and graphite fibres, the piece will withstand more than 5000 F at high pressures while holding the casing temperature to a maximum Asbestos phenolic fe.lts and their use in nose cones are dssc and illustrated. (two lino drawings). xRlcevcJoUrIUd C&C Jin-Atilernational Furnisher. 196 (5th May), p. 725. Vinyl resin laminated to asbestos fibre backing called Hydrocord has ^be. e_ _n_ d_* eveloped by Armstrong Cork*____ t _______________ n - ^ C_o., for surfacing furniture_n_____ ________________: __ __... . - Asbestos may be used as a filler (25-40$ by weight) in the manu facture of carriers moulded from polyolefins. 359 B.P. 864,057. MANUFACTURE OF LIGffiLYEIGHT BUILDING ELEXR'IS. J, Fisher. An apparatus for manufacturing lightweight building elements of fibrous material and a mineral binder, comprises a plurality of moulds arranged on a rotary head rotating about horizontal axis, wherein fibrous material is loosely strewn or loosely stuffed in the moulds between slack resilient inflatable ccnes with internal stiffeners. i ASARCO ALV 0006429 asbestos bulletin 360 B.P. 866,925. REINFORCED PLASTIC LIKING FOB TUBES. H.J. Goodwin. jke sleeve lining may consist of asbestos and thermoplastic or thermosetting resin. nPART 6. JOINTING, SEALING AND COATING COMPOSITIONS. ? 361 U.S.P. 2,977,248. GASKET AND METHOD OF MAKING SAME, i General Motors Corn. A heat, chemical and solvent resistant gasket is made of short asbestos fibres (60fi by weight) and 40 parts of plastic mixture of the following composition: 100 parts butadiene-acrylonitrile copolymer (75^ butadiene - 25% acrylonitrite) 5 parts zinc oxide 1 part stearic acid 15 parts mineral oil 25 parts carbon black 1.5 parts sulphur 1.5 parts AItax (benzothiazyl disulphide) PART 7. PLASTIC BUILDING MATERIA! wrp-r o. 362 REINFORCED EPOXY PIPING: EXTENSIVE TESTS IN VARIED ENVIRONMENTS. Rubber & Plastics Weekly, 1951, 140, No.18, pp. 682, 634-585. Test results on Bristol Aeroplane Plastics Ltd., glass and acrylicfibre reinforced pipes subjected to variety of fluids and lowtemperatures. 363SPECIALISED MATERIALS HANDLE CORROSIVE CHEMICALS. An. Ind. Eng. Chem. 1961, 53, No. 5 pp. 52A-54A. Johns-Manvilie' s "Chemtite" pipe is mentioned as being the r.orru economical material for carrying hot corrosive liquids up to 300CF. It is made of asbestos-reinforced epoxy or phenolic resir. ASARCO ALV 0006430 i ^5^ i 93 ASBESTOS BULLETIN i 364 P.V.C. FOR HOT WATER PIPES. Rubber & Plastics Age, 1961, \: 42, No. 5, p. 531. ! i I j 365 PLASTIC PIPES AND PIPELINES. C.H. Tetherton. Chemical & *11< Process Eng. 1961, 42, 5, PP* 208-211. 2 366 PLASTIC PIPE SURVEY SHOWS INCREASING USE BY MUNICIPALITIES. Can. Plastics, 1961, 1, 36, p. 36. 367 Can. r. 544,585. PIPE COVERING. Miracle Adhesive Corp. Coverings for steam, oil and waxier pipes which have previously been encased in asbestos, consist of sheets of plastic material with closure tapes with interlocking jaws fastened along the lengi- 368 CLASSIFICATION OF pp. 221-223. C. FLOOR i ,'~r* C I960, 50, 4, This article covers most known types of r.V.C. flooring material. (In German). 369 BRITISH PATENT 854,103. STABILIZED ASBESTOS-FILLED VINYL CHLORIDE EDS IN COUP. Ferro Corp. An asbestos-filled polyvinyl chloride resin composition contain ing boric acid in intimate admixture and zinc oxide which im parts stabilizing effects against deleterious effects of heat and light. PART 8. ASBESTOS PAPER AND INSULATING MATERIALS. 