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FILE NAME: Concrete (CONC) DATE: 1954 July DOC#: CONC023 DOCUMENT DESCRIPTION: Journal Article - More Efficient Mining and Modern Plant - Double Asbestos Production ( JULY, 1954 ROCK PRODUCTS THE INDUSTRY'S RECOGNIZED AUTHORITY VOL. 57, No. .7 Bror Nordberg Editor What's Happening 33 Editorial--Research to Develop Profits from Waste Products 37 Rocky's Notes--The Teamsters' Union and Its Head Man 39 Labor Relations Trends 41 People in the News 43 Industry News 47 Hints and Helps 50 New Machinery 52 Increase Crushed Stone Capacity for DiversrMiofciaekudlperCIoondnducucrstestrtcieeosmP, rpIonadneu.i,ecsgt,rsbowuinldtsoahneotohneer ocfrutshheedlasrtgoenset 56 wplaatnetr abtlaPsrtionsgpeacnt,d Pelxac.aPvailtei-odnriavreer sdormilelionfgtahnedunuunsduearl practices Walter B. lenhart PortlandmECuieersompineeantntheferxmopmaenriuOefnaiclcetSuphroeailnoetfsPtoortsluabnsdtaenetmiaelnft.ueulsiencgonooil 59 shale and limestone Fred Kloiber ProducindWguecHaervigerohf-CGhorinagsdhtr-ecuac"ltcSioiuungmCarol".i,mASetlsodtonenne,e Iofowra,thise asulagragre pbreoet 60 industry, agricultural limestone and road materials Ray C. Grddings Recover Specification Sand and Gravel from aoBfeCcckllaaeyryerCyeomuDonevtapyloSasitatnMdaarlnbdorGo,raSv. eCl . Cp'ola.,nstoblvyesthperuosbeleomf 62 sci uhber screen, blade mills and liquid cyclones W aiter B. Lenhart More thatMinc.aJDl.okGuirlbnolveewLLitimihmeeanCCao.ip,naStectgeitpryahlelnys lCocitayt,edVag.,aisnsptarolldsuvceerr, 66 hhoatvignagsecsenttherrouagnhd gsiadse pbruordnuecresr, with recirBcrourlaNtoiordnbeorgf More Efficient Mining and Modern Plant Double Asbestos Production Morion 1. Briggs 74 Two Kilns in Series Produce Perlite Hubert c. Persons 81 Dedicate Million Dollar Stone Plant, New York Trap Rock Corp., Haverstraw, N. Y. 84 CONCRETE PRODUCTS- Block PlaUnntitwedithCePmuesnht-BPurtotdounctCs oCnot.r.oWlsichita, Kan?., installs 113 automatic controls foi mixing and batching concrete Tip Brown Spinning and Rolling in the Manufacture of Concrete Pipe 116 Hubert C Persons Besser Celebrates Golden Anniversary 119 Radio Offers Many Advantages to the R ea dy2-2M. ix A edp r Co dounccerretev i eIwnd- utshtery ' e a d v - n m e d cnm-rete in- 123 dlistl V Jo s A. Nicholson Nathon C. Rockwocd Sditorial Consultant WSt. oSh. eTroBrg. Lrseonnh,arMt, AansasogciniagteEdEidtoitror ME..MK.. ASmmiothc,heAr,sAsissstaisntat nEtdEitdoirtor N. G. Lange, Assistant Editor Contributing Editors Victor J. Aibe F. O. Anderegg M. W. loving Jomes A. Barr, Jr. Home Office P. D. Allen, General Manager M C. ary M. A. Ha Whale ncock, nP, rSoudbuscctrioipntiMonanDaigr.er C. P. Teats, Field Representative District Offices EMasatenrangeAr;reaC--hRaesg. inDaaldly, WA,ssiDstaavnist,, 5M2u2rrFaiyfthHiAllve2.-,78N8e8w. York 36, Tel. CHMeaanntirnnala1A-4rBe3al6d--2gR..,. EC,leKveelianned, M1a5n, agTeerl,. Magidewr,est30A9reWo--.EJ.acHk.soHnicBklevyd,., MCahni caaldgoC.6,WTheilt.eH, raerprriseosnen7ta-7ti8v9e0.. Don Wacagegesorte,rn63,09ATreWela.--esHLt,aJrarCcisk.osnoTnh7aB-o7in8v,9d0.,.MCahni PMaciilflisc BAlrdega.