Document dn4Z29x1OEmNL2BQGEo0J3zk5

FILE NAME: CERAMICS (CER) DATE: 1938 July DOC#: CER017 DOCUMENT DESCRIPTION: Trade Journal Article Excerpt - Looking at Possible Dust Hazards with Reference to Dr. Gardener at Saranac Labs ' - "b :r;8 0 c: b 3 9 U 33 Charter Member Aiiociated Business Paper bCionnedc rCeteem,ewntithAwgeh,icNh ehwasYboeerkn, caonmd Concrete Engineering, Cleveland, is devoted to the Proper Use of Concrete and the Manufacture of Cement. Volume 46^ CEMENT MILL S E C T I 0 N July. 1938 Number 7 PuUUktd Monthly ky Concr4e0t0e WP uesbtlMishadinisgonCoSrtrpeoertation Chicago. Illinois Telephone CENlral 8822 N orman M. Stinim an, Editor J. C W itt, Consulting Editor A. C. Bambercer, A m ttant Editor e LouiLs. BMroocckllmrra. nC.irJcr.u.laBtuiosninMesasnMagaenrager Harold 0. Hay, Promotion Manager Representatives E. NMeawcdYonoarkldCBirayoMi . IT WLeostniAa3cirhe--3R-5o2o6m0 909 ParkeDr eit.rToiatrbetl 419 Curtis BMidasd.is2o8n121SW4.0Grand Bird. RoSosma F10ra0n9.ci1sSc5o:MDoonntgoHmarewryaySt. Exbrook 6029 Los A31n8geWlees:stDNoninHtharSwtraeyetIt Co. Tucker 9706 The Cement Mill Edition of Concrete escTlhuesieCeelymetonrt tMhoilsleEindtietiroensteodf Cinotnhoe tmrratniusfaedctiuterde ofIPtsortplaagnedsceamreendteavnodtedreltaoteddispcruosdsuiocnts. of plant cdieesnigcyn., cmheamnaicgaelmreenste,arocpheraantdionc,onptrroold, uqcutiaonny eoSp- eraTthioen.CpermogernetsaMainlld Endesitrisoonf nthlaeoinoodnuutttyna. all the mEdaitteiorinal apnudblissohepdroivnidtehe nceowrrsesipfontdhiengsaRcesguanladr mis edricshcaunssdeisdining othfethMe OmattWeriauls,whose manufacture oCTchiaelaRsaegdumlairll SeexcetciuotnivefsorvaalsuhaebalempOoinotspoerfactionng tacTthwe itshubthsceriupsteiorsn opfritheso imt s8teUnIs0Isathyeeyarprloadutchee. OUonciteddolSlatarteasddsintidoniatls (poorssepsosaioungsa, tiasd alMl eoxtihceor. countries. Current espies. SO cents each. Chirter Member CONTENTS Dirtci nriflf el RaUry r '1 ________ __ ___ 191 Klab-AlumU* Caraaol U Iip u ________ 199 Inhalation ol Dust u 4 Coofrol of Dual Kaaardo--By W. C. J&am 200 How Japanaaa Coaaot Manuiactaran DUanify Th*U Acdvltlai --By Euichl Moral____________________ !____________ 202 loblfb to Coaplaia RafcablBtadoo of Two tutor* Plant*____ 204 Coabln* Comoal and Ouarry Secteu ( Salary Couudl___ - 204 Mathods ol Pratacdoa Ayalaal SUcoal*____________________ 201 Editorial_____________________________________________ 207 Juno Campaigns Do Pay MThoarna tDhoivaAraednidaodnPt rCoudnurcotioDnroppod Ho Blda on radar*] Csraool lor OUo. Watt Virginia aad Haw Je n ./ - ----- - ____ ________ 201 find Xlfk Dagroa of Accuracy lo Wat*or Torbldlaatar______209 A tfiad M i Corata! Prodocdoo C ry a fa f Bayood Nation* Nooda______________________________________210 MID C a tla o e il__________________________________-- - 211 Mas aod MU*________________________________________ 212 Copyright. 1938. by Canotto Publishing Carp. CinOaNnCyRTEeTcEhniiscailnodrotPoudbliinc LINibDrUarSyT.RIAL ARTS INDEX which m ar ha conaultod Audit Buretu of Circulations ... CONCRETE -- Cnmnnt Mill Snction -- July. 1938 P*tju 197 Ui oi Mining and Metallurgical Engineers, in Februar), 1937. He said: edg'ien, ittheisprneostenpt osstsaitbeleoftoouersktanbolwishl dpuersmtyisisnibdluestlriimesitsorofpdroucsteisnseesss, faosr tahlel sinaneaxttieornnabl omthodinifythinegdcuostndciotniotennstisansdo einxgtrecmoned. itiIonnsmairneinfga,irhlyowcoevnestra, nwt oarnkd iitndwuosutrlyd bife ethxetrevmareiloyusvamluianbinlegtocotmhe epsatnaibelsisthh,atwfiathcethaesihleiclpa hoafztahred pwroopueldr gstoavnedranrmdsenptarlactiacuatbhloeriatineds, aptpelnictaatbivlee fsooratnhdeiritowisnamlionnegs. sSteopmeinhtahvee driognhet direction-" This recommendation might well be extended to other industries. More Knowledge Is Needed The National Silicosis Conference ten tatively established a maximum of five D uit am pline at l i u wills-- ,,w " * the effect of mixed or non-siliceous dusts problem of exposure resolves itself into million particles per cubic foot as a safe quarts concentration in the case of highlv hate been based on the findings of these studies. two parts. First, what proportion of the workers' lime is actuallv spent in the stoilimceooduisficdautsitosn. aTshims osrteanddaatrad airsesudbejveeclt One of the outstanding conclusions a student of these researches in the cement dustv atmosphere? It is evident that a hazardous dust will not affect a man oped by different industries. The Na tional Silicosis Conference report