370 CAN. PATENT 606,428. APPARATUS AND METHODS OF PREHEATING CEMENTITIOUS INSULATING MATERIAL. This invention applies to magnesia insulation or fibre reinforced calcareous silicious materials. ASARCO ALV 0006431 asbestos bulletin 371 U.S. PATENT 2,957,223. APPARATUS FOR SEVERING- CAST MAT Owens - Illinois Glass Co. Apparatus for cutting calcium silicate or the like insulating slubs into plurality of smaller slubs. 372 HOW TO CHOOSE THE RIGHT ELECTRICAL INSULATION. i A.J. Sherbourne. Prod. Eng. 1961, _32, No. 15, pp.41-45. { A summary ofthe various factors to be considered when selecting ! insulation, accompanied oy tables summarising the thermal, elsct} rical, mechanical, and chemical properties cf a wide variety of materials, including asbestos papers, -capes, and plastics. ! 373 SILICONES FOR BONDINC- S2ESTCS PRODUCTS. Gummi A oe; Hunststcffe. 1961, 14, No. 3, pp. 205-210. Article about Wacker Chemie's silicone binder emulsion form in making asbestos rarer. IiS US to PART 9. REFRACTORY FIBRES. 374 DEVELOPMENT OF TEXTILE TYPE VIIROUS, SILICA YARNS hyC. 7. 7'endall Drummond and Bums A. Cash. U. S. Gov. Res. Re-ocrt: I960, No.4., p.450. Experiments.'were performed leading to development of methods for producing fused quartz reds by means of electrical heating de vices. Both induction and resistance furnace devices were u best performance being obtained from a resistance unit shiel:.-_a against radiation losses and operating in a protective atmosphere. Power capabilities of available equipment were insufficient to permit production of a large number of continuous filaments simul taneously but operation with 5 filaments was achieved, A limited amount of data on physical properties of filaments and strand was : 1 obtained. (Complete abstract). 4 375 \ FLEXURAL RELATIONSHIPS OF A METAL FIBRE REINFORCED CERAMIC. Eruce R. Goss, Allis-Chalmers Mfg., Co., Milwauke, Wis. 'i Paper delivered at American Ceramiic Society's 63rd Annual Meeting. IL ASARCO ALV 0006432 f 95 ASBESTOS BULLETIN : 376 CERAMIC FIBRES FOR FILTERING BUST FROM HOT GASES. L.J. Kane, i G.E. Chichester and C.C. Shale. U.S. Buy. Mines Rept. 1t Invest. I960, No. 5672, 18 pp. Results are given of tests made with an aluminium silicate filter to develop methods for removing dust from hot gases at 1800UC. t % 17 figures. 1 1 377 U.S.P. 2,957,756. FILAMENTARY GRAPHITE AND METHOD OF PRC^. l DUCING. Union Carbide Ccrp. i I The method comprises confining in a closed pressure vessel having 1 means for introducing inert gas therein a graphite rod surmount ing a carbon block, striking -a d.-c. arc between the rod and block while maintaining the pressure at 1150 to 1400 p.s.i. of effect \\ i vaporization from the rod onto the block in the form of a boule, cooling the boule, fracturing it, and removing graphite filaments 1 embedded therein. J 378 U.S.P. 2,953,739. *!ETH0B OF APPLYING ETAL TO GLASS FILAMENTS. Owens Coming' Fiberglass Corp. The method includes forming of continuous longitudinal globule of molten metal in projecting relation from a longitudinal slot orifice connected to a supply of the metal and orienting the glo bule across the paths cf filaments being Attenuated from streams of glass 379 U.S.P. 2,961,758. METHOD OF MAKING Owens-Corning Fiberglass Corp. METAL ELEMENT. The process comprises coating the individual surface of glass fibres, with metal, assembling the coated fibres to form a bundle, converting the bundle into unitary structure by joining the metal coatings on the fibre to each other and heating the structure to flow the softened glass from the coaxings. 