Document RpLZZO85qV26X7m6xOZgODg5E

PART 1. PART 2. PART 3. PART 4. PART 5PART 6. PART 7. PART '8. PART 9PART 10. PART 11. ASBESTOS Vol. 3. March BULLETIN No. 2. April 1962 Editor; C.Z. Carroll-Porczynslci CONTENTS Pace MINING ................................................................................. 30 ASBESTOS-CEMENT ............................................................ ASBESTOS TEXTILES ....................................................... 34 42 ASBESTOS FRICTION MATERIALS ................................ 43 REINFORCED PLASTICS ................................................... 44 ASBESTOS JOINTINGS. SEALING AND COATING COMPOSITIONS ................................................................... PLASTIC MATERIALS AND PIPES .I............................ 46 48 ASBESTOS PAPER AND INSULATING MATERIALS ... 50 REFRACTORY FIBRES ....................................................... 52 MISCELLANEOUS ................................................................. 54 REVIEW OF JOURNALS ...................................................... 55 (C) Copyright, Astex Publishing Co., 1962. ASARCO ALV 0007262 ASBESTOS bulletin 30 past 1- MINING. CANADA 11^ ASBESTOS. H.M. Woodrooffe. Can. Mining Journal 1962 83, No.2, p. 117. 196I year was the second in succession to record a significant increase in shipments of group 4 fibre. An additional 15$ of this valuable grade moved to the market. Smaller increases were reported in shipments of group 5 and 6 fibre, but shipment .of 7 group were lower. European Economic Community imports approximately one half of its asbestos requirements from Canada, an amount equivalent to about 15$ of Canadian production.. It is in this group of countr ies that competition from Russian fibre has been most important in recent years. It is significant to note, however, that while the U.S.R.R. supplied 26$ of SCM requirements in 1959, its position declined to 21$ in I960. 116 THE CANADIAN MINERAL INDUSTRY AND ITS GROWING MARKETS. Can. Mining Journal 1961, 83, No.2, p.82. 1961 asbestos industry set a production record with shipments of 1,171,245 tons. The increase in group 4 shipments was largely responsible for the increase in both shipments and values. Advocate Mines Ltd., continued development of a large new mine at Baie Verbe; construction is expected to start in 1962 on a 5,000 ton-per-day mill with initial production scheduled for mid - 1963* 117 LAKE ASBESTOS OF QUEBEC. The Can. Mining & Metallurgical Bull. January 1962, p.66 The net revenue at the Lake Asbestos of Quebec mine in the first nine months of 1961 amounted to #2,484,832 a 45$ increase over the corresponding period of I960. The Black Lake Mine milled 1,295,088 tons to produce 71,122 tons of fibre. Mr. A.B. Davidson, president of U.S.C. says record fourth quarter shipments and proceeds are ex pected. 118 THE CANADIAN ASBESTOS INDUSTRY. R. Guimond, Precambrian (Winnipeg) 34, 1961, May 6-14, 16-22, 24-25, 28-31, June 33, 35-36, 3S-42 Deposits, production and markets are described. The operation of individual companies are briefly outlined. Procedures for quality control are discussed. ASARCO ALV 0007263 31 ASBESTOS BULLETIN 119 MINERAL PRODUCTION 1961. Can. Mining Journal 1962, 83, No.2, p.74. Asbestos production continued to expand and output rose to a record of 1,171,000 tons at ^131 millions, up 5$ in Quantity and 8$ in value from the former high attained in I960. Gains were recorded in all three producing provinces. 1 3321j Quebec 1961 1,098,272 tons I960 ,054,424 a Ontario 27,200 23,284 British Columbia 45,773 40,748 ti J 120 ASBESTOS IN ONTARIO. E'ne. Mining J. January 1962, 163 1 No.1, p.141 Hunch Mines, inactive for some years, has been reactivated to explore two asbestos prospects in Marker and Lamplugh Twps. (Ontanio), east of Matheson. A magnetometer survey has indicated a wide zone crossing both properties believed to be favourable for asbestos deposition. 1 . ; SOUTHERN RHODESIA 121 ASBESTOS IN SOUTHERN RHODESIA. The Mining Journal, March 2,1962 Plans for an expansion programme reported to be going to cost about 3,000,000 are proceeding at Filabusi, Southern Rhodesia. The com pany owning the mine, Pangani Asbestos Mines Ltd., have bought out the nearby Hart asbestos nine. Exploratory work is reported to be in advanced stage at the Pangani mine, the oreboay is said to be rich, and the investigation of the main asbestos deposit complete. 122 MINERALS. The Mining Journal, March 30, 1962, p.323. A consortium of European and South African finances is backing a 1,500,000 development scheme at the Pangani asbestos mine near Filabusi, Southern Rhodesia. The company hopes to produce asbestos worth 2,250,000 a year for export. Most of the capital for the project has come from Switzerland, South Africa, Belgium, Austria and France. 123 MINERAL PRODUCTION - ASBESTOS. Rhodesian Mining Journal 1961, 32, No.412, p.21. Asbestos production for 11 months ended November 1961; 135,309 tons, value 7,394,380. This figure represents 21.25$ increase in tonnage. ASARCO ALV 0007264 asbestos bulletin 32 124 MINES HISTORY No. 24: SHABANIE. Chamber Mines (Rhodesia) J. Sept. 1961, 3, pp. 26-30. SOUTH AERICA. 125 CROCIDOLITE FROM THE KOEGAS-Y/ESTERBERG AREA, SOUTH AFRICA. J.J. Le R. Cilliers, A.G. Freeman, A. Hodgson and H.F.'.Y. Taylor. The geology of the Koegas area of Cape Province is described with particular reference to the occurrence of crocidolite. Twenty-two samples were examined by chemical analysis, X-ray diffraction and differential thermal analysis. 126. AFRICA - MAJOR AS3EST0S SOURCE. July 1961, 82, pp. 57-60. Peter Holz. Can. Mining J. 127. ASBESTOS MINING AT MAMBA HILL, EASTERN TRANSVAAL. The Mining Mag. 1962, IPS, No.2, p.86. This Company is the biggest single producer of chrysotile asbestos in South Africa. At present only grades 4 and 5 are mined but in the near future, grades 6 and 7 will be produced as well. Over the past year African chrysotile has produced an-average of 1,214 tons of fibre a month or 14,574 tons for the year. The company also mines a number of claims under tribute. From these were pro duced 5,760 tons of grade 4 fibre and 4,180 tons of grade 5 for a total of 186,834 tons of ore milled. 