Document N2XLzVQORwZQJ67mY9R2xjL1D

PLAINTIFF'S EXHIBIT Part i. Part 2. Part 3Part 4. Part 5* Part 6. Part 7. Part 8. Part 9 Part 10. Part 11. ASBESTOS BULLET H Vol.7. Ho.I. January - February, 1966 I < ~X jju j"57 *3 *1 r*\ vi * o11-? or czynski C 0 IT j Z N T S AS3E3T03 I-IENING........................................................ ASBESTOS CEMENT........................................................ ASBESTOS TEXTILES .................................................... FRICTION MATERIALS ............................................... REINFORCED PLASTICS............................................... PLASTIC BUILDING MATERIALS AND PIPES . . ASBESTOS JOINTING, COATING ETC........................ ASBESTOS PAPER & INSULATING MATERIALS . . REFRACTORY PI3RES .................................................... MISCELLANEOUS ............................................................. REVIE?/ OP JOURNALS............................................... (C) Copyright Astex Publishing Co., 1966. 16 19 20 22 23 25 V.T1 4 - ' O J ASARCO ALV 0005631 > asbestos bulletin part 1. ASBESTOS MINING CANADA. 1. DRILLING AND BLASTING AT THE CASSIAR MINE T.L. Horsley. C^n. Mining Metall. Bull. Nr.636 (Trans. 68, 1965, 179-181) Montreal, June 1965 625-7 Drilling and blasting methods are described, which are employed at the Cassiar asbestos mine, located south of the 3.C.-Yukon border. "Pit" and "peak" mining operations are discussed, including specific problems, such as working in frozen ground, in various rock formations etc. Equipment used is briefly described, and calculation of mining costs is outlined. 2. INDUSTRIAL MINERALS IN 1964 ASBESTOS H.M.'Yoodroff e, H.X. Conn and S tic; mining ji-ngng. 1365, 17, No.2, pp. 120-1 Data of the production of asbestos in 1964 and details of the activity of main asbestos companies of Canada and U.S.A. are given. 3. ASBESTOS PRODUCTION. According to the Dominion Bureau of Statisctics, Ottawa, production of asbestos in Canada during July 1965 amounted to 109,466 tons compared to 119,020 in July 1964. Total for the first seven months of 1965 was 574,554 compared to 716,708 for the some period in 1964. 4. AYLMER MINES. With asbestos reserves in excess of 6,000,000 toios on its Coleraine Township, Canada, property, Aylmer Mines is negotiating with a firm having active mills in the area for further development or dis position *>f the property. 5. ASBESTOS MINING, MILLING AND USES. "AMIA1TTE-ASSEST0S". Prepared by the Quebec Asbestos Mining Assoc., 580 GRANDE-ALLEE EST., QUEBEC. The eight company members of the Quebec Asbestos Mining Association have provided a most valuable bulletin ^n the Quebec asbestos industry. .6 ONTARIO MINING MAP. A colourful ne?/ map has been prepared by the Ontario Department of Mines, Toronto, Ontario, Canada. The map itself shows the geology of the province in simplified form and also the major mineral deposits. ASARCO ALV 0005632 ASBESTOS BULLETIN U.S.S.R. 7. ASBESTOS EXPORT OP TEE SOVIET UNION IN 1964. Vneshnaya Torgovlya S.S.S.R. za 1964 god. (Foreign Trade of the U.S.S.R.in 1964) Page 64. In 1964, the Soviet Union exported 212,200 tons of grade asbestos (compared with 180,100 tons in 1963), mainly to East C-ermany (24,70^ tons), '-Vest Germany (23,500 ton), Prance (23,100 ton), F-lana (18,600 ton), Czechoslovakia (17,300 ton), Bulgaria (15,800 ton), Hungary (14,100 ton), Japan (11,900 ton) etc. 8 RICHTERITE - ASBESTOS. I.r.Ivanov and G.A.Si dorenko. Za Diski Vsesoyuz. Yineralog. Obshahesxva, IS '-IT.o1 . Rs , p.p. 497-506. Recently a new modification of amphibole asbesxos found at Aldan (Soviet; Union) has been described by A.IvI. Korchagin (1961). This greenish-grey variety occurs, in the form of inclusions in xremolixeactinolite deposits. : EXPORT OF CHRYSOTILE ASBESTOS OF SOUTH AFRICA. THE Rr.runr-iC Mineral Trade Notes, Vol. 61, No.2. Country ^f destination Angola Australia Denmark Germany Iraa Italy Japan Morocco Poland Portugal Rhodesia Rumania Spain Thailand United Kingdom Other countries Total 1963 5/Tcns 270 1,421 - 3,390 - 1,816 1,299 - 250 329 732 440 3,064 1,302 953 843 16,109 19 6-- S /'10 ns 10 399 500 4,162 791 2,236 10,510 251 - 119 4,143 - 1,250 687 2,759 756 28,573 ASARCO ALV 0005633 f asbestos bulletin .10 EMBARGOES ON RHODESIAN MINERALS. London, December 10, 1965* Mining Journal The rate of asbestos production in Rhodesia is governed by the export demand. The industry had a sharp setback in 1962, when production fell to 142,200 short tons from the 1961 peak of 161,600 tons, due to the weakness of world markets and to growing competi tion from Russian fibre. Though the tonnage of asbestos produced in the following year was virtually unchanged from 1962, its value was 17 per cent lower. Much lost ground was recovered in 1964, when output rose to 153,390 tons and its value by 14 per cent to 5.85 million. Exports went to 51 countries and included all grades of fibre. The largest market was the United Kingdom, which purchased 45,083 tons of asbestos from Rhodesia, valued at 3,798)64 0'XZ OX X 0S iasbestos imports of 183,929 tens. Most of th Rhodesian material came from the substantial mining: interests of TURNER NEV/ALL, ;ne j.ars:esH wnouesiar. oroaucer t re Shabanie Mine which employs 3,800 people, is controlled t* Grout. one of Rhodesia's lIaf,r gest customers is the cement piping and sheetirn industry of 'Vestern Europe. The PA.NGAEI mine near EILABU5I is being re-opened and equipped at a cost of 1 million, to produce a grade of fibre suitable for export to asbestos cement manufacturers. This mine, when completed, is expected to increase Rhodesia's asbestos experts by 2.25 million a year. It is anticipated that Rhodesia's asbestos exp~rts this year will be maintained at the 1954 