also industry will reach is that concentrations of free silica appreciably higher than the unless he is actuallv exposed to it and will not have as great an effect on a man says. "It is recommended that clinical and engineering studies be carried out as maximum specified by the Silicosis Con ference are safe if the silica constitutes who is exposed to it one hour a dav as on a man continuously etpo*ed. rapidly as possible to establish the neces sary scientific data upon which we may base practical and effective regulators a moderate proportion of the total dust. Apparentlv a mixture of silica with other minerals, if the other minerals are pre Jie[cTuhttt trheemeaffiencitngotpdaurrtaotifotnhuotpeaxppeoriumreil. /olloiied br a discuiiion ot preientne standards." The report then states that dominant. tends to inhibit the effect of meajurei --Editor.] Plan New Cement Plant iyit kfonrowelsetdabgleisohfintghreseafefacctoonrcsenistranteicoensssaroyf sthibelesitloicarecinomthmeenludn,gw. itIhtoiust nroetseyrvetatpioons, atmospheric dust: the dilution of silica with other dusts as for Turkey u. s. aint the1.freTehesirlieclaatiasnedntuhme boethr earndpasritziecleosf a protective measure. It is far better to remove the dust from the atmosphere. ccording to a report to the A th nt dsuifsfpeernendtedpaarttsbroefaththineg inledvueslstriianl tahte mosphere. Nevertheless, it is significant that in the Portland cement industry, where a high concentration of raw material dust con Bureau of Foreign and Doroejiic Commerce from the office of the Ameri* iilnl ? um2e. aTchtueapllryopsopretniot ninotfhtehevawriooruksmdeuns'st taining up to lU per cent of free silica is sometimes found, the X-ravs and phys can Commercial Attache at Istanbul, the Turkish Government has awarded a con tract to a European equipment manufac .5 . concentrations. 3. The effects of exposure to envir ical examinations reveal no pathological lung condition attributable to dust. turer for cement mill machinery to be installed in a new plant at iivas. ru ine toinomnaelnat.ndasmeredviceaallehdistDoyrietsheof oocldcuepma ployees. by physical examination and Th* Practical Limit Although no agreement has been Installation of the machinery is ex pected to start in October of this year, onis- obyf ththeeir lruonegnst.genological appearance reached as to the maximum safe concen tration of free silica in the presence of ainndJuthlye,pl1a9n3t9s.hwouitlhd eantdeariliyntoproopdeuracttiioonn hvaett ob- facTtohrrso,uagnhy ainkdnuostwryledcgane doifsctohveeser wthhraete, hhoarumselkeessepidnugstsli,maitgsreiesmpernact tiacsalltyo ugnoaond capacity of 300 Ions, or 90.000 tons per myeaatre.riaInl invietwhe osuf rtrhoeunadbiunngdadnisctericotf, irtawis if any. hazard it has and what preventi-e imous. Industries with a dusty process, di measures are needed. For the past two vears. under th, direction of Dr. Leroy even though dusts are harmless, should endeavor to reach a concentration in the htoopdeodubthleat itthsepfraocdtuocrytiowni.ll Tsohoenqbueararbieles will be connected with the plant by an - urr itr cel- Lfo.r CthaerdnSeturdoyf othf eTSubarearncuaclosLisa,bothraetocrye ment industry has been making a care neighborhood of 100 million particles per cubic foot of air in the breathing zone of the workers, in the interests of apeartieadl tlhinaet wofhe3n.10th0ismfeatcetrosr.s Ietnitserasntiinctoi oifwx n ful estimate of the health of its workers, according to the plan just outlined. Manv comfort and increased efficiency. The third factor in the development of production the Eastern \ ilayets and Cen tral Anatolia will be supplied with ce ment at considerablv lower prices -iule of the statements in this paper regarding silieoa.s is duration of exposure. The I C O N C R E T E -- Cament MID Section - Jl-'y- 1938 Pag* 201 oi Mining and Metallurgical Engineers, in February, 1937. He said: ed*g'eI,n ittheisprneostenpt osstsaitbeleoftoouersktanbolwishl dpuersmtyisisnibdluestlriimesitsorofpdroucsteisnseesss, faosr tahlel ivnareixatteiornnabl omthodinifythinegdcuosnt dciotniotennstiasnsdo einxgtrecmoned. itiIonnsmairneinfga,irhlyowcoevnestra, nwt oanrkd iitndwuosutrlyd bife ethxetrevmareiloyusvamluianbinlegtocotmhe epsatnaibelsisthh,awt fiathcethaeshileiclpa hoafatahredpwroopueldr gstoavnedranrmdsenptarlactiacuatbhloeriatineds, aptpelnitcaatbivlee fsooratnhdeiritowisnamlionnegs. sSteopmeinhtahvee rdiognhet direction." This recommendation might well be extended to other industries. More Knowledge Is Needed D