128. JEFFERSON LAKE ASBESTOS CORPORATION. January 1962, 24, No.1, p.59 Mining World, Jefferson Lake Asbestos Corporation reports that its engineers, consultants and contractors have revised the flowsheets and are in corporating improvements in the asbestos processing plant now under construction near Copperopolis, California. As a result, completion of the plant and beginning of operations are now scheduled for May 1962. Based on the assaying of cores taken from the property, the estimate of ore continues to increase over the visual estimates originally made. To date, the proven millable ore is estimated at approximately 23,000,000 tons. ASARCO ALV 0007265 33 129- COALINGA ASBESTOS COMPANY. 1962, 24, No.1, p. 59- ASBESTOS BULLETIN Mining V/orld, January i> j Coalinga Asbestos Company, Inc., joint venture of Johns-Manville Products Corporation rand the Kern County Land Company, is scheduled to start operations in early 1962 near Coalinga. It -ill mine and beneficiate chrysotile to produce up to 25,000 tons annually of high quality "shorts" for use in cement, asphalt and vinyl-asb estos products. ' U.S.S.R. 130. 131 AMPHIBOLY ASBESTOS ON THE WESTERN SLOPE OP THE' NEAR-POLAR URALS. M.V. Fishman and 3.A. Goldin. Trudy Comi Filiala Akad. Na.uk S.S.S.R. 1959, 7, No.7, pp. 103-107 MAGNESIUM ANTHOPHYLLITE aSEESTOS FROM TUVA. G.V. Pinus. Zapiski Vsesoyuz-. Miner"-!. Obshchsstva 1961, 9ir0rT ,pp 296-298. 9 t /PHILIP PINES 132 PHILIPPINES ASBESTOS. Eng. Mining J. December 1961, _ 162, No.12, p. 164. Several asbestos deposits in Zambales province cn the west coast of Luzon have excited interest in local mining circles. Other deposits have been found in Ilocos, Pangasinan and parts of Mindanao but no development has been done. The Philippine Bureau of Mines is investigating the deposits and will make a detailed report. AUSTRA...L..IA. 133 MORE BLUEASBESTOS FROM AUSTRALIA. 29, 1961. Mining J. Sectember t * 134 CANADIAN PATENT 628,028 INSTALLATION FOR CLASSIFYING ASBESTOS FIBRE. L.P. Bonneau (to Quebec Dept, of Mines). September 26, 1961. 135 U.S. Patent 2,996,183. CONVEYOR FIBRE CLEANER. Russum, R. Gaillard. (to Johns-Manvilie) Air jets from opposite sides clean the dust from asbestos fibres as ;they travel along an endless belt. > ^ i ASARCO ALV 0007266 ASBESTOS BULLETIN P/.RT 2. ASBESTOS-CEMENT 136. USING ASBESTOS CEMENT PIPES TO LINE ARTESIAN NELLS. P.A. Anatol'evskii. Liont. i spets. rab. v stroi. (Assembling and Specialised Operations in Construct) August 1961, 23, No.8, pp. 20-21. 34 137 LIGHTWEIGHT PANELS POR THE WALLS AND CEILINGS OP COMPRESSOR AND PUMPING STATIONS. V.M. Pusanov. Stroi. truboprov. (Pipe-line Construct.) Oct. 1961, 6, No.10, pp. 28-30. 138. PIPELINE REPLACES RAILROAD AS PULP MOVER. Chen. Eng. Feb. 19, 1962, 69, No.4, pp. 74, 76. Great Northern Paper Co. has installed seven miles of epoxy-lined asbestos cement pipe to carry sulphite pulp to its paper mill as East Millinocket, Maine. 139 U.S.P. 3,003,553- FORMING TUBES OF ASBESTOS-CEMENT. Johns-Manvilie Corp. This Invention relates to a machine of the type including tv/o units for the continuous manufacture of asbestos-cement pipes without intermediate stopping and loss of time. 140. RUSSIAN STANDARD (GOST) FOR PORTLAND CEMENT FOR ASBESTOS CEMENT ARTICLES. Byull. Stroit. Tckh. 1961, 18, No.11, 16-17 (Erratum)p.24). GOST 9835-61 "Portland cement for the production of asbestos cement articles" contains the specifications for the compressive and ten sile strength, chemical composition, particle size, packaging etc., of tv/o portland cement grades, 500 and 600, used in asbestos cement compositions. 141 ON PROVISIONAL TECHNICAL INSTRUCTIONS FOR CARRYING OUT AND ACCEPTING INSTALLATION WORK OF ASBESTOS CEMENT UNDERGROUND GAS PIPELINES IN TOWS, INHABITED PLACES AND INDUSTRIAL ESTATES. Bull. Stroit. Tekhn., 1961,18,No.12,8-9 These instructions (CH I85-6I) rclcate to gas pipelines working at low pressures of up to 0.05 kg/cm . In these pipelines, apart from cast iron connecting pieces (see the following abstract), the ASARCO ALV 0007267 35 AS33ST0S BULLETIN use of asbestos cement double-collar couplings is also permissible. In this case, apart from synthetic resin packing rings, the joints are additionally tightened using liquid polymer-cement-sand compos itions. 142 ON THE USE OP ASBESTOS CEMENT TUBES FOR UNDERGROUND GAS PIPELINES. Bull. Stroit. Tekhn. 1961, 18, No.12, 30-31. The replacement of steel gas pipelines by asbestos cement ones is very important from the standpoint of national economy. Their mechanical strength is not so high as that of steel pipes, but they are less expensive and possess a high corrosion-resistance. Based on experiments carried cut in the Andishan district (Bashkirskaya ASSR)", in Zhitomir district and other places, "Provisional technical instructions for planning asbestos cement underground gas pipelines outside inhabited places and industrial estates" (CH 182-61) specify in detail technical requirements for asbestos cement gas pipelines working at pressures cf up to 5 kg/cm. }l} ) : , ! | 143 BRITISH PATENT 870,05 BONDED ASBESTOS BOARD - Joshua. IMPROVEMENTS IN IMPREGNATING CEMENTJames Henry & Thomas Davis, Elwyn Process for impregnating asbestos cements v/ith polysiloxane solut ions . 144 PROBLEMS IN DEVELOPING THE PRODUCTION OF ASBESTOS CEMENT PIPES. F.N. Kitaev. Strc-i. mat. (Bldg. Materials) August 1961, 7, No.8, pp. 19-23. > ir 145 GEM. P.1,123,610. MACHINE FOR CORRUGATING FIBRE CEMENT SHEETS. K.A. Oesterheld. t A machine for corrugating fibre cement sheets comprises a suction box divided lengthwise into separate compartments and provided with a rigid corrugated cover with suction apertures and, on the top of the rigid cover with a sheet of a flexible air-permeable material, which is stretched by means of weights. \ 146 SOUTH AFRICAN P.E. 61/1299. FORMING SHAPED ASBESTOS CEMENT PRODUCTS. Johns-Manville Corp. A process is described in which a mixture comprising asbestos, cement water and a hydromodifier is formed when in the plastic state and allowed to solidify. ASARCO ALV 0007268 ASBESTOS BULLETIN 36 147 LARGE ASBESTOS-CEMENT CORRUGATED SHEETS. I Koppel. D. Olaru and L. Barbulovici. Bull. Stud. Cercetari Stiint. Constr. Mat. C.nstr. Architect. Sis (INCERC-ASCAS, Bukuresti), I960, No. 3- 214-225* Large asbestos cement corrugated roofing sheets for factory build ings and the like are described. The dimensions of these sheets are: 1800 x 1210 x 6 mm, the rib spacing is 140 mm., the rib height is 45 mm. The tensile strength of these places is 160 kg/cm? The price of these plates (per sq. metre) is lower, by 2.8 - 4?