level. Prospects for 1966 must now be considered more doubtful, however, having regard to the highly com petitive world situation, in which alternative outlets capable of replacing markets lost through sanctions may not be easily found. .11 MINERAL RESOURCES OF THE 3ZCHUANALAND PROTECTORATE C. Boocock. Overseas Geol. Miner. Resour. London, 9, No.4, 1965, 357-417. Large areas of the Bechuanaland Protectorate have been already prospected, but vast tracts still remain without being covered by modern scientific prospecting methods. Gold, silver, asbestos, manganese, kyanite and copper have been worked out and the first four are produced at present. tj id ASARCO ALV 0005634 6. ASBESTOS BULLETIN 12. THE GEOLOGY OF A PORTION OF THE COUNTRY BETWEEN THE EOMATI AND USUSHWANA RIVERS, NORTH-',VEST SWAZILAND. D.A. Pretorius. Bull. Geol. Surv. Swaziland, No.l, Mbabane, 1961, pp. 56-83. A study is desribed of the stratigraphy, petrology and economic geo logy of the strip of country running along the Transvaal-Swazilana border. Ore formations described include, inter alia, asbestos deposits. 13. IS ASBESTOS ON ITS WAY OUT? O.E.3. Timmermans. Coal, Gold and Base Minerals South Africa, 1965, 12, No.12, pp. 35, 37, 39 and 41. Perspectives of the application of asbestos are discussed. U.S.A. 14. GEOLOGY OF THE INDEPENDENCE QUADRANGLE, INYO COUNTRY, CALIFORNIA. D.C. Ross. Bull. rJ. 3. geol. Surv. 1181-0, Wash. D.C. 1955- Geology is described ">f the area of approximately 2-iO so. miles near the western margin of the Great Basin. Prospects have been dug inter alia, asbestos. SPAIN 15. ASBESTOS. S. de la Concha. BoIn. Inst. geol. min. Esp. Madrid, 75, 1954, 63-110. Characteristics are given of various types of asbestos, genesis of deposits mining and processing methods, commercial classification etc. In one section (pp.97-99), Spanish asbestos is described. ITALY Production and imports of asbestos increased substantially in 1964 in response to growing domestic requirements. Most of the imported products was high-grade, long-fibre, asbestos. Production 1963 57,532 Metric tons 38,757 6,412 1964 68,559 metric tons 43,890 9,017 Source: Foreign Service Despatch A-1504, June 17, 1965 - Rome. ASARCO ALV 0005635 r `<1 ' asbestos bulletin 7. 16. AUSTRALIA Imports of asbestos for the YEAR 1964 amounted to 42,895 short tons (Amosite 7,373; Chrysotiie 32,075; Other 3,447). Exports of asbestos for the same period for all types and grades amounted to 7,280 short tons. (Bureau of Mineral Resources.) PART 2. ASBESTOS CEMENT. 17. ASBESTOS CEMENT - "MOPOTHEEM" COMPOSITE MATERIALS R. Stepita Plasticke Hraoty a Eencuk, 1964, 1. No.12, 361-5- Prefabricated structural elements made of asbestos cement and foamed material l!Mofctherm" were used in the construction cf an East; Slova kian foundry. The elements consisted of laminates comprising asbestos cement plates and layers of "I.!ofctherm", which is a foamed ureaformaldehyde resin. The resin was formed in situ by spraying simultaneously in between two flat or corrugated asbestos cement plates two separate solutions, viz. "Mofcsol" (a 40-507= aqueous solution of ureaformaldehyde resin having a viscosity of 20 centip.oises) and "Mofodur" (a mixture cf dibutulnaphxhalenesulphonic acid, lauryl alcohol, lauryi sulphate, sulphuric acid, phosphoric acid and resorcin). This method greatly reduced the costs. .18 METHQES 0? MECHANICAL TESTING- AS3E3T0 l CEMENT SHEETS. F.A. Stefanovech. Strait. Mat., 1955, No.10, pp.21-22. Methods used now for determining the bendin, strength of asbestos cement sheets are inadequate and unreliable s ince they do not take into account various factors substantially influencing the bending strength, such as the thickness of asbestos c ement sheets (the bending strength per unit area is smaller for thicker sheets than for thinner due mainly to non-uniform spacial distribution of the material during forming), moisture content (a ir-dried sheets are stronger than those dried by other method or wet), creeping tendency, hardening conditions etc. There is an urgent need for a standard method of measuring the bending stre ngth of asbestos cement sheets. 19. RUSSIAN PATENT 172,213. PREPARATION OP ASBESTOS C.tMENT HASS. I.I. Pogarskaya et al. A coagulating agent is added to a mixture of asbestos fibres, cement and water in order to accelerate the dehydration of the mass and improve its plasticity. A suitable coagulating agent is poly acrylamide added in the form of a suspension, in an amount of 0.0250.037= based on the 'weight of cry asbestos. ...................................... ........... '-w- *v- ) ft- ASARCO ALV 0005636 r 8. ASBESTOS BULLETIN .20 CAPRON NETTING FOR THE FILTRATION OF ASBESTOS CEMENT SUSPENSION. S.I.Dvoinichkov. Stroit.Mat. 1965) 11, Nn.9, 7. Capron netting proved to be more suitable for the filtration of asbestos cement suspensions than brass screens. The netting, pro duced by the Kiev factory of technical fabrics, has a warp strength of 260 kg/cm^., and a weft strength of 60 kg/cm^. It is especially suitable for the production of asbestos cement pipes. 21. GLUE -METALLIC JOINTS OF THE ELEMENTS OF ASBESTOS CEMENT PANELS. A.A.Oleinik. Stroit. Mat. 1965, 11, No.9, 8. In structural wall panels, asbesxos cement linings attached to the framework, are exposed to considerable stresses. It has been found that the best results can be obtained by combining glue jointing with metal joints, such as screws or various clinches. As glues, synthetic adhesives are very suitable, preferably based on epoxy resins. In laminates, the glue joints between asbestos cement sheets can be advantageously reinforced by metal joints. Suitable for this purpose are 5-6 mm. diameter screws, or 10-14 mm diameter tubular rivets. 