Document 2Jp55mqXdzD0naYrM0RJ67wj5

AMERICAN SMELTING AND REFINING COMPANY LIBRARY Research Department South Plainfield, New Jersey No, 30 BULLETIN ON ASBESTOS PUBLICATIONS ______________________________ December 1959 228. U.S. Bureau of Mines Minerals Yearbook 1958 (preprint). Asbestos, 12p, 229. Bldg. Sol. Abst. 32, 172 (June 1959) anon Waterproof fitting of asbestos-cement sliddtis Engineering (London) 187. 495 (1959) "Briefly describes and illustrates a plasties washer that provides a tight fit over the crown of asbestos-cement sheets, fixed with bolts of or 5/l6 in0 diam. including aluminium ones. A protec tive plastics cap used with the washer provides an efficient water seal." (complete abstract) 230. Chan, Abst. 22, 19226a (Oct. 25, 1959) Metallgesellschaft Akt.-Ges. (Alfred Stiefler, inventor) Electrostatic sorting of asbestos or asbestos-containing materials Ger. 965.211 (June 6, 1957 (Cl, lb, 6) "Different designs of app. for prepg. pretreated and disintegrated asbestos .or asbestos-contg. materials by means of high-voltage electrostatic fields are described. Cf. following abstr." (complete abstract) 231. Chem. Abst. 22> 19226b (Oct. 25, 1959) Metallgesellschaft Akt.-Ges. (Hans Laudert, inventor) Electrostatic sorting of asbestos Ger. 1,001.202 (Jan. 24, 1957 (Cl, lb, 6) M0n the take-up end a plate is installed, bent semicircularly around the guide roller of the conveyer band or around the rolls. Opposite to the plate, another plate is installed. Between the bands or rolls, a knocking mechanism and, at ASARCO ALV 0002504 the take-up end, a brushing mechanism are arranged. Cf. following abstr." (complete abstract) 232. Chsm. Abst. Q, 19226c (Oct. 29, 1999) Metallgesellschaft Akt.-Ges. (Alfred Stieler and Heinz Wegner, inventors) Sorting of asbestos, especially waste material C-er. 969.391 (June 6, 1997 (Cl. lb, 6) "Short-fiber crude asbestos and suitable waste material is disintegrated to 2-3 mm. and sorted by 2-stage electrostatic treat ment of the pretreated material based on the different grain shapes present. Thus, losses during the dressing process are decreased considerably. Cf. preceding abstr." (complete abstract) 233. Cham. Abst. ]&, 19347b (Oct. 29, 1999) Kitaev, E. N, Peptization of asbestos fibers and its influence on the properties of asbestos- cement articles Stroitel. Materlalv No. 6, 32-4 (1999) "Mixing cement slurry with asbestos frees Ca(0H)2 which goes into soin. and is adsorbed on asbestos and penetrates, by capillary action, into micropores of the fibers. It ppts. there, wedging them apart, and splits the fibers into still finer ones. This increases the max. ad sorption from 8.7 mg. after 24 hrs. to 28,9 mg. after 28 days. The effect cf peptization was detd. by prepg, concretes using the same cement and asbestos pre viously peptized with distd. and tap water and with a 0,7 mg./cc, Ca(0H)2 soln. Peptization of asbestos improves all prop erties of the concrete produced. Wet grinding of asbestos is recommended." (complete abstract) 234* Chem. Abst. *&, 19347d (Oct. 29, 1999) Lapotnikov, V.I, & Serdyuk, H, V, < % Mineral wool as a partial substitute for asbestos in making roofing slate. Stroitel. Materials; > No. 5 H-12 (1999) "Replacing 15% asbestos with blast-furnace slag wool does not adversely affect slate properties." (complete abstract) ASARCO ALV 0002505 -3- 235, Ind. Heating 26, 21$0 (Oct. 1909) 7rJohna~Manvillo Corp ., 22 East 4Oth Staf New York 16, N. Y, has introduced an aluminized asbestos cloth for protecting workers In steel mills and other plants from discomfort of ra diant heat, The material comprises a3bostos cloth to which aluminum foil 0.0004 inch thick has been laminated with a heat-resistant ad hesive. This combination makes a sturdy, flexible material that is more than 90$ effec tive in reflecting radiant heat. The aluminized asbestos cloth, which retains a great degree of strength at radiant temperatures up to 1400F over long periods of time, is particu larly suitable for blankets, shields, hoods, covers and curtains. In tape form, it is highly adaptable as an outer wrap for pipe lines, resulting in low maintenance, protection against flame and radiant heat, and neat appearance.12 (this item is copied here in its entirety) 23- . Monthly Index of Russian Accessions 12, 1779 (Oct. 19591 Matvienko, A, Asbestos-slag materials made with furnace slags Stroitel. I Ark. (Construction & Architecture) 2, #4, 20-21 TApr. 1959) 237. Monthly Index of Husslan Accessions 12, l8o8 Tot. 1959T"" Trudy I GEM (Acad, >ci. USSR. Inst. Geol, Ore Deposits, Petrol,, Mineral,, Geochem0 Trans.) #31 (1959) entitled "Asbestos as a mineral and an ore." Il8p. Table of