--, than that of 1200 x 678 x 5.5 mm plates. 148 GERMAN P.1,123,244 PRODUCTION 0? PLATES OR SHAPED BODIES FROM FIBRES, ESP. GLASS FIBRES AND HYDRAULIC BINDERS OR GYPSUM. Institut fur Hobztechnologie und Faserbaustcffe. A dry mixture of fibres and binder is interspersed betv/een sheets of a moisture-containing web and subjected to hot-pressing, whereby steam generated in the moist web is condensed within the dry mixture effecting the setting of the latter. 149 THE STRENGTH AND FROST RESISTANCE OF AS3EST0S CE' ENT SHEETS DEPENDING ON THEIR DENSITY. I.I. Bernei. Stroit Mat, 1962, 8, No.2, 6-9. The application of increased pressures in the production of asbest os cement sheetSp(up to 200 kg/cirr) resulted in increased density (up to 1,83 g/cnr), increased bending strength (up to 203 kg/cm~ for corrugated roof tiles, and up to 407 kg/cnr for experimental sheets) and increased frost-resistance (the weight of sheets produced under different pressures was practically the same) 150 GERMAN P.1 ,12 2,4 30. MACHINE FOR CORRUGATING PLASTIC SHEETS. F.L. Smidth & Co. A/S, ^Copenhagen. A machine for corrugating fla.t plastic sheets of asbestos cement comprises two sets of forming bars provided with means for horizont al and vertical positioning. 151 RUSSIAN STANDARDS FOR DRAW ZINC-PLATED NAILS FOR ASBESTOS CEMENT ROOFINGS (GOST 9870-61), Byull, Stroit. Tekhniki, - 1962, 19, No.2, 26. ASARCO ALV 0007269 37 ASBESTOS BULLETIN 1 52 GERMAN P. 1 ,122,89 3 * MACHINE FOR MECHANICALLY SEPARATING ASBESTOS CEMENT SHEETS FROM MOULDS AND MECHANICALLY STACKING THE PLATES AND MOULDS SEPARATELY. Eternit A.-G. This machine is provided with means for holding the mould down when the asbestos sheets (formed and ready for separation) is lifted up wards by means of a suction device. 153 ASBESTOS-CEMENT SUBSTRATES AND THEIR PAINT REQUIREMENTS. New York Society for Paint Technology. Official Digest 1961 , 33, 442, pp. 1 346. *. This paper describes the results obtained with a variety of paints selected as primers for normal-cured asbestos-cement sheets topcoated with a chrome green pigmented, linseed oil house paint. Several surprising and unexpected observations were made. A simple laboratory method, devised for testing the effective ness of a primer as a barrier between an alkaline substrate and an alkali-sensitive topcoat, is described ana illustrated. 154 EXPERIMENTAL MODERNISATION OF COMBINED CORRUGATINGSTACKING MACHINES. S.G. Kutikov. Stroit. Hat., 1962. 8, No.1, 23-26. All the types of combined ccrrugating-stacking machines used at present in Soviet Union for the production of asbestos cement tiles and sheets exhibit certain shortcomings. '"The author describes in detail a successful modernisation of a CM-279 corrugation and a Brotsenskii-type combine. 155 INSTALLATION CF ASBESTOS CEMENT PIPELINES FOR SURFACE WATER MINS WORKING UNDER PRESSURE. Byull. Stroit. Tekhniki, 1962, 19, No.2, 20-21. This instruction relates to the installation of asbestos cement 2 pipelines for surface water mains working under a pressure of 12kg/cm 156 A FIVE YEAR EXPOSURE STUDY OF EMULSION PAINTS. New York Society for Paint Technology. Official Digest 1961, 33 442, pp. 1455. Application of 36 paints to glazed asbestos shingles are discussed T ASARCO ALV 0007270 ASBESTOS BULLETIN 38 157 IMPROVED APPARATUS AND PROCESS FOR MANUFACTURING CEMENT ARTICLES. British Patent 885,188. Patent & Licensing Corporation. An object of this invention is to provide an improved process and apparatus for the manufacture of asbestos cement products by a dry process. Figure 1 is a diagrammatic cross section of a machine and Figure 2 is a perspective view of a section of pipe made in accordance with this invention. With reference to Fig. 1 there is shown a hopper 10 which ex tends the width of the machine and contains agitator rolls 11 adap ted to mix and prevent packing of the contents of the hopper. The hopper may contain a mixture of cement, asbestos and sand. Finger roller 12 controls the feed-through opening 13 extending across the bottom of the hopper the width of the machine The material falls down upon a pair of intermeshed star-shaped gears 15 or finger rolls which tend to fluff the materials and distribute it more evenly acr oss the width of the machine. The material then falls upon a pony belt 16. Another fingered roll 17 continues the levelling process as the pony belt carries the material past a rotary brush 18. The material again passes through intermeshing gears 19, similar to gears 15* By the use of this combination of gears, pony belt and brush, the material is finally dropped on a moving felt 20 in a pa ttern which may be described as a raindrop pattern. The felt is preferably a papemalcer's blanket or felt which is continuous and passes in front of a spray of water 21 and whipper 22 for thw two-fold purpose of removing any .particles of cement or the like which may have passed the mandrel.' The excess water is pressed out by passing the felt over a number of rollers, or if nec essary, between press rolls before passing under the hopper where it receives the raindrop pattern of cement. The felt 20 passes in contact with a smooth mandrel 23 which is urged against opposition roll 24 over which the felt passes. Any one of a number of means may be used to urge the mandrel against the opposition roll as are well known in the art. The mandrel may be urged simply by its own weight but preferably a third roll or another pair of rolls may be applied against the mandrel in order to exert a pressure against the cement particles which are building up on the mandrel The pre ssure between the mandrel and the opposition roll causes sufficient water to be squeezed from the felt wetting the cement particles. The thickness and other contacts of the felt can be controlled as well as the water applied to it such that the amount of water squee zed out will be sufficient to set the cement, but not too much to form a slushy body which is not easily pressed. The whole felt to gether with various guide rolls are mounted on a suitable support 25* ASARCO