--, DSuanncaFnranScciostcto &4, TCeol.., G29a7r8fieWldil1sh-7i9re50.BlIvnd.L, oTselA. nDguenleksir5k, 8-4151. MLonadnoang, inEgngloDnidr--ecHtoarr,olMd aFc.leaCnh-aHrulens-, tSetrr,anLdt,dL.,onWdoenll,inWgt.oCn. 2H. ouse, 126 ROCK P RO D U CTS is published month!? by MAC* L E A N -H U N T E R Publishing Corporation, 308 Wwt Jackson Blvd., Chicago S, Illinois; Horae T. Hunter, President; P . D. Allen, Vlca-P m ldeel; Ralph K. Davis, Secretary. Copyright, 1954, 8? Maclean-Hunter Publishing Corporation. Entered u second-class matter, Jan. 3D, 1936, at the Chlca#*, 111., post office under the act oi Mar. 3, 1878Additional entry at Long Prairie, Minn. ROCK PRO D UCTS is indexed regularly by Engi neering Index, Ine. and the Industrial Arts lndX- SU B SCR IPTIO N INFORMATION Subscription Price. United States and Possession*. Canada one year, 52.00; two years, $3 00; tbrtf years, 54,00. Pan American, one year, $4.00; tw* years, 57.00; three years, 510.00. A ll other for!** one year, S6.00; two years, 511.00; three ye*ri 515.00. Twenty-five cents for single copies. Cn*' dian subscriptions and remittance may be sent I Canadian funds to ROCK PRO DUCTS, P. 0. Be* 100, Terminal " A ," Toronto, Canada. To Subscribers-- Date on wrapper Indie-stas U*u* +nh which your subscnptien expires. . , In orltin# ' p have address rhanged. give old as well a* new Modern mill ot asbestos plan* in Lowell, Vt. Also may be seen dried ore storage building and conveyors between structures More Efficient Mining and Modern Plant Double ASBESTOS Production Ruberoid Co., Vermont Asbestos Division, with quarry near Lowell, Vt., constructs modern mill to process 10,000 tons of asbestos annually ONfEKJiE>KNTJ'HaEsbMesOtSoTs MmOinDiEnRgNpl4aNnDtsEEin- oie eaxnidsteanbcoeu,t p5r0o,d0u0c0intogns12o5f t.aps.bhe. sotofsraw fUiboe.irc,asivxead<ayisn ai uwuemekl-,thise-tchieocRkuboepreoiaid- VCoe.inqiounat.n tThme eLleocwtieolln, onforathneewentsriaxl- sntuomiybemr ilolf ainidistothetoinmtriondinugctioruncdobftdas htiaovne agnide aftlhexibinilciityeased plant produc MoLuonctaatien,1 otnhe 33pdlaUn-tft.-ihs igohpeBraetlevdidebrye tohfethYeeicmomonptanAysbaensdtops roMdiunceess d!nivi ispieorn scheunrtt-loifbeithe ascbhersytsooslitein, ntohneopiUnnniitnegd. aSctraetes,s. eIqtsuivhaollednint gstoexmteonide ovthear n285000 tCimureisenttheopseirzaetioonfs BaorsetonconCfionmedmonto. t1hUe50nfotit,h1J5sl0opfte. aonfd th13eU0mfot.unietavienls at thiWs hoepnen-tlfiacceKmubineeioiidn i1boo. d t o j' o j uk r n o tvheer VAemrmeioiinat, thAesebjeusatonsy wCaos rypioerladtiinogn onloyf iaobnosuto5f bats.bpe.hs.toosf ara n} e aoir.e Uanpdeialbt.iIoJIiJiOs tcavienj e i on n t hthee tsoouuut h osf l op E e d t of -n, t,,h,/e<]mwoeurne relatively simple. Within thiee ea j s By M A R IO N L. BRIGGS othfeoineo,rtwh itshlolpoengoefr thasebemsotousntfaiibne.r, on opeTdh.e annedwa so5u0rUche-fto.f aoerreialwacsabdleewvealy tchoensrtoruccktetdo otvheer tohreigminoaul ntmaiiln). toWthakene the second mine site gave evidence of edxepteonssitisv,e tahned csoumitpaabnlye