22. THE RESISTANCE OF ASBESTOS CEIdENI TO TEE *CTION OF SULPHATE WATERS. E.C-. 3arbakadze and Fedorova. Tr. n.-i. in-t asbesta, slyudy, asbestotscmentn. izdelii i proektir. str-va predoriyatii slyud. crom-sti. 1965, No. 19, pp. 42-55; Ref.'ZHur. Khim., 1965, 20M 189. It has been found that under the action of S04^"ion decrease in the strength of asbestos cement first starts when the CaSO^ build-up reaches about 14-15^ (11-12% in the form of calcium hydrosulp'noaluminate and 3% in the form of gypsum). The build-up of CaS04 on contact with sulphate waters is 2-3 times lesser in autoclave asbestos cement than in ordinary asbestos cement. 23. FRENCH PATENT 1,406,551. CEMENT-BASE MOULDED PRODUCTS. Centre de Recherches de Pont-a-Mousson. Products based on a mixture of portland cement and asbestos have fly ash added to the mixture in a proportion at least equal to that of the cement. The mass is moulded and, then, subjected to a steam treatment at a pressure exceeding atmospheric pressure but less than 1 atm.gage. A. ASARCO ALV 0005637 N * . * ! IfriO<(y>*ri< r asbestos bulletin 24. LAYING OF ASBESTOS-CEMENT PIPES V/ITH A EE'" TYPE BUTT JOINT. V.G.Greber.kin(Translation from Russian) 9. The yearly production "'f asbestos-cement pipes in the U.S.S.R. exceeds 40,000 kilometres. None ~f the two pipe couplings pres ently used have been found completely satisfactory, 7/hen assembling "Simplex" couplings great effort is required to set properly rubber rings over the couplings inn&r annular project ions while "Gibault" coupling used for pipe joining calls for extra labour, is rather expensive and consumes metal. The Scientific Research Institute f-r Asbestos Cement has designed a new type of coupling called Vodgeo, which secures air tightness at test pressure up to 10-15 kg/cm2. Construction of the Vodgeo coupling is shown in Fig.l. The annular projection at the blank end of the coupling holds the rubber ring inserted in the clearance between the pipe and the coupling. By not having annual projections at the mounting end an effortless insertion of the rubber rin~s is achieved. To. crevent the rubber rings to be squeezed out, at the assembly end, there is a groove in which a mortar lock is form.1 Insteau ox the latter a rubber pins' can also b 2.3 c'Ct Before laying the pipelines, butt joints of 456 mm diameter pipes were tested f-^v inner p^ess'ms ^k^/cm^ ondevi ^cer^tional cauditions. It has been found that even when using rubber rings subjected t~> accelerated aging (elasticity loss of 20-18/--) and an axial disolacement in the butt ui ; *> iuo :ig.ntness was not cisructea. The first experimental 1 km icr.g stretch of asbestos cement pipe line with Vr'dger' butt coupling, was laid in 1361 in Kalinin. In f'll 'wing years such butt joints -were used in pipelines 2-3 km long in Kalinin, Torznok and other places. The couplings were made on the usual lathes from pipes of larger diameter. On the experimental stretches pipes of 100 to 45 mm were laid. At pressures of 12-15 kg/cm2 the tightness of the butt joints in no case was disturbed. In some instances cracks appeared in the pipes due to the damage in transport. The butt joints were assembled by means of a simple tool or a special device for fitting of the couplings. f MJ. i n-.vft*i,*, *%< .* / L 7! t} !\ II ,i I i i ASARCO ALV 0005638 10. ASBESTOS BULLETIN Experimental stretches of 100-300 diameter asbestos cement pipe lines 1-3 km l'ng were laid during the years 1962-1964, using "SAM" c~uplings designed by Scientific Research Institute for Asbestos-Cement. Tightness of the coupling "SAM" is achieved not by the standard round section, rubber rings, but by special rings of u section. The "SAM" coupling is shorter than the Vodgeo one but has thicker walls. The pipelines with "SAM" couplings were tested under pressures up to 15 kg/cm2 and tightness of the butt joints was not disrupted. "SAM" couplings are easy to fit on pipes of small diameter, but when they are used with 300 mm diameter pipes great effort is required. Because of this, the question arose whether there is a point to use "SAM" couplings on pipes over 400 mm diameter. Moreover, when lowering pressure in a big diameter pipeline, some self entightening of the rings in the joints takes place. Laying pipelines with the Vodgeo type coupling proved that by simple means it is possible to secure sufficient relayability and high tightness of asbestos cement pipe joints. This will allow to use them widely for cioelines with working pressures up to 10 to 12 kg/cm2. As a result these experiments Gosstry of U.S.S.R. approved provisional Code of Practice for laying asbestos dement pipelines with Vodgeo butt joints. Summarising, the following observations can be made; It is advantageous t'' use asbestos cement pressure pipes only for water pipelines and sewerage systems. 3oth Vodgeo and Nil of Asbestos Cement "SAM" couplings should be used but for pipelines of ^ver 350 mm in diameter, only the Vodgeo type should be used. Manufacture of both types of couplings is simple. However, when using with "SAM" couplings not standard rings, extra difficulties are experienced. Standard ring for "SAM" coupling should be of U cross-section. 25. BELGIAN PATENT 661,499. FORMATION OF ASBESTOS CEMENT SHEETS. Johns-Manville Corp. Deposition of asbestos fibres and cement on a conveyor to form a sheet of asbestos cement is assisted by the use of a coagulant. In order to control the relative thickness of sections of the sheet, the coagulant is spread onto the'paste at definite stretches across the width of the conveyor. ASARCO ALV 0005639 Fig-1. YCr.'GFO Type Eutt Joint. o t i*. Fig.2. SAK Type Eutt Joint. ? i I sfi t. i l nt 5 ASARCO ALV 0005640 ASBESTOS BULLETIN 13. 