Document NNpw3r6j113QX3Vd4NZ5ZDx3b

FILE NAME: Concrete (CONC) DATE: 1939 May DOC#: CONC005 DOCUMENT DESCRIPTION: Journal Article - Procedures in Dust Sampling Charter Member CEMENT MILL Associated Business Papers C o n c r e t e , with which has been com bined Cement Age, New York, and Concrete Engineering, Cleveland, is devoted to the Proper Use of Concrete and the Manufacture of Cement. I Volume 47 May, 1939 Number 5 Published Monthly by Concr4e0t0e WPuesbtlMishadinisgonCoSrtrpeoert ation Chicago, Illinois Telephone CENtral 8822 Norman M. Stineman, Editor J. C. Witt, Consulting Editor A. C. Bambercer, Assistant Editor LouLis. BMroooelklemr,anC,irJcr.u,laBtuiosnineMssanMagaenrager Harold 0. Hayes. Promotion Manager Representatives E. NMeawcdYonoarkldCBitaycon 17 WLeostng4aoctrhe--3R*5o2o6m0 909 ParkeDre&troTitarbell 419 Curtis BMidsa.d.is2o8n4215W40. Grand Blvd. RoSoamn F1r0a0n9c. i1s5c5o:MDoonntgHomarewryaySt. Exbrook 6029 Los A31n8geWlose:stDNoninHtharSwtraeyet&Co. Tucker 9706 The Cement Mill Edition of Concrete exTclhuesivCeelmy efontr tMhoil*leEindtietiroenstoedf Cinonthceremteaniusfeadctiuterde of iPtsortplaagneds ceamreendtevaontdedretloateddispcurosdsiuocntss. of plant cdieesnicgyn,, cmheamnaicgaelmreenste,arocpheraantdionc,onptrroold, uqcutiaornry eofpfi eraTtihoen,CpermogenretssMainlld Endeiwtisonofatlhsoe icnodnutsatirnys. all the mEdaitteiroinal apnudblissohepdroivnidtehse nceowrrsesopfontdhiengusReesgualoadr misedricshcaunssdeisdining othfethMe imllaEtedriitailosn.whose manufacture offTichiaelsRanegdumlairll Seexcetciuotnivefusrvnaisluhaebslempiollinotspeorfactionng tacTthweitshubthsecriupsteiorsn opf rtihcee misat$e4r.i0a0ls atheyyeapr roindutchee. UOnneiteddolSlatarteasddaintdioniatsl fpoorssepsossiotangse, ainnd alMl eoxtihceor. countries. Current copies, 50 cents each. Charter Member CONTENTS Many Slurry-Filter Installations Soon Return the Investment.... 158 IoU Plant in Thirteenth Year of Salety............................................ 159 Qualities Required in Oil-Well Cement............................................ 160 Procedures in Dust Sampling............................................................. 161 Consumption and Generation ol Power at Cement Plants......... 162 Relation Between Composition and Heat of Solution................... 164 Determination of Grindabitity of Coal...... ..........................- .......... 166 Editorial Discussion ........................................................................-- 167 Oil-Well Cement Buying More Power The Kiln Operator Constitution of Cement Clinker......................................................- 168 What Quantity of Dust Is Harmful? . _............................................... 169 To Protect Suppliers of Materials on Public Works Projects...... 170 Mill E quipm ent ...... ....................................................................................... 171 Men and Mills...................... ..................- ..............................- .......... 172 Advertisers' Index, Page 32 CONCRETE is indexed in INDUSTRIAL ARTS INDEX, which may be consulted in any Technical or Public Library. Audit Bureau of Circulations CONCRETE -- Cement MU1 Section -- Mar. 1909 Copyright. 1939, by Concrete Publishing Corp. Page 157 CEMENT MILL! Procedures in Dust Sam plin g REnegcionmeemrinengdCaotmiomnsitteoef of Air Hygiene Group DEFINITE instructions for taking and analyzing dust samples are given in a report by the committee on preven tHivyegieenneginFeeoruinndgataiopnp,oinatnedd bhyeadtheed Abiyr Prof. Philip Drinker, of Harvard Uni versity. The full report has been issued bRyoutthinee SFaomunpdlaintigonforunCdoenrtrothleofhAeatmdionsg pheric Impurities. Dust Analysis of Itnhethseamcapslee otafkaelnl dfruosmts tthhee easirtimcaantiobne munaddeerbtyhecomunictirnogscroepper,esoerntthaetivseamfrpalcetiocanns