ALV 0007271 39 ASBESTOS BULLETIN There is also shown a hydraulic lift device 26 which may be susp ended from an overhead rail 27 such that mandrels containing the cement composition may be quickly removed and other mandrels put in place. While the papermaker's felt is preferable, the device may * also utilize other webs which may or may not carry their own water. In the use of a web not carrying water, a spray may be located above | the web either before or after the application of the cement part- f. icles. One formulation which has been found suitable for forming \ an asbestos-cement pipe involves the use of 23$ by weight of 4K f asbestos, 48$ of Portland cement and 29$ of silica or finely ground , sand passing a 200-mesh screen. Other proportions, other types of i asbestos fibre, or introducing other fibres such as fibreglass, rock J wool, v/ood fibre and the like may be utilized. Other water settable i cements may be used, and these include, besides Portland cement, lumnite cement or piaster. ! I The pipe may be removed from the mandrel by any of the known methods including introducing a bubble of air between the rotating mandrel and the surface of the pipe. The pipe may be air cured, autoclaved or both. . It is claimed that the apparatus .and process have a number of outstanding advantages. The equipment is less expensive than wet process equipment, there is no problem of water disposal, no problem of formulating to permit drainage .and the strengths of the products obtained are very high because high pressures can be applied before the material has had an opportunity to sot up. For any given pressure applied to the mandrel the pipe will be stronger than equivalent wet process pipe made at the same pressure. Since there is no problem of drainage as compared with the wet process, the machine may attain very high speed and consequently it is possible to make a product, as for example, a pipe of a given thickness, say i" by the use of a large number of layers of asbestos cement. The prod uct made with a larger number of layers other things being equal, tends to be stronger than a product made with fewer layers. Asbestos-cement pipe made in accordance with the present process and apparatus may be used for air ducts, sewer pipes and sewer mains or electrical conduit. The higher pressure pipe may also be used for water supply. Flat sheets made by the present process have limited shrinkage and excellent strength. , : !. ( ' 1 { 168 RUSSIAN P.140,722. WATERPROOFING PRODUCTS OF CONCRETE ASBESTOS CEMENT, FLASTER ETC., I.V. Provinteer. The above products are coated or impregnated with a 30-35$ solution i' ASARCO ALV 0007272 I ASARCO ALV 0007273 ASBESTOS BULLETIN 42 of vulcanised rubber (scrap rubber) in green or anthracene oil. The rubber content may be reduced by adding to the solution a high melting point bitumen (up to 60$). Coloured coatings are obtain ed by the addition of up to 10$ of a polystyrene emulsion contain ing the desired pigment. A silver-coloured coating may be prod uced by adding 10$ of aluminium powder to the rubber solution. The coating may be applied in the cold or, for complete hardening, at 140-180. Coated surfaces can be washed with cold or hot water and soap. PART 3- ASBESTOS TEXTILES. 159 POLYURETHANE FOAM-ASBESTOS PROTECTIVE MASKS. Officiel des Matieres Plastiques, 1961, 6, No. 80, 344-345* A protective mask for high temperatures, developed by Allied Chemical Co. consists of a combination of semi-hard polyurethane foam and aluminium-coated asbestos cloth which reflects the heat radiation. 160 -LIGHTER REINEORCED PLASTIC. 189, No.1. p. 133. Iron Age, January 4, 1962, Brief news note about asbestos cloth reinforced nylon pl.astics Tayloron 5031 and 5033, made by Taylor Fiber Co., Valley Forge, Pa. 161 D.P. 887,304. METHOD AND APPARATUS -FOR APPLYING SYNTHETIC RESIN TO A SUPPORT. J. Szabady. This invention concerns a method of applying a softenable thermo setting resin layer to a sheet-like support in which the resin is heated to a temperature above its softening point and extruded in the form of a foil onto the support (e.g. asbestos paper or cloth) while still soft. 162 EFFECT OF INFRA-RED HEAT ON TENSILE STRENGTH OF TWO REINFORCED PHENOLIC LAMINATES. Forest Product Lab. U.S. Department of Commerce AD-255 679* The study was conducted on phenolic laminates made with either glass or asbestos fabric and machined at 45 degrees to the natural axes. 163 GERM. P.1 ,123,305- A.S3EST0S DIAFHRAGM. Pittsburgh Plate Glass Co. The diaphragm is made from asbestos fabric coated with chlor inated drying oil. ASARCO ALV 0007274 43 ;.S3EST0S BULLETIN 164 ASEESTOS FIBRES MATERIALS AS SUBSTITUTES FOR ASBESTOS FABRICS. N.T. Dodnov and K.V. Khartke, Kanchuki i Rezina, 1961, 20, No.11, 35-38. Non-textile grades of asbestos fibres can be used for the product ion of materials which can replace expensive woven asbestos fabr ics in many applications such as, for instance, heat insulation. An example of materials of this type is "asboteploizol". It is produced by fozming a felt from separated and cleaned asbestos fibr es* ,, impregnating it with an agueous emulsion of thermoreactive organosilicon resins and drying the product. Thermc-insulating properties of ''asboteploizol" exceed by far those of asbestos fabrics. Another material of this type "asboplast" produced using chloroprene later as a binder, is an excellent reinforcing agent for "asboplastics" which have high mechanical strength. 165 GERM. ?.1,123,296. DIAPHRAGMS FOR ELECTROLYTIC CELLS DEMAG - Elektrometallurgie G.m.b.H. The edges of an electrolytic diaphragm, made e. . of asbestos cloth are impregnated with a synthetic resin having a wax-like consistency and a low melting point, e.g. polyethylene wax, and then the resin is irradiated with gamma-rays until it acquires a rutrber-like consistency. PART 4. ASBESTOS FRICTION MATERIALS. 