contents translated: Petrov, V.P,, Andreev, IUeK. - Mineralogy of asbestos and the U,S,S.R, amphibole-asbestos in the general classification, pc5 Eremeev, V.P,,, and others. - Genesis and distribution of chrysotile-asbestos deposits as a form of contact effect exerted by grani toids on ultrabasic rocks, p*19o Merenkov, B.IA., Toistikhina, K,I,, Aleksandrov, A.L. - Importance of electron microscopy for the study of the ge/hesis of chrysotileasbestos and serpophite, p3o. Merenkov, B.IA. - Fibrous vein magnetite from the Bazhenovo -chrysotile-asbestos deposit. p.4&. ASARCO ALV 0002506 Marenkov, BIA,, Tolstikhina, K.I., Shumikhina, I0V. - Dehydration of chrysotile-asbestca and serpophite. p.54 Eremeev, V.P. - Petrography and genesis of the Aktovrakskoye chrysolite-asbestos deposit,, po680 Andreev,IU0K,, Godovikov, V.N. - Occurrences of alkali hornblendes in lower Permian marls of the Dzhezkazgan deposit, p0112,, 238e Asbestos #5 (November 1959) Contents: J-M International operations Canadian J-M expansion X&M dedicates new headquarters office building, R&D center Profile--K. H, Baker National Gypsum Company Market conditions Building The Ruberoid Co,, -- 73**d anniversary Automobile sales Production statistics Imports and exports News of the industry Current range of price Asbestos stock quotations Patents 239. APCA Abst. #2762 (Nov, 1959) Rickard, A.G. & Barratt, G,M0 Rheumatoid lung changes associated with asbeotosio Thorax. 1%, 185-193 (Sept. 1959) 21+0. Business Periodicals Index 2, #3, 6 (Nov. 1959) Cobleigh, I.U. Investment and a speculation in asbestos (Asbestos Corp., Ltd.; United Asbestos Corp., Ltd.) Comm. & Financial Chron. l89t 2736 (June 18, 1959) 2l(.l. Chem. Abst. 19716h (Nov. 10, 1959) Chapman, J.A. & Zussman, J. Further electron-optical observations on crystals of antigcrite Acta Crvst. 12, 550-2 (1959); cf. CA 2, 79551 1TFringe systems with appropriate spacings were observed in electron micrographs of ASARCO ALV 0002507 crystals of antigorite varieties that have cell parameters A'^`4.0 and A =19A, furthermore, contiguous regions of a single crystal of a fibrous antigorite show spacings of 191 and 16,8 A., reap. Possible relations between the variable spacings and crystals structure are discussed." (complete abstract) 2b2. Chem. Abst. 3, 197161 (Nov. 10, 1959) Kunr.e, Gunther Defect order of antigorite Z. Krist. Ill, 190-212 (1959) (in German) I7The complicated wave structure of antigorite has but few degrees of freedom for the realization of defective arrangements. The x-ray diagrams show that only diffuse rows with sharp re flections are present in the reciprocal space. The intensity distribution can be satisfactorily explained by faulty packing of the undulating antigorite sheets. There are no signs of other constructional defects. The analysis of the structural disorder simplifies the decision as to whether or not the SigOc; la yers are in terrupted. Since the presence of such interrupted layers would produce far greater effects on the x-ray photographs than are actually observed, the 2nd possibility seems to hold for the develop ment of the "double-half-waves" in the antigorite structure. This is &own by a discussion of some models." (complete abstract) 2^3. Chem. Abst. 19717b (Nov. 10, 1959) de Castro, A. Hoyos & Delgado, M. X-ray studies of the thermal transforma tion phases in antigorites Trabajos reunion intern, reactividad solidos 3. Madrid i9^T~2T~437-41 (Pub. 19551 "No amorphous phase exists in the product of calcination of the antigorite asbestos from San Juan, Sierra Nevado (Granada). The formation of forsterite begins at 575 with a 12-hr. treatment. Enstatite begins to form at 620 for 12 hrs. A 5-hr. treatment at 1350 gives a mlxt. of forsterite and enstatite. The formation of forsterite from antigorite asbestos is ASARCO ALV 0002508 -6- abrupt, but enstatite is formed more slowly and through a series of gradual heatings or perhaps by a continued heating at a detd. temp,, The following reaction is proposed: Si205(0H)j,Mg3 - Si0j|Mg2 + Si(Wig + 2H20o" (complete abstract) 244. Chem. Abst. 3, 197181 (Nov. 10, 1959) Bates, T,F. & Comer, J.J. Further observations on the morphology of chrysotile and halloysite Clays, Clay Minerals. Proc. Natl. Conf. Clays. Clay Minerals, 6th7~Berkeley 1957. 237-48"' THb. 19595 "Electron micrographs are reproduced for natural and synthetic chrysotiles and halloysites and for replicas from their fracture surfaces. Complexes of tubas of varied diams., laths, and amorphous tube fillings and skins are found ade quate to reconcile habits and ds. cited among the 30 or more references." (complete abstract) 245. Chem. Abst. 3, 20632i (Nov, 10, 1959) General Electric Co, (Lawrence F, Spooner, inventor) Aluminum phosphate bonded asbestos insulating material Ger. 962. ^>26 (Apr. 18, 1957 (Cl. 80b, 90l)See ILS. 2, 702.068 (CA 4% 10552h). 