26. BELGIAN PATENT 662,590. ASBESTOS CEMENT MOULDED PRODUCTS. Centre de Recherches de Pont-a-Mousson. Moulded products are manufactured from a mixture comprising asbestos fibres, portland cement and fly ash, in an amount at least equal to that of the cement. The moulded products are hardened in vyater vapour at a manometer pressure of 0.1 bar. The process is suitable for "che manufacture of flat or corrugated plates, pipes etc. In stead of asbestos, other fibres may also be used. 27. GERMAN PATENT 1,199,678. PROCESS FOR UTILISATION OF AQUEOUS SLUDGES FROM THE PRODUCTION OF ASBESTOS CEMENT ARTICLES. Soc. Anon. Eternit. Residual sludges from the production of asbestos cement articles are mixed '.vith such pulverulent materials which harden by reaction with calcium hydroside contained in the sludge. Suitable pulveru lent materials include quartz sand, natural or synthetic pozzuolana, powdered slag, fly ash etc. Mineral or organic fibres may be added to the mixture. In this way strong bricks, plates, or similar products can be obtained. In an example, 300 kg. of a sludge con taining 8Gf water were mixed with 50 kg. oczzuolana earth and 15 kg. of mineral or organic fibres to produce, in a paper-making machine, structural dates. 28. GERMAN PATENT 1,203,17*. PROCESS AND APPAR. US FOR THE PRODUCTION OF ASBESTOS CEMENT ARTICLES Tcrfit- V/erke G.A. Has eke & Co. A process for the production of asbestos cement articles from mix tures of fibrous material, binder and plasticisers, by extrusion, is characterised in that the mixture, before the final shaping, is cooled to 0-5C and pre-formed into homogeneous blocks of a higher density. PART 3. ASBESTOS TEXTILES. 29. FRENCH PATENT 1,408,892. TREATMENT OF ASBESTOS FABRICS. S.A. Francaise de Ferodo. Asbestos fabrics containing at least 84f asbestos fibre are colourprinted, at least on a part of their surfaces, to mask the velvety appearance of the material. 30. THE INORGANIC FIBRES. J.A. Goodrich and R. Matchett Prod. Engng., 1964, 35, No. 18, pp. 63-66. A review is given of the characteristic properties and applications of 14 basic types of inorganic fibrous materials including asbestos. ASARCO ALV 0005641 14. ASBESTOS BULLETIN 31. RUSSIAN PATENT 172,727. METHOD FOR RESTORING THE OPTIMUM PERMEABILITY OF ASBESTOS MEMBRANES OF CHLORINE ELECTROLYSERS. V.I. Arzhadeeva et al. For this purpose, a surface-active substance is added to the elec trolyte introduced into the cell. Suitable surface-active compounds include ethylene glycol, diethylene glycol, glycol, glycerol, etc. 32. GERMAN PATENT 1,199,441. A RAM WITH A PACKING RING FOR COLD-CHAMBER PRESSURE-CASTING MACHINE. Volkswagenwerk A.G. A ram for a pressure-casting machine is provided with an extensible packing ring which is pressed against a conical seat by means of an axially movable header, being thus spread against the walls of the chamber. The. packing ring is preferably made of asbestos. PART 1. FRICTION MATERIALS. 33. CANADIAN PATENT 705,443 iOULDED BRAKE SHOn. Raybestos-Manhattan Inc A composition suitable for producing moulded brake shoes having a marked reduction in wheel tread or wear, good wet/dry friction ratio, uniformity of friction over the range of operating tempera tures and good mechanical properties, comprises (according to one .example) 6wt% of fine synthetic graphite, 10% of natural galena ore concentrate, 9.6% of a cashew resin solution, 12% of calcined kyanite 5.2% of calcined petroleum coke, 20% of white iron grit, 10% of fine cryolite, 8% of asbestos fibres and 19.2% of a milled rubber binder. Reduced wheel wear is attained by the incorporation in the compo sition of cryolite along with a comparatively high proportion of organic binder. 34. GERMAN PATENT 1,202,076. FRICTION LINING. Soc. d'Etudes Physico-Chimiques et des Realisations Industrielles S.A. Friction linings for brakes or clutches made of normally bonded lining material, such as asbestos, and containing as additives, copper, brass, calcined clay, titanium dioxide, carbon black, graphite and metals, such as Zn, Fe, Ni, Pb, Mo, W, Cr or their oxides are characterised in that they contain at least in the sur face layer, as an additive to horn mass, glue or casein, cupric oxide, preferably with the addition of cuprons oxide. A tvpical composition comprises 40-50 wt.% CuO (optionally with CU2O), 5-15 wt.% Zn powder, 1-6% calcined clay and 29-54% of phenoplast. ASARCO ALV 0005642 asbestos bulletin 15. 35. RUSSIAN PATENT 173,919. PRODUCTION OP FRICTIONAL MATERIAL. A.A. Primatov et'al. 5he heat resistance of frictional materials based on asbestos as a filler, and a rubber-resin binder, is improved by the addition of 2-3 wt.f=> of an organo-silicon liquid and 1-5 wt.$ of aluminium oxide 36. RUSSIAN PATENT 173,918. APPARATUS OP THE ROTARY TYPE FOR THE VULCANISATION OF RUBBER AND ASBESTOS-RUBBER ARTICLES. A.A. Shavanov et al. A rotary apparatus is described for the production of rubber, or asbestos-rubber articles, e.g. friction-linings for clutches, by an automatic method including mechanised charging, pressing and unloading of the finished product. ASBESTOS REINFORCED PLASTICS 37- GERMAN PATENT 1,200,072. NOZZLE FOR A ROCKET i;a/TUpmx nV*Dii * Bristol Aerojet Ltd. A convergent-divergent nozzle for a rocket motor consists of a body of a light metal provided with s lining of asbestos fibres bended by means of a phenol-formaldehyde resin. The construction of the nozzle is described in detail. 38. ASBESTOS-REINFORCED PLASTICS. ASBESTOS IN DUROPIAST LAMINATES. H. Berger. Gummi-A.sbest-Kunststaffe, 1965, 18, No.10, 1207-18. A STM tests relating to Duroplast plates and tubes are described in detail. 