166 U.S.P. 3,003,980. EPOXY BASE FRICTION MATERIAL. General Motors Corp. The composition for an automobile starter motor armature brake, washing machine clutches etc., consists of: Epoxy resin - 100 - parts by weight: Short fibre .asbestos - 8 - parts by weight Cardolite(cashew nut) - 8 - parts by weight Triethylene tetramine (accelerator) - 4 - " The above composition enables one to apply the material to be cured in its place of use rather than requiring a preformed slab to be applied as such under heat and pressure. It is further cl aimed that laboratory tests show that in applications involving temperature not greater than about 450F, the friction material of the present invention has frictional properties equivalent to or better than conventional friction materials using phenolformaldehyde binders and made under conditions of elevated temperatures and pressures. ASARCO ALV 0007275 ASBESTOS BULLETIN 44 167 PRODUCTION OF NS1" TYPE OF BRAKE LININGS THROUGH HEAT PROCESSING. Ind. Heating December 1961, 28, No.12, pp. 2431-2432, 2434, 2444-2445- 3rake lining manufacture at Chrysler Corp.'s Cycleweld Chemical products Co. is described. 168 ANTIFRICTION COMPOUNDS BASED ON EPOXY RESINS. O.L. Petrov. Soviet Plastics. January 1961, No.1, p.40. Plastics based on epoxy resins are now widely used as antifriction materials. 169 SELECTING THE RUBBER TYPE FOR THE MANUFACTURE OF ASBESTOS FRICTION PARTS. I.T. Tarasenko & I.M. Griasnova. Xauch. i Rez. (Crude and Vulcanized Rubber) Apr. 1961, 20, No.4, pp. 22-24. PART 5- REINFORCED PLASTICS. 170 "RUSSIAN P.141',172. FERRO-CERAMIC MATERIAL. D.T. Zelenskii. A ferro-ceramic material having high friction co-efficient, high wear and heat-resistance and^good surface workability, is made of 55-65$ of iron powder, 15-20$ refractory clay, 5-10$ asbestos (cal cined at 1100C) and 15-18$ sodium silicate. The mixture is press ed or moulded, air-dried for 3-5 days, then-sintered in a meutral or reducing atmosphere at 1200-1300C and slowly cooled. 171 Soc. Plastics Ind., 17th Annual Tech. & Management Conf., Reinforced Plastics Div., Chicago, 1962., the following papers were presented: ASBESTOS IN POLYESTER PREMIX MOULDING. R.T. Crouch & J.J. Thomas. Physical properties are given for premixes containing asbestos alon as well as asbestos-glass and asbestos-sisal mixtures. 172 ASBESTOS REINFORCED THERMOSETTING RESIN PIPE AND FITTINGS FOR USE BY THE CHEMICAL PROCESS INDUSTRY. R.T. Crouch and others. Development and physical properties of Johns-Manville1s Chemtite pipe are described. ASARCO ALV 0007276 45 ASBESTOS BULLETIN 173 USE OF POLYESTER RESIN IN AUTOMOTIVE 30DY SOLDERS. E.R. Pelton. Asbestos floats are mentioned as one of the commonly used fillers. 174 AEROSPACE USE OF PLASTIC HARD'JARE AND THERMAL INSULATION. James J. Sewell & James K. Kuno. Asbestos-filled phenolics o.re among the materials discussed. 175 STUDY OF THE VARIABLES AFFECTING THE CORROSION RESISTANCE OF PREMIX. J. Yovino, B.E. Boeker & A.F. Torres. The effects of fillers, reinforcements and resin systems are evaluat ed for polyester premixes. Chrysctile floats and anthophyllite asb estos are among the fillers. 176 ASBESTOS-REINFORCED PLASTICS. Dominick V. Eosato. This bulletin provides current information on the use of asbestos in reinforced plastics. 177 3.P. 890,304. IMPROVEMENT RELATING TO BOARDS OF RESINIMPREGNATED MATERIALS. British Transport Commission. The notice-boards and signed boards of laminated construction contain a reinforcing sheet e.g. asbestos. 178 U.S. PATENT 2,993,799- PLASTIC COMPOSITION. C.L. Blake. The lightweight constructional material is prepared from the follow ing mixture: Asbestos Plastic Plasticizer Inert filler 12.755* 21.255* 8.5 - 155* 42.55^ The composition is suitable for manufacture of railroad ties switch board plates and containers. 179 B.P. 886,868. ACETYLENE CONTAINER FILLER AND METHODS. Chemetron Corp. U.S.A. High porous filler for acetylene contains 20-305* asbestos fibre. ASARCO ALV 0007277 ASBESTOS BULLETIN 46 180 BRITISH PATENT 885,446. COMBUSTION CHAMBER RESISTANT TO HIGH TEMPERATURES. Haveg Industries Inc. Haveg Industries recently patented a special process for the manuf acture of rocket combustion chamber which are protected by one of more layers of phenol-formaldehyde resin and acid washed asbestos fibre. In the quoted example the rocket tube blast liner was placed in service with a motor rocket tube and fired at a temperature of over 2205C. The velocity of the gas in the tube was about 0.7 to 1.5 times the velocity of sound. It is claimed that the phenol-formaldehydeasbestos fibre liner withstood the blast and the heat of the gases during the entire flight period. The tube on recovery was examin ed and found to be intact within the limits of burning time (several minutes). A carbonized surface layer on the liner protected the remainder of the tube against erosion and further decomposition. The outside surface of the liner was completely unchanged as were the parts of the rocket which required protection from the heat, blast and corrosion of .the combustion gases. PART 6 JOINTING, COATING. SEALING COMPOSITIONS. 181 B.P. 887,277. ELECTRIC ARC WELDING PROCESS. Union Carbide Corp. This invention relates to a process of arc welding with a fusible electrode, in which the electrode is provided with a coating compos ition. Asbestos is mentioned as a filler. 182 ASBESTOS-SYNTHETIC RESIN COATINGS. W. Surowiak, Tworzywa, Gurna, Lakiery (Warszawa) I960, jj, No.9, 272-277 Asbestos-synthetic resin coatings can be advantageously applied to metallic machine parts sliding without lubricants. Suitable mater ials include certain asbestos laminates or asbestos pressed materials, such as e.g. "Retinax" (an asbestos-barite composition). 183 FRENCH PATENT 1,284,834. COATING COMPOSITIONS. Conch Intern. Nethane Ltd. Compositions for coating walls of containers for storage of liquids at low temperatures comprise 45-53 parts of epoxy resins, 7-10 parts of A-lpO,, 33-45 parts of asbestos and 3*5-4.5 parts of a polymeris ation agent for the epoxy resin, preferably diethylaminopropylamine. The polymerisation is pref. carried out at about 93C. ASARCO ALV 0007278 47 ASBESTOS BULLETIN 184 BELGIAN PATENT 601,126. HEAT RESISTANT SHEET. VEB Leuna V/erke Walter Ulbricht. A sheet resistant to heat, acids and alkalis consists of asbestos glass or synthetic fibres bonded together with a binder comprising polyolefines and, if desired, poly-isobufcylone,.together with liquid phenol-formaldehyde resins and mineral fillers such as kaolin, BaSO. etc. A natural or synthetic rubber-adhesive may also be added. In an example, the material consists of 4 kg. polypropylene, 11 kg. polyisobutylene, 45 kg. BaSO^, 