Document rBk1RmKmGnKVmReDqq693dN50

ASBESTOS TEXTI1 I1ISTITUTE ABSTRACTS Vol* 1, No. 1, 1952 t 'i I. > * lf J iTAIR HYGIENE: * rtjfl-. Electrical Method for Investigating'the Nature and Behavior of -*$ Small, Air Borne, Charged Particles. J. H. Daniel and F, S.J-- Brackett. J. Ap. Phys. 22:542-54. Liy '51. | PLAINTIFF'S EXHIBIT 'iv I 2. Engineering Phases of Plant Health Control. V/. A. Cook. Chen. C: Eng. II. 29:1517-18. Apr. 16 '51. . .Vf. .4 Health and Air Pollution. A Study on a Limited Budget. H. C:Heirnann. ' A. Mi A.`Archives. Ina. IlyGienc Occup. Lied. 3:399-407. Ap. '51. Investigation of Snail, Air Borne, Charced Particles by an Electrical Method. J. K. Daniel. F. S. Brackett. A.M.A. Archives. Ind. Hygiene & Occup. Med. 3:505-19. May '51. 5. Plant Designed for Employees'-Welfare; ControllinG asbestos dust at Asten-Hill Mfc. Co. Arch. Rec. 110:121-3 N '51. C!-`7 C.f;. Check List of Air Pollution Control Ordinances. Iron Age 169:454. Ja 3 51. Sonic Agglomeration--A New Solution. Gordon Kiddoo, Chen. Eng. 58:154-156, May 1951. "7?; *f V: 7; :V In a sonic agglomeration aerosols--dusts, smokes, fumes, foes or mists--are subjected to hich-intensity sound. This sound causes the Gas-borne pollutants to vibrate, collide and adhere together in clusters of different size for removal from the gas phase in a secondary separator such as a cyclone. The effecicncy of sonic agglomeration is dependent upon 1) the frequency of the sound, 2) the size of particle, 3) the density of the particle and 4) the velocity of the eas. Ordinarily, only the first two factors are of commercial importance. The primary factor of a sonic agglomeration is to agglomerate the aerosol particles into larger particles of sufficient size to permit their removal from the Gas in a secondary collection. Little separation of the pollutants from the gas if effected in the agglomerator itself. The particle collection efficiency of a sonic agglomeration system can be increased by introducing a fine spray of water into the agglomeration chamber. Devices- for the generation of sound fall into three groups: 1) piston, 2) v.'histle and *3) siren. The piston-type sound generator includes magnetostriction devices, electro-magnetic devices and piczocloctric crystals. These aro essentially lou out-put devices and have not had large commercial application. V/histles have such lor; efficiencies that they are of no -interest. The siren-type sound generators develop large amounts of power and are being successfully used in commercial application. .'TECHNICAL: How to Apply Insulation on Gteam Turbines* Power EnG* 55:76-7. S' 51. 9. Two Uays to Insulate Fiances, Valves and fittings. R. L. Davis. Pet. EnG. 23: C 54 J1 15 '51. 10. Double Insulations for Safe Service. Safety Maint. & Prod. 101:51. Ap. *51. 11. Heat Insulation V. J. D. Blakeley. The Stean EnGineer SCXI, 247, 269-72, "A'p. *52 o)Comparative performance as`heat insulators evaluated for 1) S5 macnesia, 2) KieselGuhr, white asbestos (chrysotile), 4) Fav/n asbestos (amosite), 5) Blue asbestos (crocidolite), 6) Glass wool and Glass sillc, 7) Rock wool and slac v;ool, 3) Expanded materials such as foamed concretes and slags, insulat- inc refractory brick, expanded polymers, expanded viruiculite and related micaceous materials. Thermal conductivity curves for rigid slabs and pipe sections reveal that rigid rock wool slabs'IQ lbs per cubic foot exhibit best performance above 500F. 12. Heat Insulation IV. J. D. Blakeley. The Steam EnGineer XXI, 246, 223-225. LinitinG hot face temperatures for various insulating materials are listed as follows: Insulating Material Limiting hot face temp. Laminated Cellulose paper Cork Asbestos 4> 20 cotton Asbestos t 5 cotton Glass fibre with starch bond 85^ Magnesia Asbestos-unbonded Asbestos-bonded with silicate of soda Glass fibre-unbonded Rock wool Kieselguhr-raw KieselGuhr-calcined 150 160 300 450 500 575 800 900 950 1200-1400 1G00 1800 GENERAL 15. llacnitude of Canadian Asbestos Industry. P. LI. Lialouf. .Can. Llin. J. 72:84-6 5 >51.