39. INDUSTRIAL APPLICATIONS OF ASBESTOS-REINFORCED PHENOL RESINS. Plastica, 1965, 18, No.3, 128-330. Industrial applications of asbestos-reinforced phenol resins are briefly discussed. Various "Ferobestos" products of J.Y/. Roberts Ltd., England, are described in detail. The mechanical properties and chemical resistance data of "Ferobestos" materials comprising different forms of asbestos reinforcement (woven fabrics, felt, nonorientated loose fibres, asbestos paper etc) are tabulated. 40. PRELIMINARY PROCESSING OF ASBESTOS AS A PLASTIC FILLER AND ITS SORPTION PROPERTIES. A.B.Davydov Z.G. Ivanova Plast.Massy. No.l, January 1965, pp. 46-48. The type of asbestos, i.e. soft or hard, and the preliminary treat ment have a marked effect on the reaction and sorption of organosilicon binder resins by this filler. T ii j \i >1 ! H a: ASARCO ALV 0005643 16. ASBESTOS BULLETON 41. HITCO ELASTOMER 1020. Chemical & Insulating Co. Ltd., Refrasil Product data. Darlington 1963, pp.l. This is an asbestos/silica reinforced butadiene-acrylonitrile com pound approved for many aerospace applications, notably nozzle covers, chambers, and closure insulation for surface protection^ from flame temperature up to 5000P for up to 120 seconds duration. It is designed for use by hand lay-up or compression moulding and' requires heat and pressure to effect a cure. 42. FRENCH PATENT 1,399,049- REINFORCED PLASTIC MATERIALS Monsanto Cb. Reinforced materials comprise a polymeric substance and a major pro portion of a reinforcing inorganic material linked to the polymer by means of a coupling agent. Suitable reinforcing agents include alumina, feldspar, wollastonite, chrysotile asbestos. Suitable polyamides, polystyrene, polyesters, polymeric compounds of vinyl, allyl, methacrylates etc. As coupling agents, derivations of halosilane or alkoxysilane are used. PART 6. PLASTIC BUILDINS MATERIALS AND PIPES. 43- THE RESISTANCE OF HYDRO-INSULATING MATERIALS TO THE GROWTH OF ROOTS. I.V. Provinteev. Stroit. Mat., 1965, 11, No.6, 31-33. Wherever sand or dust accumulate on roofs, plant growth may start and the roots may strongly attack the roofing material. In the NIIAsbestsement institute research has been carried out on the resistance of various hydro-insulating roofing materials against attack by plant roots and micro-organisums. Samples of a number of roofing mater ials (containing in most cases asbestos as a reinforcing agent) were investigated, including Ruberoid, roofing board impregnated with different bituminous and similar substances, Izol etc. It has been found that whenever attack by plant roots is possible, protective layers should be applied, made of materials such as polyethylenepitch compositions, or combinations of Ruberoid with "hydrokam", or similar asphalt-base products. 44. ' STACKS FOR TEMPERATURES UP TO 180C. Resin News 1964, 4, No.9, 8. Marex Excelsior Ltd. of Wolverhampton, produce "Marex" reinforced plastic chimneys which can be used when the fume temperatures are low. Under these conditions "Marex" stacks are much more resistant to corrosion by^ses than steel or brick stacks. These anti-corrosion properties are due to a special lining made from "Durestos" asbestosreinforced plastic. ASARCO ALV 0005644. .. * V l t l o . ., ..... > .. r ASBESTOS 3ULLZTIN 45 GERMAN PATENT 1,179,906. PRODUCTION OP SURFACE COATINGS FOR INSTANCE FLOOR COVERINGS. Armstrong Cork Co. 17. Surface coatings, such as floor coverings with a grainy finish, are produced by applying a mixture of granulated polymeric materials onto a fibrous support, under pressure and at a temperature near the melting temperature of the polymers. The polymer mixture com prises two polymeric materials having different viscosities, e.g. polymerized vinyl chloride and its copolymer with vinyl acetate. The mixture may also contain plasticisers, stabilisers, dyestuffs or pigments, and fillers, such as powdered limestone, silica, clay, as bestos etc. The fibrous support may be impregnated or coated with a resinous substance. In examples, an asbestos layer is used as a sup port; it is coated, before the application of the polymer mixture, with an acrylic resin adhesive. 46. NETHERLANDS APPLICATION 6,414,386. HEAT-SIA31IIZED RnSIN COMPOSITIONS. Heyden Newport Chem. Oorp. . Comp,'sitions useful especially as floor coverings comprise a vinyl halide nomopolymer, asbestos, an inorganic filler and a stabilizer consisting a mixture of pentacrythritol and/or cipentaerythritol with dicyandiamide. In an example, a composition comprising 100 parts of polyvinylchloride, 111 parts of chrysotile asbestos, 285 parts of ground limestone, 32 parts of di-2-ethylhexylphthaiate, 4 parts of expoidized soyabean oil and 35 parts of titanium dioxide, is stabilized with 5 parts of a.1:1 mixture of pentacrythritol and dicyandiamide. The mixture is rolled for 20 minutes, at a tempera ture of I49CC, to produce sheets of a thickness of 1.15 mm. In tests, sheets containing pentacrythritol as a s^le stabiliser turned dark blue after heating for 150 minutes at 1490; under the same con ditions, sheets 01 the composition specified above changed from an off-white colouration to light grey. 47. PIPES & PIPELINES INTERNATIONAL - DECEMBER 1965Epoxy Resin Internal Pipe Coating. Perivale Paint Products Ltd. have developed the PERILINE process in which solvent-free epoxy resin coatings 0.008 in. thick upwards are deposited on the interior of pipes from 3 in. to 24 in. diameter with a possibility of coatings on pipes up to 48 in. diameter. Lengths up to 40 ft. or possibly more can be handled. 48. NE',7 LOOK AT PLASTIC PIPE. Mod. Plast. June 1965, 42, No. 10. A general review. ii : j11 .f !i ..... -ft. ^ !.<;r- in ' .<I'. > W ASARCO ALV 0005645 18. ASBESTOS BULLETIN 49. THE PIPES & PIPELINES MANUAL & DIRECTORY. Published by Scientific Surveys Ltd., 11a Gloucester Road, London, S.'