30 kg. kaolin, 38 kg. asbestos fibres, 10 kg. liquid phenol-formaldehyde resin and 0.6 kg. colouring matter. i 185 CHEMICALLY STABLE ASBESTOS-VINYL MASTICS. Soviet Plastics, February 1961, No.2, p.40. In the Soviet Union an asbestos-vinyl mastic is at present used ;for lining the external and internal surfaces of equipment, foundations, coverings etc. An asbestos-vinyl mastic modified with bitumen or graphite powder is recommended for lining equipment coming into contact with 30# HpSO.,. Asbestos-vinyl mastics modified with epoxy resin may be used for cementing tiles to floors in contact with 30% sulphuric acid, 5% nitric acid and 30% alkali at room temperature. : f . j j r ' 186 RUSSIAN PATENT 141,093- LININGS FOR INDUCTION HEATERS. W.S. Sassa et al. Linings for induction heaters consist of alternate layers of asbestos paper and a refractory plastering composition. Suitable plast ering compositions for induction heaters working at temperatures up to 900C tfnom 950 to 1300C) comprises: water glass 40-50% (35-45%) sodium fluosilicate 5-6% (1.5-3%) nnd ground chamotte 40-60% (55-62%). The thickness of asbestos layers is 0.5-3mm. and that of plastering layers is 0.3-3nim.; the total thickness of the lining is l0-30mm. These linings possess very good heat-insulating properties. j j | 1 j 187 GERMAN PATENT 1,126,299. PROCESS FOR THE PREPARATION OF j ASBESTOS SHEETS FROM AQUEOUS SLURRIES. Armstrong Cork Co. ; An aqueous slurry of chrysotile asbestos fibres is treated with a ' water-soluble condensation product of sulphonated naphthalene.and formaldehyde, which reacts with the surface of the asbestos fibres, j The resulting slurry is treated with a synthetic rubber latex, and j the ;rubber is uniformly deposited on the asbestos fibres. Then, ; sheets of coated asbestos fibres are prepared by known methods. 1 ASARCO ALV 0007279 asbestos bulletin 18 part 7 PLASTIC MATERIALS AND PIPES. 188 B.P. 886,375- IMPROVEMENTS RELATED TO FLOORING. Semtex Ltd. The upper layer of a composition comprises filler (7R asbestos) in intimate admixture with a binder based on a chlorosulphonated poly olefine. 189 TECHNICO-ECONOMICAL FACTORS OF THE PRODUCTION OF VARIOUS SYNTHETIC FLOORING MATERIALS. V.P. Storozhenko and F.N. Serkova Stroit. Mat. 1962, 8, No.2. 18-21. Conventional flooring materials, like boards, parquet plates etc., are expensive and unsuitable for the modern building methods. A number' of new flooring materials are proposed including, for instance asbestos-polyvinyl chloride plates (thickness of 2 mm) and asbestoscoumarone plates (thickness of 3-4 mm). The use of these synthetic materials may result in 0, reduction of total yearly expenses on floor ing materials in S.5.S.R. by as much as 80 mil. roubles. 190 SYNTHETIC RESIN FLOORINGS. J. Plantier. Rev. Belg. Matieres. Plast. , 1961, 2_, No.4, 339-345- Various types of synthetic resin floorings (continuous or consisting of plates) are described. The most frea_uently used reinforcing mat erial is asbestos, in the form of powder or fibres. It is used in amounts varying from 30$ to 65$ (with respect to the weight of the composition). 191 RUSSIAN PATENT 138,039- PREPARATION OF SYNTHETIC RESIN N.I. Burda. Bewzyl chlondi is subjected to a thermal condensation (with liber ation of HYi ) in the presence of hexachloro-cyclohexane acting as an initiator. The resin obtained can replace coumarine resins used normally in the production of asbestos-resin tiles. 192 PLASTIC-LINED SPUN CONCRETE PIPE BECOMES INCREASINGLY POPULAR IN GERMANY. Pipes & Pipelines, March 1962, p.49- One of Germany's leading manufacturers of concrete pipes has success fully combined the two materials to give a range of products which are becoming popular, particularly for use on heavy industrial sites. ASARCO ALV 0007280 49 ASBESTOS BULLETIN 193 BRITISH PATENT 888,899. PANELS FOR STRUCTURAL AND N0N-3TRUCTURAL WALLS, PARTITIONS, FLOORS AND ROOF DECKING. Shearwater Ltd. A panel comprises a pair of facing sheets composed of asbestos con taining material between which is interposed an infil or core of expanded resin e.g. polystyrene and a frame bounding said core. 194 REPORT ON INVESTIGATIONS INTO THE USE OF PITCH FIBRE PIPE FOR CARRYING CHEMICAL SOLUTIONS. Pipe and Pipelines March 1962, p.84. This report covers a series of tests carried out at the request of Pitch Fibre Pipe Association to provide factual information on the suitability of pitch fibre pipes in various circumstances. 195 UNPLASTICIZZD PVC PIPES AND FITTINGS. D.A. Trebucq. Applied Plastics, April 1962, p.27. The author discusses some of the recent developments, now available to industry in PVC pipes and fittings and their applications. 196 PITCH FIBRE PlrES. Pipes & Pipelines, March 1962, p.80. Pitch fibre drain pipes have been specified for use as foul drains in the North Klang Straits project in Malaya, for Malayan Railways. 197 NSW GLASS PIPE ENABLES RUSSIANS TO MANUFACTURE CONCRETE RADIATORS. Pipes & Pipelines, February 1962, p.76. The radiators contain a heating coll of a special grade of glass pipe. It is claimed that they are relatively chea,p, require the minimum of space, are easy to install and hygienic and they permit considerable saving in metal (a factor of groat importance in the U.S.R.R.) 198 POLYPROPYLENE PIPE PRODUCTION IN ITALY. Pipes and Pipelines, February 1962, p.51. The Firm Montecatini of Milan is now supplying 'Moplen' polypro pylene to a large number of pipe and pipe-fitting manufacturers throughout the country. ASARCO ALV 0007281 ASBESTOS bulletin part 8 ASBESTOS PAPER AND INSULATING MATERIALS. 199 U.S.P. 3,001,882. THERMAL INSULATING MAT. Corning Fiberglass Corp. Asbestos is mentioned as an additive. Owens- 50 200 RUSSIAN PATENT 142,178. HEAT - AND SOUND - INSULATING MATERIAL BASED ON ASBESTOS AND ALUMINIUM POWDER. E.P. Druzhinina et al. A heat - and sound - insulating material having a low bulk density comprises 85-90$ of chrysotile asbestos and 10-15$ of aluminium powder. 201 BELGIAN P.604,941. N0N-IMFIAMMA3LE FILTER MATERIAL. Comp, de Saint-Gobain. A dispersion of cellulose, glass fibres and asbestos is prepared in an aqueous metal silicate solution in such a way that the cellulose is swollen by the alkali metal silicate; then Cn Clg is added in order to precipitate calcium silicate. The suspension obtained is treated, after the addition of other additives used in paper produc tion by known methods to obtain a sheet of filter material. A vinyl resin, e.g. polyvinyl acetate, may be added in the form of an emul sion to the aqueous dispersion of the mineral fibres before the addition of cellulose. 