bmeethaondasly, zoerdthebymaatpepriraolpcrainatebe cvhveemighiceadl. The large impinger and the electric pre cipitator are equally well adapted to either procedure. The midget impinger collects, in reasonable sampling time, a relatively small amount of dust, enough for counting. Dusts, like silica, that are troublesome to determine chemically, are gmeannegraanlleysec,ouanntedd, cwadhmileiutmho, searleikedleetaedr, mined chemicallv. couCnotnincge,rnitnhge lbiguhltl-eftiienld savys.s dtahrakt-fiefoldr routine control work the relative advan twagheast soafmtphelisneg twinostrmumethenodt si--s nuosedm--ataterer unimportant. moSnoomxiedgea,sehsyadnrdogveanposrus,lfnidoeta, balyndcarmboern cury, in minute amounts, give strong crahpemidiceasltirmeaactitoionnss; wanhdichstmillakbeesttpeor,sscioblne tthineugoruesatrebcuolrkdsofogf apseosllauntidonv.apHoroswfervoemr, otertgraanchiclosroildvee,ntasn,dsuccahrbasonbednizseunlef,idcea,rbcoann natotslboewcarautgehs,t seuffcihcieanstly* untoles1s lsiatemrppleedr minute. Some of them, such as benzene, can be absorbed directly in special sol vents or adsorbants, like charcoal or silica gel. or can be converted into an other compound which can then be esti mated by an appropriate method. Routine Checks and Recording If control equipment has been in cstaallllyedf,orsacmhepclkes-usphso. uTldhibseistatkheen bpeesrt iwodaiy "tiBonefowreit-handth-aeftderu"stineaxhcaerunsatnsthmutanoufff.acsthuoriwnignpqlannot.r--mOalnctohnedlietifotniss aabs atqhgeiynqemxisatcehdinbeeifnoroepetrhae exhaust system was installed.--On tshyestermighitn tohpeersaatmione activity is shown with the exhaust Courtesy V . W. Sly V an ufacturm f Co.. Cleveland, Ohto tiongtealls withsehthoeurldth. eIefqcuoipnmceennttraitsiofnusncotibovni toiumselytoarteakheigthh,e istaims pulesuaanlldy a waste ol it. Today, many plants operatteo cersutsimhiantge units and other dust producers at night, atondtatkoesatadgvgaenrtaegmepolofyrmedeuncteodvepro2wderhocuartse.' During the night shift, dust inspections cthaen bbeeammafdroemraapnidolyrd, inusairnygflnaosthhilnigghtbutot detect dust teaks. Such crude tests do not take the place othfereroguutlianressaammpplilnesg sthecohunldic.beHtoawkenoftdeen psoemndespelnactierse,lytheuypoanrelotackaelncodnadiliyti;onins.otIhn ers, several times a year is enough. It is well to play safe and to take them too oqfutiecnklyratbheecromtheanustoeod stoeldsoumch. sTahmepmlinegn aOnbdviopuayslyn,othaetsteonotnioernthtoe stahme pplreorcheadsutrhee. man's interest in his results, the better will be the outcome. Wherever Men Work woSrka.mpIltesisshaoumldisbtaekteakteon iwghneorreevepilamceens where one believes that there is no dust or gas. The samples are about the only pioof that the employer can bring forth that he has taken proper precautions to pmreerveensttaatedmiseenatset,hsautchheasorsilaincoysoinse. Telhsee thought the atmosphere sufficiently clean is nOoctceansiooungahl. photographs of various plant operations are often of greater prac ctiocuanl tussoerfuolfnegsass tohranvaaproer rceocnocrednstroaftiodnusst. As an exhibit on the company's bulletin hoards, photographs are effective warn ings to the men to clean up. CONCRETE -- Cement Mill Section -- May. 1939 KKentuckytoLBarbooorkaltyonry Moved ENTUCKY Testing Laboratory, of Lexington, Kentucky, has been ab sorbed by Foster D. Snell, Inc. of 305 Washington Street. Brooklyn, N. Y. The Kentucky laboratory has specialized in analysis of coal, water, building mate rials and similar lines. All equipment has been moved to Brooklyn, and the former personnel has become part of the staff of Foster D. Snell, Inc. This broad ens the analytical division of the Snell tlhaebosreartvoircye apnodssaitbtlheetosamfoermtimerecilmiepnrtosveosf Tichee aKt etnhteucnkeywTelsotciantgioLnabwoarsatostrayr.teSderovn April 1. Page 161 CEMENT MILL W hat Quantity of Dust Is Harmful? W HAT