-7.7. Review contains: A. N^n-metallic pipe (excluding plastics), glass pipe, asbestos cement pipe, salt glazed pipe, prestressed concrete pressure pipe, glass fibre reinforced concrete, pitch fibre pipe. B. Plastics pipes, the thermoplastics and the thermosets, properties, manipulation design and installation, maintenance, tech nical data. 50. AUSTRALIAN PATENT 251,708. FIBRE-REINFORCED FOAMED GYPSUM TILE. Ceilbit Ltd. A process for the production of fibre-reinforced foamed gypsum tiles comprises mixing together pulverulent calcium carbonate, porxlana cement, asbestos fibres and plaster of Paris, adding a dilute solu tion of sulphuric acid to cause foaming, and forming files from the foamed material. The tiles are then wire-brushed to form fissured surfaces. The product is pleasing in appearance, tough, non-hygroscopic, and has good heat-insulating and sound-damping properties. (This patent is: "lapsed before acceptance.") 51. CANADIAN PATENT 660,812. FIBERED LIGHT7-EIGHT GYPSUM PLASTnR. D. Lane. This material is made from about 13 wt.fi of exfoliated vermiculite, 65f of gypsum plaster, 12$ of sand, 5$ of lime or hydraulic cement and 4$ of asbestos fibres. The product is suitable for under coatings and finishing work as well. It has good elastic and acoustic properties, is more resistant to fire than normal gypsum plasters, and does not shrink or crck during drying. 52. JAPANESE PATENT 24185/65- FIREPROOF BUILDING MATERIALS. Nitto Boseki Co. Building materials are produced by mixing light, particulate, inor ganic materials, such as expanded perlite, exfoliated vermiculite or pumice, with inorganic fibres such as glass fibres, mineral wool or asbestos, and covering a layer of this mixture with a thin film of an adhesive prepared from a sodium silicate solution with a small amount of an organic tackifier, such as gum arabic, starch or car ta oxymethylcellulose. The product is then hot-moulded at a tempera ture at which the adhesive melts. ASARCO ALV 0005646 20. ASBESTOS BULLETIN 59 CANADIAN PATENT 701,290. PROTECTIVE COMPOSITIONS Winn and Coales Ltd. London. A composition for protecting buried metal pipes against corrosion comprises a mixture of plasticized coal tar pitch, a polyvinyl chlo ride resin, tar oil and up to 30 wt.y-' of a fibrous filler, preferably asbestos fibres, or pulverised talc. A cloth or tape may be impreg nated with the above composition and wrapped around the pipe. SO. GERMAN PATENT 1,198,475- COATING AND PILLING FREPATATIONS FOR STRUCTURAL PURPOSES BASED ON PHENOL-CONTAINING EPOXY- RaSINS. Shell Intern. Res. Ilij. In am example, a preparation is made of 245-5 parts of -sheet os, 10.1 parxs of silica, 275-1 parts of a polyglycidyl ether of ? mul tivlent phenol, 229-1 parts of an industrial fuel oil, 91-6 'ports of yj i p 0 r5 phenol, S3-7 parts of xylene, 63-7 parts of secondary butyl a T nm> n*l and 28.8 parts of disthyienetriamine. The preparation has s very good adhesion to cement and asphalt, and high resistance to c hemicals and to wearing. 61. BRITISH PATLNT 993,953- SEALING D COATING COMPOSITION Bostik Ltd. Asbestos used as a filler. 62. INDIAN PATENT 69,305- MASTIC COATING COMPOSITIONS Benjamin Foster Co. Coatings impermeable to water and water vapour, having = good elas ticity and heat-resistance, are produced using a bitumen-base com position comprising a licuid mixture of petroleum asphalt and gilsonite, a resinous chlorinated fire-retardant compound, Canadian 7R chrysotile asbestos fibre, a suitable pulverulent non-fibrous filler and a transient volatile solvent mixture of inflammable and noninflammable organic solvents. \ 63. FRENCH FATENT 84651 (ADDITION TO No. 1,318,029) MICRCPOROUS FILTERING MATERIALS. Lloyd & Hillman Ltd. r The coating dispersion contains amosite fibres. part 8. asbestos paper, heat insulating materials. 64. FRENCH PATENT 1,38-5,628. NON-COMBUSTIBLE FILTER PAPER Etablissements Schneider-Poelman. jj A non-combustible filter paper is made of asbestos fibres and a binder-, e.g. a strichiometric mixture of polyvinyl chloride and a polymer of NH2CON = CH2- vt ASARCO ALV 0005648 ASBESTOS bulletin 21. 65. CANADIAN PATi-ITT 106,519- 3LIITF0SCLD SHZHJEAL INSULATION KIAT1RIALS. Johns-IAanvilie Carp. A reinforced high temperature insulating material is produced by weaving into the desired shape a plurality of strips, or tapes of e.g. 3 resin-irapregneted glass cloth, covering the shape with a sur facing material consisting preferably of a high bulk asbestos pacer saturated with a solution of phenol-formaldehyde resin, ana pressing the shape in a closed mould at about 200 p.s.i. ana 300P. to fuse together the resinous material and provide a good bonding to the pro duct. The same method can be used for strengthening insulation mat erials comprising asbestos fibres in combination with magnesia, diatemite or hydrous calcium silicate. CANDIAN PATZ'NT 562,959- INS' R.S*. V>oq and ?.G. i-oster. NJCTUBAL 5TLII Structural steel is insulated in such a manner as to eliminate the possibility ~>i moist ure accumulating betv;een the insulation and the steel parts, using a mixture comprising 44-50 wt.'v- of asbestos fibres or shorts, 10LA of a silica gel as a. binder, 40-45;-- of exfoliated verniculite aggregat e, and 2> of a rust inhibiter consisting of sodium nitrate and trisoaiu:m phosphate. The mixture is sprayed onto the steel structure unti 1 a. thickness of about 1/15 in. is built up. The coating is air dried , cured and coated with one or more additional layers of the same c Disposition to obtain the desired thickness. 