202 U.S.P. 3,005,745. INORGANIC PAPERS AND METHOD OF MAKING SAME. General Aniline and Film Corp. In the preparation of paper from siliceous stock such as silica, fibres, glass or blue asbestos fibres the addition of minor amounts of a polyvinyl lactrom results in the product having high strength and flexibility. 203 ASBESTOS: GENERAL, PRODUCTION, PROCESSING. Part 31. Gummi Asbest Kunststoffe. Oct. 1961, 14, pp.928, 930, 932, 934. A continuation of the discussion of asbestos speciality papers is followed by the first section on their uses, in this case in the electrical industry. ASARCO ALV 0007282 51 ASBESTOS BULLETIN 204 GERMAN PATENT 1,117,031. PRODUCTION OP HEAT-RESISTANT ARTICLES PROM SILICON-CONTAINING FIBRES AND A BINDER. L.O.F. Glass Fibers Co. As lurry is prepared from silicon-containing fibres (preferably glass fibre) fillers (such, as silica, alumina-silica, aluminium hydroxide, alkali or alkaline earth metal sulphate or alkaline earth metal carbonate in grain form; asbestos can also be used) and an inorganic binder (consisting of colloidal silica, alumina, aluminium phosphate or their mixture). Prom this slurry, a fibr ous felt is formed and, subsequently, dried. 205 GERMAN P.1,122,242. PROCESS FOR THE PRODUCTION OF A HEAT AND SOUND - INSULATING LINING FOR WALLS AND THE LIKE. J.W. Roberts Limited Midland Works. A heat - and sound - insulating lining is produced by spraying e.g. a wall with a mixture of asbestos fibres and a liquid binder, and compressing the coating using a tool provided with protrusions form ing a desired pattern which thus imprints this pattern on the surf ace of the lining. PART 9- REFRACTORY FIBRES. 206 ELEVATED TEMPERATURE BEHAVIOUR OF FIBRES. Stanley Schulman. U.S. Dept, of Commerce AD-267, August 1961. A study was conducted to determine the mechanical behaviour of fibres at temperatures up to 2000F for varied periods of time. These fib res are candidate materials for decelerators, .and expandable and rig id structures for satelites or space vehicles. The fibres tested included: Glass textiles, synthetic fibres metallic textiles of heat resisting alloys, Tungsten and Molybdenum. 207 INVESTIGATION OF GLASS FIBRE STRENGTH ENHANCEMENT THROUGH 3UNDLE DRAWING. Armour Research Foundation. U.S. Dept, of Commerce AD-259 754, April 1961. Attempts were initiated to develop methods capable of producing glass fibres on a production quantity basis having a strength of about 550,000 to 600,000 psi. Materials to be used for the fibres will be various glasses such as E glass and other high strength, high modulus glasses in rod form. ASARCO ALV 0007283 asbestos bulletin 52 208 STRUCTURAL FABRIC PROGRAMME. Goodyear Aircraft Corp., U.S. Dept, of Commerce AD-266 5OO7 October 1961. A programme, as related to aerospace applications was initiated to provide a means of manufacturing large low-density AIRMAT structures nlade of metallic cloth and yarns capable of small volume packaging. 209 IMPROVEMENT OF REINFORCED PLASTICS. General Electric Co. Quarterly Progress Rep. U.S. Dept, of Commerce AD-266 277, September 1961. Development of hollow-glass and quartz-fibre-reinforced plastic specimens and the evaluation of their mechanical thermal and electr ical properties was iniated. Investigation showed that manufacture of small diameter E-glass hollow fibres is feasible. Simultaneous drawing of 35 E-glass fibres produces a uniform outside diameter but with variations in wall thickness. E-glass because of impurities, has a tendency to boil, quartz does not. Drawing cf single hollow filaments of quartz results in reasonable consistent geometrical dimensions. 210 GERMAN PATENT 1,120,045. PROCESS FOR EONDING OF METALS. Deutsche Gold - und Silber - Scheideenstalt. A fibre web or matt (gloss fibres, asbestos or sisal) is impregnated with a compound containing a reactive Cl atom, or with a substd. N-dialkylamine (containing at least one .aromatic group), or with a tert. aromatic amine, and, optionally, an accelerator such as a copper compound or an organic sulphur compound. After impregnation the web is dried for a prolonged time period. For use, the impreg nated web is coated with an adhesive of the type used for metal join ing (containing e.g. monomeric methylmethacrylate, polystyrene, net-- pren, acrylic acid and a peroxide hardening agent) and then inserted between the metal surfaces to be joined (without using any pressure). The joint hardens after one day. 211 B.P. 889,815. BONDING OF FIBROUS MATERIALS. The Distillers Co. Ltd. This invention relates to bonding of fibrous materials e.g. asbestos in which no heating is required. In the quoted example 25 parts by weight of asbestos fibre were mixed with 28.4 parts of sodium silicate. The resulting mixture was compressed into cylindrical mould at 90 lbs/sq. inch, pressure. The moulded mixture was treated for 10 seconds with gaseous carbon dioxide. A hard compact block of mater ial was obtained which was resistant to attrition. i ASARCO ALV 0007284 l in 53 ASBESTOS BULLETIN 212 'V.G. Cox & H.L. Crispin. FILAMENT WINDING HADOMES AND MISSILE NOSE CONES. Glass Ind. 42, 1, 33 (1961) A brief description is given of the techniques, equipment and pro cedures used in filament winding resin - impregnated quart fibres on a mandrel. 21 3- SILICA-BASE PLASTIC FOR HIC-H TEMPERATURE USE. Mat in Design Engineering, 55, 1, 170 (1962) T3 v m w t 214. PHENOLIC LAMINATES FOR ABLATION APPLICATIONS. Design engineering, 55, 1, 7, (1962) Mat. in 215 U.S. PATENT 2,916,177. METHOD AND MEANS FOR COATING OF FILAMENTS. Owens-Coming Fibergins Corp. 216 U.S. PATENT 2,979,424. METAL COATED GLASS FIBRES AND METHOD OF MAKING TKjnvl. Owens-Coming Fiberglas Corp. 217 U.S. PATENT 2,980,956. METAL APPLICATORS FOR GLASS FILAMENTS. Owens-Corning Fiberglas Corp. 218 IT. S. PATENT 2,951,771. METHOD FOP.'" CONTINUOUSLY FABRICATINCOIT IMPERVIOUS METAL COATED FIBROUS GLASS SHEET. 