quantities of various indus trial dusts, fumes, gases, vapors or tsepeoonnsosrislihciopsiosf, othfewihnitcehrnDarti.oSnaaylecrsomismonite out damnigsetsr moraypothsesibaitlmitoyspohferperocdounctaining wiothf the vice-chairmen. That emphasized the necessity of cporenvfeernetnincge harmful effects on workers? This problem is being attacked by the dsiulisct.osis through suppression of silica committee on standard allowable concen All standards prepared by the A.S.A. trations of toxic dusts and gases ap committee will first state the scope and pointed by the American Standards Asso purpose of the standard; second, identify ciation, 29 West 39th Street, Mew York. the substance chemically, physically, and The committee is headed by Dr. R. S. Sayers, chief, division of industrial dpeesrmcriispstiibvleelyr;anthgierdo, fstcaotencthenetrmataixoinmsumof hygiene, . S. Public Health Service. The committee will make recommenda tphleacteosx;icfosuurbths,tasntcaete ihnowtheanadir wohferweoartk twioonrskintgo oAn.Sm.Aet.hocdosmomf ipttreeevsenwtihnigchocacrue mfifothsp, hdeersiccribsaemthpelesmesthhaoldl obremceotlhleocdtsedto; mpaittitoeensalondistehaesedse,sipganrtiacnudlarolpvertahteiocnomof sbiextehm, ipnlcolyuedde iann ainnatelyrpzrinetgataioirn saanmdpgleesn; ehxehadaus,steysessy, taenmds,reasnpdiratoonrypororgteacntsioonf ionf earpapllysiunmgmthaeryreoqfuiirnefmoremntast.ion to help in dustrial workers. Its findings will be Dr. R. R. Jones of the U. S. Public helpful in carrying out the recommenda Health Service is acting as technical sec tsiiolincsosoisf, thheeldintlearsnt aStieopntaelmcboenrfeurnednecre tohne trieotnasrymfaovr htehiasdcdoremsmseidttetoe.hiCmo. mmunica Exposition of Chemical Industries Scheduled for December iusnsuabeltehetoceortbiftiaciantethbey hdiastaownnemceesasnasry, thtoe ifnutrenriesshtehdimextphoertreerquwirileldbdeatraeqouneswtehdolteo stiaolne wpriilclessu.bTjehcet tahbesesnhcipemoefntht iisn iqnufeosrtmioan tvoaltohreemad. ditional duty of 10 per cent ad IBraMzile'setCNemateionntaPllNanetesdNs ow MPORTS of cement into Brazil have steadily declined during the 10-year period 1929-1938, until they now repre sent less than 9 per cent of the 1929 trade, says a report to the U. S. Bureau of For eAigmneraicnadn DCoomnessutliacteCGomenmeerarcleatfroRmio thdee Janeiro. tionInhathseinscarmeaesepderaiboodutd6o0mpesetriccepntr.odTuhce epxripnlcainpaatilolyninfothr ethfaisctstthataet wofithaftfhaeirasssliisets aCnacneadoifanfoIrelaigrngecampiatnaul fa(cAtumrienrigcanplaanntds have been erected in Brazil; and these, parreotencotwed sausptphleyyinagrethbey daenmiamnpdosrtodf utthye, principal Brazilian markets or trade atrraenassp. orWtaetrieonit fnroomt fmoranthuefahcitguhrincgosct eonf ters to remote markets in the countrv it i.-, probable that cement imports, with the exception of white cement, would cease epnrotidreulcye.d WinhBitreazciel.ment is not no being HE Seventeenth Exposition of Chem addressed to the Seventeenth Exposition Tical Industries will be held this year of Chemical Industries. Grand Central Increase iPnrGoderumcianngyCapacity at Grand Central Palace, New York CityP, alace, New York, N. Y. during the weekof December 1 to 9. Since N October, 1938, definite steps were I its inception in 1915. the Chemical Expo sition has become the traditional means Regulations for Exemption big teaxkpeannsiinonGienrmthaenyprtoodubcriinngg caabpoauctitya |: abnydwehnigcihnetehres cionndvuesntreyt'so tmakaenuifnavcetnutroerrys from Additional Duty r g en tin e Decree No. 295 of Nov. of the nation's cement industry, says a report to the U. S. Bureau of Mines from A f of material and equipment advances. At the last Exposition, in 1937, held at 28, 1938, provides that in order to be exempt from the additional duty of 10 C. M. Garrity, . S. vice-consul at Frankfort-on-Main. Grand Central Palace, visitors came from 