67. INDIAN PATLNT 65,442. HLAT-AND SOUND- iULATIITG BOARD. IT. lla j umd e r. A process for producing heat-ond sound-insulation boards comprises mixing asbestos powder and/or powdered glass with powdered calcined magnesite wetting the mixture with a solution of magnesium chloride, adding wood wool, preliminarily wetted with a solution of magnesium chloride ana casting the slurry thus produced into moulds. The hard ened product can be used as a substitute for cork in refrigeration or heat-insulation applications. 68. NTTHZRLANDS APPLICATION 6,500,311. HEaT INSULATING KATLRIALS. Philip Carey Mfg. Co. A heat insulating material is made of 40-807= expanded perlite, 5-207= mpntmorilignite clay as a mineral binder, 4-107> of a starch derivative with a low viscosity as a flexible, film-forming organic binder, about l-4/o of a phenolic resin, 5-257= short asbestos fibres of grade 7, and 0.2-37- of long glass fibres as a mechanical reinforcement. The pro duct has a low density, high flexural strength, resistance to cracking good heat-insulating power'in the range of -45.6 to +427C, and low moisture-absorption. It is resistant to the action of boiling water. ASARCO ALV 0005649 } 22. I <T \ ASBESTOS BULLETIN ( 69. NETHERLANDS APPLICATION 7,500,76. PRODUCTION 0? INC0I.L3U3 TI3LL EI1T1E LIATLRIAIS. Coup. St. Gobain. Porous materials, suitable for use as filters for gases at high tem peratures, are produced from a mixture of glass fibres and/or asbes tos fibres and an alymina trihydrate, such as hydrargillite, f~rming vith v;ater stable, colloidal dispersions, which have film-forming properties. 70 POLISH PATENT 48,361. HEaT-AHD SOUND-INSULATING iTIRIAj Instycut V/zornict-.va -rzemysrowego. He-t-and sound-insulating laminaxes comprise a layer consisting of exoanded !,Etyrofoam!l grains, ground :'Styrofcsm v;os'ces, cork powder-, other foamed plastics and a polyvinyl acetate-rubber binder-, ~ncther layer containing ground asbestos and foamed plastic "'saxes is sprayed on top of the first layer. The product is non-corrosive. r'"Dm o ur-ypAprTypy -- 71. PILAILLNTARY CRYSTALS C? REFRACTORY OYILEo ,-.iID THEIR APPLICATIONS. P.P, 3udnikov and j.3. Sandulov. Lnur. I Vsesoywz. Obshchestva im. D. I.TIendeleeva, 1955, 10, Ho. 5, 50S-5H. Literature relating to the production, properties and applications of refractory oxide whiskers is given, w'hiskers described include those of AI203 (sapphire), 3e.0.i-Ig0. TInO, CuO, and M0O3. Data of the ten sile strength and maximum elastic deformation of oxide whiskers are tubulated. Examples are quoted of metals reinforced with sapphire whiskers, and the strength of the oxide whisker-metal compositions is discussed from the theoretical standpoint. 41 references. 72. NETHERLANDS APPLICATION 6,502,032. HEAT-RESISTING CRYSTALLINE FIBRES. Babcock & Nileox Co. A solution containing one or more salts, such as sulphates, chlo rides, phosphates, acetates and nitrates of aluminium, beryllium, chromium, magnesium, thorium, uranium or zirconium, is concentrated t^ a viscosity of the order of 1-1000 poises, and the viscous solu tion is transferred into fibres by a blowing, spinning or drawing method and then, heated at temperatures between 430C and 1320c to eliminate the solvent, decompose the residue to one or more metal oxides, and to density the product thus obtained. 73. i HIGH-STRENGTH PLASTIC COMPOSITIONS 3ASED ON FILAI-ld'NTARY CRYSTALS. Ya. N. Shneiderman. rlasticheskic I5assy, 1965, No.9, 67-59* A review is given of foreign literature relating to whisker-rein } forced plastics. ,-L ASARCO ALV 0005650 r~ .SBESTCS BULLETIN <0. 74. WHISKERS MAKE REINFORCED PLASTICS BETTER THAN TOTALS J.V. Milewski, J.J. Shyne, Proc. 20th Anniversary Tech.Conference SPI, Reinforced Plastics Div., New York, 1965, Section 6-C, pp. 3.0. A definition of whiskers (made of metals or sapphire), their pro perties and an explanation of their super strengths are first given. Whisker potential use in reinforcing plastics, and as supplementary reinforcement in filament winding is considered. The author dis cusses how this revolution in high strength is going no affect the plastics engineer and how it will affect the plastics industry in competition with metals and ceramics. THE SYNTHESIS 0? HIC-H-RIPRACTC-RY INORGANIC FIBS;EES. I.:,I. Yarmoienka cvirvaava vests! Akad. Novuk Belarusk. 5.S.R. ;er. Navuk, i960, No.1, 39-4 3 High-refractory metal-carbon fibres can'be obtained by heatine C Vi r- r, -- ic fibres, particularly ceilulosic fibres, with metals attached to ion-exchange polymers and then pyrolysing the modified fibres under controlled conditions. The fibres thus produced have a ih:~iff-1h` temperature resistance, a good chemical stability and .mechanical properties. CLT *'--.T'VTrn aOi a } ' p*** *, CC Yereinigungs Volkeseisener Betriebe Glas. A glass is described which is free of t oric acid and alkali and is suitable for the production of glass fi 'ores for the reinforcement of plastics or for electrical purposes. Yhe composition of the glass (in males' is 5-7 silica, 0-0.5 alumina , 1-2 barium oxide, 1-2 zinc oxide and 0-0.5 lead monoxide. 77. FRENCH PATENT 1,412,775- SILICON NITRILE WHISKERS British Ministry of Aviation. s Whiskers of silicon nitride are produced by heating a mixture of silicon and its oxide to a temperature above 1200C to form a vapour 3 phase containing silicon, mixing this vapour with nitrogen in the : presence cf carbon and a small proportion of hydrogen, and contac: ting the resulting mixutre with a substrate heated to at least 1200C | Silicon nitride whiskers grow on the surface of the substrate. \ IART IQ. MISCELLANEOUS. 73 RUSSIAN PATENT 175,389- MASS FOR THE PREPARATION OF CARTON. 0..