380 DEVELOPMENT AND MANUFACTURE OF TEXTILES FROM CERAMIC FIBRES. Donald B. Aiken, Refractories Division, The Carborundum Co., Niagara Falls, N.Y. Paper delivered at 63rd Annual Meeting of American Ceramic Society. | ___________________________________ '! j ASARCO ALV 0006433 ASBESTOS bulletin 96 381 U.S.P. 2,980,510. PREPARATION OF FIBROUS TITANIUM DIOXIL3. E.I. du Pont de Nemours & Co. Process for preparing fibrous titanium dioxide which comprises reacting a halide of tetravalent titanium with a melt selected from the class consisting of boric oxide, alkali metal borates and mixture of boric oxide with at least one alkali metal borate. PART 10. MISCELLANEOUS. 382 GRAPHITE AND CERAMICS ORNL-3017 p. 97-100. M. C.Wittels & F.A. Sherrill. Nuclear Sci. Abst. 19'61, 15, p. 703. The effect of reactor irradiation on the temperature ax which asbestos is dehydrated is reported. 383 A3BEST0SIS CF LUNGS. (In German). H. Bohling, G. Jacoby & H. Muller Stuttgart. Georg Thieme Verlag, I960, p.165. 384 RADIOLOGICAL DIAGNOSIS IN AS3SST0SIS. R. Williams a P. Hugh-Jones. Thorax (London) June I960, 15, p. 103. 385 ASBS3T03I3 AND ABDOMINAL NEOPLASMS. 2, p. 1211. Keai. Lancet 1--OJ 0 J PART 11. REVIEW OF JOURNALS. ' AC-22 INTERNATIONAL ASBESTOS-CEMENT REVIEW. Editions Girsberger, Zurich, Switzerland. 386 387 388 r 389 The Mineralogy of Asbestos: illustrated 5 page discussion. A short Literary History of Asbestos. Asbestos-cement on Historic Monuments in Austria. New Asbestos-cement Constructions and Products in the U.S.S.R. The Soviet Seven Tear Plan envisages the erection of 37 new asbestos-cement factories. ASARCO ALV 0006434 97 ASBESTOS BULLETIN f 390 Competition for the Pilling Station and Garage. 391 Contest for an Expandable House. 392 Competition "The European Home I960". 393 A New Water Conduit in the French Pyrenees M.M. Azais & Salomon. 394 Asbestos-cement for Solar Screens in the Philippines. Federice S. Ilustre. 395 Competition for Asbestos-cement Plant Receptacles and Stools. 396 Economic Roofing for Central American Dwellings. ASBESTOS April 1961, 42. No. 10. 807, Western Saving Fund Bldg., Philadelphia 7, Pa U. ^07 Theory-cum-Practice in Asbestos Production. W.E.Sinclair. 398 Canadian Asbestos - I960. H.M. Woodrooffe. Annual Review. (reprint from Can. Mining J. February I960). 399 J-M Improved Super Insulation. Flexible type of Mink-K Insulation is described. 400 Cape Asbestos'will manufacture in Mexico. Aislantes Industriales, S.A. de C.V. of Mexico will begin manufacture of "Caposite", amesite pipe sections for high temperature insulation. 401 Tumal-Asbestos Ships Board. Page 40. News item on Turner & Hawaii Ships Beard meeting the requirements of the International Convention for the Safety of Life at Sea. 402 Market Conditions. Page 32. 103 Production Statistics. Page 42. ASEE3T0S May 1961, 42, No. 11. \ 404 Dust Control in Asbestos Operations. W.E.Sinclair. Page 2. 405 Aphibole Asbestos in South Africa. Extract from the paper presented to the 7th Commonwealth Mining & Metallurgical Congress at Johannesburg by F.E. Keep. 406 Eesto-Tak. Page 14. New item on Johns-Manville new asbestos adhesive tape. ii 407 Asbestos Fibre Standards Laboratory. See item 311* 408 Market Conditions. Page 32. 409 Production Statistics. Page 38. '1 * ASARCO ALV 0006435