1,358 cities and towns in 45 states of the p1e9r38cebnutdagdetvlaalwor,eimm,paosrtepdrocveimdeedntbdyocthue The expectation is that the output in 1939 will exceed the production in 1938 United States, and fiom 130 cities and towns in 47 foreign countries. The total mented as from Jan. I, 1939, must be covered by a special certificate issued by by some 6,000,000 metric tons, or about 30 per cent. Up to the middle of 1938 the registered attendance was 46.290, an alltime record. the Argentine consul in the country of origin showing the wholesole price or demand forcement was met without diffi culty; but later, when enormous orders The first three floors of Grand Central Palace have been reserved for the com prices for cement for internal consump tion in the local markets, says a report to for supplies for fortification of the west frontier were received, the demands made pinrgeveixopuossietxiohnibiintorDsehceamveberre.-eNngeaagrleyd 2t0h0e tthiceCUo.mSm. eBrcuere. au of Foreign and Domes bfiyedp. riIvtatweacsonnescuemssearrsycotoulidmnpootrtbeItsaalitaisn ethnitridreoffirtshte atnhdirdsefclooonrd. fMloaonrys, oafntdheoneex- cerTtihfeicaAtergferneteinoefccohnasruglse. wTilhl isisssupeectihael cement for the construction of the KDF (People's Car Works1 at Fallersleben. It hibitors who were in the first Exposition certificate is in addition to the regular is estimated thet the producing capacity in 1915 have already engaged space for documentation required on shipments to of the German cement industry was 18,- 1939. Information about space may be Argentina. When the Argentine consul is 000,000 metric tons in 1938. CONCRETE -- Cement Mill Section -- May, 1939 Page 1G9 32 CONCRETE May, 1939 M19O39STBLAOMCAKZMINAGCHINE HAMMTEhReEFDOSOTTREIPPER Original in Design -- Outstanding in Perform ance -- Compact -- High Capacity -- Low First Cost -- Quality, Low-Cost Production. Write today for descriptive bulletin TH E J. B. FFrOedOericTkEtownF, OOhUio N DRY CO. HCEAMERNST HCOALOWRS CIrhornomOiuxmide,GrUeelntraOmxairdinee, RBeldue iraonnd Ooxtihdeer, Ycoellolorsw. THE HARSHAW CHEMICAL CO. Cleveland, Ohio and Principal C ities & E. L. COEstNabliWshedE1L89L4 CO. ENGINEERS - CHEMISTS - INSPECTORS Tests of CemCeenmt,eCnto, nCchreetme,icSaalnadn,dStPehely,sCiceaml LenatboBrlaotcokr,ieCsement Brick Complete CThecehmniiccaall ASnuapleyrsveissioofn Aolfl CCoemntmraelrcMiailxePdroCduocntcsrete Plants 2024 ARCH STREET PHILADELPHIA, PA. I Advertisers' Index 1 AAnncchhoorr CDoivn.croefteCoMncshoyli.dCatoed....C...o..n..c..r..e..t.e....M...ein. C..o..r.p.................... 24- BBeissmsearrcMk aHnuoftaeclt.u..r..i.n..g....C...o....... - BBllyacstko&neDMecfgk.erCMof.g.....C...o .................. B o o k s ........................ . . . .2440 . * . 20I Inside Back Cover CChaalbinarBPealtinCto&....V...a..r..n..i.s..h....C...o...... . . ... CC.laHss.i&fiedE.LMinfegr.s C..o.......I.n..c.............. CCoolmomreerercteialInSdhuesatrriinegs.&.....S..t..a..m...p..i.n...g....Co. . CCoonnwsoellildaCteod.. CEonLc..r.ete. Machiner?. .Corp . DDeosWweiltlt &HoKteolsv.e..r . . .... Foote Foundry. Co .1 B.. 20 . 2 0 31 . 2 2 10 3224 . 3222 HHaanrbseonr PCloy.w, oLo..d...C...o...r.p...... HHoarllsohsatwoneCCheom. i.cal .Co... Th.e 3118 . 2 332 Ideal Div. of Consolidated Concrete Maclmien Corp .. JJaoehgnesronM-Macahricnhe CCoomrpp.,amThe . 24 . . 12?3 KKoirekh&rinBgluCm oM..f.g.....C..o...... 2233 LLi&vinMg-MStofgn.eCCoom..p..a..m.. . . . . 3131 Lone Star Cement Corp.. 11 MMaalrlqTueototel CCoem....e..n..t...M....f..g......C...o........ 22 MMielpehs aMm,fgG. eCo.o.S........&.....C...o..r..p.................... ... . . . 212 Multiplex Concrete Mch\ Co. 17 NNaeptitounnael MCfhge.mCicoa..l...&....M....f..g....C...o. . 2209 NNeeww MHoolnlaarncdh MMaacchhiinnee C&oS.t.a..m..-p.i.n...g....C..o .. . .2211 Noble, Thos. 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