ull M m p liq f at b a m a tr Ulls--iaw aa4 The National Silicosis Conference ten tatively established a maximum of fixe the effect of mixed or non-siliceous dusts problem of exposure resolves ilself into million particles per cubic foot as a safe qjartr concentration in the case of highly haxe been based on the findings of these studies. two parts. First, what proportion of the workers' time is aduallv spent in the siliceous dusts. This standard is subject to modification as more data are devel One of the outstanding conclusions a student of these researches in the cement dustv atmosphere? It is evident that a hazardous dust will not affect a man oped by different industries. The Na tional Silicosis Conference report also industry will reach is that concentrations of free silica appreciably higher than the unless he is aduallv exposed to it and will not haxe as great an effect on a man says, "It is recommended that clinical and engineering studies be carried out as maximum specified by the Silicosis Con ference are safe if the silica constitutes who is exposed to it one hour a dax as on a man continuously exposed. rapidly as possible to establish the neces sbaarsye spcrieancttiifciacl daantad uepfofenctiwxehicrhegwuelatmoarxs a moderate proportion of the total dust. Apparentlx a mixture of silica with other minerals, if the other minerals are pre Jiic[Tiuhte trheemeaffiencitngotpdaurriaotifotnhiostPe^ePp*oriutlre. jolloned fcr a ditcujnon ot preientne sktnaonwdlaerddgse." ofThtherereepfoarcttotrhsenissntaetceessstahrayt dominant. tends to inhibit the effect of the silica in the lung. It is not vet pos meajurer -- Editor.] for establishing safe concentrations of Plan New Cement Plant atmospheric dust: sible to recommend, without reservation, the dilution of silica with other dusts as lor Turkey the1.freTehesirlieclaatiavnedntuhme boethr earndpasritziceleosf a protective measure. It is far better to remove the dust from the atmosphere. ccording to * report to the i . s. A sduifyfseernendtedpaarttsbroefaththineg inledvueslstriianl tahte mosphere. Nevertheless, it is significant that in the Portland cement industry, where a high concentration of raw material dust con Bureau of Foreign and Domestic Commerce from the office of the Ameri um2e. aTchtueapllryopsopretniotninotfhtehevawriooruksmdeuns'ts taining up to lU per cent of free silica is sometimes found, the X-rays and phys can Commercial Attache at Istanbul, the Turkish Government has awarded a con tract to a European equipment manufac concentrations. 3. The effecta of exposure to envir ical examinations rexea! no pathological lu"g condition attributable to dust. turer for cement mill machinery to be installed in a new plant at sivas. rnme otinomnaelnat.ndasmeredviceaallehdistboyrietsheof oocldcuepma ployees, by physical examination and Tha Practical Limit Although no agreement has been Installation of the machinery is ex pected to start in October of this year, onit obyf ththeeir lruonegnst.genological appearance reached as to the maximum safe concen tration of free silica in the presence of ainndJuthlye,pl1a9n3t9s.hwouitlhd eantdeariliyntoproopdeuracttiioonn set hat facTtohrrso,uagnhy ainkdnuoswtryledcgane doifsctohveeser wthhreaet harmless dusts, agreement as to good housekeeping limits is practically unan capacitv of 300 tons, or 90.000 tons per year. In view of the abundance of raw material in the surrounding district, it is ob- di if any. hazard it has and what preventi.e measures are needed. For the past two xears. under th,. direction of Dr. Leroy imous. Industries with a dusty process, eevnedneatvhoorutgoh redaucshts aacreonhcaernmtrlaetsiso,nsihnouthlde thoopdeodubthleat itthsepfraocdtuocrytioni.ll Tsohoenqbueararbieles -nutrv- L. Cardner of the Saranac Laboratorx for the Study of Tuberculosis, the ce neighborhood of 100 million particles per cubic foot of air in the breathing waeirlilalbelincoenonfec3te.1d00wmithetethrse. pIltanist abnytiacni pated that when this factory enters into cel- own >i* ment industry has been making a care afuclcoersdtiimngatteo othfethpelahnejaultsht oouftliitnsewd.oMrkearnsy, zone of the workers, in the interests of comfort and increased efficiency. The third factor in the development of production the Eastern Vilayets and Cen tral Anatolia will be supplied with ce oylt of the statements in this paper regarding silicons is duration of exposure. The ment at considerablx lower prices. Pag* 201 C O N C R E T E -- Camant MID Section -- Jr'y. 1338