246. Chem. Eng. News V7, #45, 19 (Nov. 9, 1959) "California may soon have a new 2000 ton-perday (or processed) asbestos plant. Jefferson Lake Sulphur has exercised its option to acquire from American Asbestos a major chrysotile as bestos deposit in California (C&EN, Feb, 23 page 19). Jefferson plans to install mining equipment and build a plant that will supply about one third of California's current asbestos needs, California industry--second largest asbestos consumer in the U.S.--now imports virtually all its asbestos from Canada and South Africa. So far, Jefferson has proven 15 million tons of commercial ore, with indi cations of still more. Estimated date of plant start-up: sometime after January 19610" (this item is copied here in its entirety) ASARCO ALV 0002509 - 7- 224.7. Eng. Mining J. 160, #11, 166 (Nov. 1959) "Encouraging results are continuing to be obtained in diamond drilling on the asbestos prospect of Murray Mining Corp. in the Ungava area. It is estimated, however, that at least another season of drilling and perhaps two, will be required to evaluate the property. Drilling has been restricted to one zone so far but asbestos mineralization has been located on surface at spots along a length of over 30 miles. Drilling in two sections, 200 ft. apart, has suggested an average ore width of 270 ft. to an average depth of 225 ft. Average grade possible is #15 per ton, excluding shorts. More drilling will be required to estimate tonnage and grade." (this item is copied here in its entirety) 248. Mining World 21, #12, 7 (Nov. 1959) ""Asbestos is in demand in California.,, for a variety of building products. This has led to a reappraisal of local depos its. Jefferson Lake Sulphur is sampling diamond drill cores in its pilot plant mill near Copperopolis to determine fiber size and concentration. Union Carbide has acquired additional asbestos-bearing property west of Coalinga where it orig inally had some holdings," (this item is copied here in its entirety) 249. Mining World 21., #12. 67 (Nov. 1959) ""Clute Corporation of Littleton, Colorado reports that its asbestos mill near Napa, California is now in full operation. A survey of the holding in this area indi cated ore reserves of 1,795*600 tons, ac cording to Eugene Carter, geological engineer. The firm also has a mica mine and mill in New Mexico, and manufactures machinery which uses air to refine mica, asbestos, and similar materials," (this item is copied here in its entirety) 250, Mining World 21, #12, 91 (Nov. 1959) Swaziland--Promising chrysotile asbestos deposits have been exposed in pits, and by drilling in the Mbabane district, but further work is necessary for more accurate descrip tion and assessment,,," ASARCO ALV 0002510 -8- 251. Prod. Eng. ^0, 9 (Nov. 2, 1959) "New asbestos fiber, light enough in color to be competitive with glass in applications where the natural gray color of asbestos pre viously barred its use, has been developed by Canadian Johns-Manville Co8, Ltd. Aimed specifically at meeting the demand for lighter- colored, heat-resistant plastic parts, the material can be used with, or as a replace ment for, glass-fiber fillers and reinforcement. According to J~M, the treatment which gives the fiber its light color is a physical rather than a chemical one, and "does not in any way change the inherent characteristics of the chrysotile asbestos." The new fiber is now in pilot pro duction, is expected to be available commercially by the end of the year." (this item is copied here in its entirety) 252. Prod. Eng. ,20, #1+8, 36 (Nov. 23, 1959) "A reactor that uses textiles for thermal insulation will soon be in operation at the National Reactor Testing Station in Idaho. They're very special textiles, of course: silica fiber (PE--July 7, 1958, P.70) and a lightweight asbestos felt; but textiles nevertheless; and, says AEC, they show every evidence of giving good service. The reactor is the GCRE-1 (Gas Cooled Reactor Experiment), prototype for an Army "packaged" power plant. It's a 2.2-megawatt unit, nitrogen-cooled, and the felt is used for fuel-tube insulation (between the high-temperature coolant gas and the water moderator). The silica-fiber textile's exact location has not been revealed. AEC simply says it is being used "elsewhere in the reactor". Tests showed both materials stand cyclic soaking, drying, exposure to 1300 P, and irradiation." (this item is copied here in its entirety) lk 12/1/59 H. McBride K ASARCO ALV 0002511