219 BORON FILAMENTS. Materials in Design Engineering 1961, 54, 7, p.7. Boron Filaments for high strength, lightweight structural composites are under development. Tensile strength of 500,000 psi and a mod ulus of 55 million psi have been reported for 4-mil dia. filaments, and significant strength is reported retained at temperatures as high as 1800F. Initial applications may be in filament-wound re inforced epoxy structures. Filaments over 700 ft. long have been produced, a continuous process is under development. Source: Texaco Experiment Inc. Richmond 2, Van. Developed under Air Force sponsorship. 220 B.P. 889,583. MANUFACTURE OF FIBRE METAL COMPACTS. Armour Research Foundation. ASARCO ALV 0007285 aSBBstos bulletin 54 221 NON-METALLIC FIBROUS REINFORCED METAL COMPOSITES. Materials Research Corp. U.S. Dept, of Commerce. AD-265 943* September 1961. The literature on fibres and fibre reinforced composites was re viewed and evaluated. It was concluded that in principle, nonmetallic fibre reinforced metals can have the largest strength/ weight and modulus/weight ratios of all known materials, exceeding the values of those presently available by many factors, particul arly at elevated temperatures. PART 10. MISCELLANEOUS. 222 BELGIAN P.606,544. TREATMENT OF iSBESTOS FI3RES. Flammer Seifenwerke A.-G. Asbestos fibres, or their products containing organic substances which cannot be removed by washing with water, are treated with an aqueous solution of an alkali metal silicate or phosphate, pref. sodium ortho - or pyrophosphate, or sodium hexnmetaphosphate or a sodium salt of a phosphoric polyacid, at an elevated temperature, e.g. at the boiling temp, of the solution. The treatment does not impair the tensile strength of the fibres. 223 RESEARCH & DEVELOPMENT OF HIGH TEMPERATURE-STABLE INORGANIC RESINS & ELASTOMERS. J. Feltzin. U.S. Dept, of Commerce AD-267 203. Three methods for extraction of metal ions~from the matrix of as bestos and mica were investigated. These were treatment with the chelating agent 8-hydroxyquindine, leaching with concentrated HC1 and leaching with 10$ aqueous NaOH. Some success was achieved with asbestos treatments. Attempts to increase the molecular we ight of the polymer derived from the reaction of an organohalosilane and Na silicates were only partially successful. 224 ON THE ION HYDROXONIA IN AMPHIBOLES. I.V. Ginsburg and G.V. Yukhnevich. Geokhimiya, 1962, No.1. 30-36 In order to elucide the character of water contained in amphiboles infrared spectra of seven amphiboles were examined. It is conclud ed that in amphiboles there exists three types oxygen-hydrogen gro^p, viz. hygroscopic water, OH groups and 0Hn groups, possibly H^O . ASARCO ALV 0007286 55 ASBESTOS BULLETIN 225 BELGIAN P.606,354. TREATMENT OP CRUDE AS3EST0S. K.A. Oesterheld (Germ.) Crude asbestos for the production of asbestos cement, asbestos fabrics, asbestos cardboard, asbestos-containing compositions for floor coverings, etc., is prepared by making a suspension of the crude fibrous material agglomerated to bundles in a liquid and passing the suspension between working surfaces where the fibres are subjected to rubbing and flexing. A material which increases rubbing e.g. sand, a quartz powder etc., may be added to the mixt ure. 226. U.S.P. 3,002,863. SMOKING T03ACC0 MIXTURE. R.J. Shaw. A smoking mixture comprises a plurality of pieces of tobacco and a plurality of absorbing elements consisting of heat resisting fibre c-.g. asbestos coated with activated carbon. Such tobacco mixture is'designed to remove irritating substances from the smoke. 227. ASBESTOS IN POLYETHYLENE BAGS. Gummi - Asbest - Kunststoffe, 1962, Iji, No.3, p. 210. Moisture-proof polyethylene bags for asbestos fibres have been in troduced by Lake Asbestos of Quebec Ltd. Experiments have shown that even under very severe conditions the. initial moisture contents of chrysotile asbestos fibres (about 1%) remained substantially unchanged. The polyethylene bags are stronger than jute or paper bag, and they can withstand even a very rough handling. PART 11. REVIEW OP JOURNALS. ASBESTOS - FEBRUARY 1962. 807, Western Savings Fund Bldg., Philadelphia 7, Pa., U.S.A. 228 ASBESTOS TEXTILE INSTITUTE p.2. Report on Association's activities. 229 THE HIDDEN SPLENDOR MINING CO., p.14. The plant will be constructed with an initial annual capacity of 15,000 tons. This may be increased to 30,000 at a later stage. The Huxley Development Co., of New York City is co-operating with Hidden Splendor in marketing the asbestos products. ^ i iI Ji ASARCO ALV 0007287 asbestos bulletin 56 230 NEW PLASTIC PACKAGE ELIMINATES ASBESTOS MOISTURE BUILD-UP. p.22. Lake Asbestos of Quebec new polyethylene package eliminates a troublesome problem in storing and shipping asbestos. ASBESTOS - MARCH 1962. 231 ASBESTOS PRODUCTION - WORLD PROSPECTS W.E. Sinclair, p.2. Asbestos production in major producing countries is reviewed. 232 75# DUST REDUCTION IN ASBESTOS SPINNING p.16. The method of the removal of airborne dust at textile plant of Garlock Inc. is described. 233 MARKET CONDITIONS p.30. ' 234 ASBESTOS C0P0FJ.TI0N LTD. p. 38. Net earnings of Asbestos Corporation Ltd., for 1961 were $4,085,684 compared with $3,259,653 of the previous year AC-25 INTERNATIONAL ASBESTOS-CEMENT REVIEW. Editions Girsberger, Zurich, Switzerland. 235 ( 236 2 37 238 239 240 1 241 242 243 244 245 246 24.7 248 249 250 251 252 ' 253 254 Building the churches for today. J. Richard. Parish church at Salzburg, Austria, W.Holzbauer, F.Kurrent. Church in a new quarter of Grenoble....M, Potie,R.Pupat. Two Danish churches.Holger Jensen. Churches for Central Africa. Justus Dahinden. Three funeral chapels. P. Berndt, D.B. Kreuter, P.G. Lachmann. Chanel near Vezelai, France. Marc Henard. A new Swiss church, Ernst Gisel. Parish church in Essen, Ruhr. Emil Steffann. Chapel of a girls' bos.rding school in Rome. G. Sterbini. Dutch reformed church at Welkom, Orange Free State. Paris Church in Northern Switzerland. P. Chevre & P. Dumas. Mission church in Tungkang, Formosa. R.L. Neusch. Church reconstruction. Reinhard Riemerschmid. St. Emmanuel Church, Tolworth, Surrey. K. Wood. Church near Ferrara, Italy. Pierluigi Giordani. Sunday School chapel in Langres. Tolcher & Taylor. St. Mark's Church at Finchley. . Movable church in Argentine. Delfin Conway. : Air conditioning of the papal reception hall at Castelgandolf0. 1 ASARCO ALV 0007288