acslobseesdtosdoowrne tthhee aoeldriaml intrea, mdwisacyo,ntainnudedm thUei4u9secoonf mstirlulctwedithits inpdreussetrnyt-imnnoodveamtmgsi-xe-qsutoiprymeInnt caonndstfreuacttuiornes, .the mill is of struc taureraal, csoteneclr,etheasmaaint>f5lo,0o0i0,-sfqounfdt.atfiloonosr caenmd efnototisnidgisn, gasmiancodrrruogoaftiendg. asJbtesctoosn- tains surplus capacity to allow for bypassing any machine temporarily ti'eastiJ by the eompanv to ipi the iiiitallatiun ,,/ new , tiJUlpliien and the discovert, curate prospecting, of a better 74 Sample of the "silk" asbestos fiU ROCK PRODUCTS [u1v, 1p54 : S* - oneuit-eosfsaoijiyt-,i hi no T'hai.'i.vbyihpaaisisgitnag, euithbmei wiaol lefisnlgopeosf ttohethme in1e05g0o-fets. olenveiln, aanpd ing- air, steam and g'as and sweep it through two cyclone collectors 10 ft. uthcet ijualit.v or the amount of the prod tporpoxilemvaetleldyowIDnU, -ifnt. boerdmehresto figoemt tthhee cinlotdhiambaegterduinstto failt3e4r,.000T-hce.f.crnlo. tOh riroen terEeolencnteicn'tuml omtorssin hlii athwe amy iltlo apteermmit- deAsirfetedr blbelnadstoinf go,re.rock too large to mDaaimnps eersffiwciietnht afuotrommaotrice ithonatnroaJs ykeeaerp. abuutcokmetateiclevsatatorrtsinga ieandusesdto. ppTihneg. nNulol huasinndgle hiasndre-doupceerdateidn scizoempbryeswseodrkearisr t2h4e0 fdielgte.rFt.ebmypleertattinugrethferofmanesxecxehedaiunsgt bmueialdnisngofishohteaateird finedcobladekw efarothmer thbye Ib.iBts, 5a7ndjaJcokyhaTmMm4e0rsdrwifittehrsd. eItnacvhvaobikle- tsotriaptmbeoastpehresrepreabvoevnet tthheisgapsoeionut,s manad gdriyeeinsgthwe et.emsopetrhaatut i eeviesnhealtd /b.eeitowedeen iinngthoen hjaacrkdharmocmk,e-eiasi.biSdeecobmitslaaivre suhsoetds tloewriatlhseincotnhdeenfislatetironfiopmoindt.ropping be 60 and 70 deg. F. All processing from the third-stage aabieoutde2t0o0nattoed800byarelinme adceu rsriemnut,ltaanned is Tchaerrieddrieodn boerelt cleoanvvinegy-orsthteo dary5e3r2s- cinrutshheinmgillo. fFrthoem aasbweestt,osstocokrepilies, dwointhe ousTlhye. recent purchase of two 3-< u fwt.hicShymreodnuscesshoirtt-thoea1d-inconmeincursusshiezer., arecclaapimaceidty byofa 7254,0-0in0. ttounnsn,elthbeelot i ceuni-s cyud.. Myda.rioshnovpeolw, etrhesholvaerglsesatndinonNe e7w- 3T-hfet.y Sayrme otnhsenshcoarrtr-iheedadoncotnoeacrpuasihreorsf vroecykoi,up2504-5ft.ftt.entotertsh,ethmaitll,cawrrhieesrethiet Etionng.laTndhe, hbaigvebuspckeeedt eldiftpslainnt opnreodbuitce fsoizre.fuInrthderry rwedeautchtieorn, itto is32p-ions.simblienutos ldeijs-cflhoawrgreostairnytodtrwyeors7.- x 60-ft. paial- 7to-cnus.. Aydll. aorfe rpoocvk/,eiwedeibgyhienlgecatrbiociutty. 10 dhiarveectthteo othree bcyopnaesscrtuhsehderrsy.ers and go pilTinhge oifnnwoevtaotiroenbyoftheouRtduoboerronsltoCcko. 