-V. Vyatkina et al. Carton used as a filter for fine clarification of wine is prepared from a mass consisting of (in wt./&): ground cellulose 70-50, chrysotile asbestos 15-25 and diatomaceous earth 15-25* l` ! \ i i -i i ii ' 1 ' i ct i ASARCO ALV 0005651 24. ASBESTOS BULLETIN 79. NETHERLANDS APPLICATION PATENT 6,505,506. ABRASIVES MATERIALS. Hooker Chemical Corp. These materials comprise asbestos fibres, an abrasive material and a binder based on a thermohardening phenol/aldehyde condensation pro duct. In an example, the binder is produced from (in weight parts): phenol 2000, sulphuric acid 24(catalyst), isobutyraldehyde 360, 37? formalin 400, d-limonene 1100, linoleol 2110 and soyabean oil 3200. 80. CANADIAN PATENT 706,076. DEFIBERIZATION OF CRUDE ASBESTOS. K.A. Oesterheld. An apparatus for defiberizing crude asbestos, particularly South African blue asbestos, comprises a cylindrical housing closed at least at one end by a cover and a cylindrical drum rotating within the housing. Between the housing and the drum there is an annular passage through which the fibre-liquid mixture is forced. 81. CANADIAN PATENT 656,174. DEGRITTING 0? CRUDE ASBESTOS FIBRES. R.F. Bourne and D.G. Cheyne. An apparatus for separating grit and other impurities from crude as bestos fibre comprises a horizontally disposed rotor enclosed in an elongated housing provided with an inlet for an air stream carrying raw fibres, an outlet and means defining a restricted passageway. The fibres are set in rotational movement whereby grit particles are dislodged and discharged through an outlet. 82. CANADIAN PATENT 656,800. ACETYLENE- CONTAINER FILLER. Chemetron Corp. A filler for holding dissolved acetylene is prepared by admixing water-soaked charcoal to an aqueous slurry of asbestos fibre, then adding diatomite or another source of silica, followed by a lime slurry. The resulting composition is thoroughly mixed, charged into a container under vacuum until the container is about half full, vibrated and allowed to settle. Then the remaining place is filled with the slurry in a similar manner. The filler thus obtained is highly permeable and dimensionally stable. 83. CANADIAN PATENT 659,508. REMOVAL OF ANIONIC SURFACTANT SUBSTANCES FROM ASBESTOS. Flammer Seifenwerke K.G. Residual soap or synthetic detergents, remaining on the surface of asbestos fibres after cleaning, are removed by treatment with an aqueous solution of a salt of an alkali metal phosphate or silicate, followed by washing with water and drying. ASARCO ALV 0005652 asbestos bulletin 25. 84. INDIAN PATENT 91037. PROCESS FOR EXTRUDING METALS OR ALLOYS. G.G. Platel. In metal extrusion processes, glass mixed with one or more additives is used as a lubricating agent. Suitable additives include asbestos powder, molybdenum oxide, powdered enamels, powdered slags, salts and similar substances. 85. FRENCH PATENT 85629. (Addn. to 1,346,402). ANTI IMPACT SUPPORTING DEVICE . Etabs. Lemer L Cie. Anti-impact supports for use in containers for the transportation of radioactive materials are made of asbestos sheet, corrugated paper or cardboard or plastic, shaped in s specified manner. 86 RUSSIAN PATENT 175,663- PROD- CHON CF hat: IAIS OF JP'T* ) c;.Q",rT7.y TYPE BASED C27 1 HE HYDROXIDE ND TRIHYDROCARBONA T2 CF HAGUE'SIU !. R.I. Arav t Si. Materials of the :lScvelite" type are produced from a mixture of the hydroxide and trihydrocarbonate cf magnesium and of calcium carbonate with addition of the light fille r, perlite, ana a fibrous filler, asbestos, in a weight ratio at 1 :0.85 ' 0.15* The mixture is then subjected to a heat treatment, The resulting product is characterizea by low bulk weight, low heat conductivity and improved mechanical strength. 11. REVIEW OF -JOURNALS "ASBESTOS" September 1965 807 Western Saving Fund Buildings, Philadelphia, Penn. 19107. 87. FIBRE TESTING FOR THE ASBESTOS CEMENT INDUSTRY, Dr. A.A.Hodgson McWett method and Asbestos Fibre Surface Area evaluations. P.2. 8. J.I.I. POLYESTER CHEMIIE, page 10. Announcement of Johns-I-Ianville Corporation development of asbestos reinforced polyester pipes. 89. J.M. ASBESTOS-CEMENT BULKHEAD , page 14. Protection of shoreline. 90. MARKET CONDITIONS, page 28. 91. PRODUCTION, page 34. 92. IMPORTS AND EXPORTS, page 36. 93. INDUSTRY NEWS, page 40. .i ASARCO ALV 0005653 .26 ASBESTOS BULLETIfl 'ASBESTOS", November 1965- 94. THE SUBPACE PROPERTIES OF ASBESTOS FIBRES, page 2. Dr. A.A. Hodgson. j j 95. ATI 21ST ANNUAL MEETING, page 18. Asbestos Textile Institute, j 96. MARKET CONDITIONS, page 30. I 97. PRODUCTION, page 34. j 98. IMPORTS AND EXPORTS, page 36. } 99. INDUSTRY NE7/S, page 38. j ASBESTOS-CEMENT REV137/ NO. 40. Kirchgasse 40, Zurich, Switzerland. 100. 1C1. 102. 103. 104. 105. 106. 107. 108. IC9. 110. 111. 112. 113. 114. 115. 116. 117. 118. 119. 120. 121. 122. 123. A NE'.Y DUTCH POLYTECHNIC INSTITUTE, page 3. ? LEAD AND SINC EXTRACTION PL..ITT IN FRANCE, cage 9. > AN AUTOMOBILE FACTORY IN AUSTRALIA, Dace 9- 5 WELFARE BLOCK OF A FACTORY IN I.!IL;.N, caee 9- i CONCRETE WORKS IN SOUTHERN GERMANY, case 10. ' FACTORY FOR REFRIGERATION PLANT AT BASILDON NEW TONN, page 12. [ SALT MILL AND WAREHOUSE AT GODERICH, ONTARIO, page 17. ? A 3UILDING MATERIALS STORE AT AGADIR, race 20. i FACTORY FOR INDUSTRIAL GAUGES IN NORTHERN FRANCE, pace 22. ; WICKERWORK FACTORY IN NORTHERN ITALY, page 24. [ GLUE FACTORY AT SALZBURG, page 26. { FERTILIZER PLANT AT PORT WHANGARZI, NEW ZEALAND, page 28. ? SODAWATER BOTTLING PLANT IN HELSINKI, cace 30. j A COMPOUND MILL AT BROI.BOROUGH, page 32. ~ r CEMERTVORKS IN SOUTHERN GERM/.NY, page 2,i. A GERMAN MOTORCAR FACTORY, page 37. ! TEXTILE WAREHOUSE AT 3ESANC0N, page 40. : FURNITURE WORKSHOPS IN AUSTRIA, page 41. A TYPE FOUNDERY IN FRENCH SWITZERLAND, page 42. POWER STATION AT LIVORNO, ITALY, page 45- MACHINE TOOL FACTORY IN NORTHEASTERN SWITZERLAND, page 49- f CELLARAGE FOR WINES AT MENDOZA, ARGENTINIA, page 52. FACTORY FOR ELECTRIC BULBS IN SAN SALVADOR, page 53- INCENDIARY DAMAGE TO * TEXTILE PLANT, page 53. . arawnai ASARCO ALV 0005654