15B-toenar-cdaupmacpit2y7, FloDadEuficolimd ttrhuecksp,ileosf eruFsrhoemi, tthhee 3i-f-ti.n. shmoirnt-uhseadprodcouncet h25aUs mtheen aadtvawnotrakgethoef ykeeaerpilnogunadb,ouast ohfaublslasttoed thoere,prainmdarcya ncyruistheorns skheopitt mstoovraesgealbounigldiang24w-iinth. caonItv),e(y;0o0r-tionntocaa odpuerirnatgioJnowo-ftemthpeerpaltuanret wcianntecr ownteiantuhe er. Full-time employment at the plant fctl.osleevtoel,thtehew otrrkucinkgs fadcisec. hAartgtehein1t0o5Ua40-ton steel hopper that feeds fiom cpoancittryo.lleOd n bay paaralSlyelntrboenlt cvoibnrvaetyionrg, feeder, the material moves to the a d see meresainns saurlriovuelnidhoinogd ttoowmnsa,nwyhVo ecrommoentto apan15f-efte.de:<r i6n0t-oina. 4K8e-nxne6d0y--iVn.anT raSyahunn processing mill, where it discharges onto a pair of identical flows. Note tin i Lo. hwiogihkesitn acvoemrapgaenyhobuurslsyes waangde gient tthhee plervieml airsy ajaw36-crxush4e2r-.in,Atp rtihme a3ry150ja-fwt-. worthy is the remote control govern ing the flow of oi e to the feed convey area. crusher. The minus 6-in. product fiom the or by means of a Merrick Weightometcr with a rheostat regulator and w it High Faces -- Large Blasts primary crusher at the 1050-ft. level recording meter. pul ecoNneowmictoal, thise tmheiniunsge itnhdisusctroym, paanndy mft.ov.eSsymaloonnsg caobneelt ccruosnhveery,oratnod a f5ioJmj- Removing the Fiber si a v> )l makes of high faces and large blasts. Blast holes are drilled with Bueyrus- tlheveel,priitmisarcyarrcireudsht.eor a a-tj11t-hfet. S11y5m0o- nfts. Some of the "silk of the mineral kingdom'' is aspirated by aii suction ' ai Erie 2ilT churn drills that average 2.40 f p.h. The holes are 6 3 ~in, open ceorsn,e tchreushcreurs. hFedromoreboitsh tcaokneen crbuysha afinodmresalochpeindg bteafbolrees tohseciolrlaetienngtesrlsowthlye im i i ings, and a ie spaced 10 to 128 ft. along the fare. Shots average about 80 holes conveyor to the wet stockpile neai the plant. fbiebsetroiszinfigbemr aicshibnreosk.enMluoioeseoffiothme tahse atonnds poifurdonctke eaabcho.utTh5e0,u00n0usutoall1y00g,o0o0d0 Collect Wet Dust From Dryers ov\rheeraes itthegoreosckthraonudghhathrde ffiiblleeirizearrse, li a breakage and a yield of close to 5 tons per lb. of explosive are partly attrib tryA, nbeinlineovvedatitoon hien tfhirestmeinmipnlgoyiendduast hlouorsleendedagfiabienrstin btiheeakmerachpilnateess.is Trhee 1 austbabesletostoorteh.e Psneammasi oorfd fsibaefretyin futhsee tohfewRetubdeursutidfropmlantth,e isdrytheers.coInlletchtieonn mtoovsue-deebiiys awirtahpiJd4 adnovde nkns-nini. eoiiTpenoifnagus, idsynuasemditwe.ith 75 and 60 peicent gelatin ctiiornculcahramaibr-ejrast, ktehtetd,froeile-fimreodisctoumrebuisn fpriopmingwinhtiochcoiltlecitsoras.spirated through a hAertethceur1re8n00t -oftp.elreavtieol nosf atrhee inijuparinrgy-, ttohe6ajsibeiecsetonst otoi eleisss ituhtando0w.5n pferrocment5. After leaving the fibeiizmg ma chines. the asbestos ore goes over ai mesis,ftrhoemoi4e00botdoy 8is00abfot.utw3id0e0.0 Iftts. lsooncg- tFwroomn,tOhe00d-icscf.hrna.igfeanesndssinokf tthhee dei syceai ps. sTihieeenpsinswi3th[-inN. - oiaendmo'sv-eisn.onopteonintagisi-. out of opeiation. This bypassing, when nere ssai y , jit no 'a .iv i h a n g e s eitbei wiaoiicl-isnlogpeosf ttohethme in1e05g0o-fets. olenveiln, aanpd ing air, steam and g'as and sweep it through two cyclone collectors 10 ft. tuhcet quality ot' the amount of the prod tporpoxilmevaetleldyowlOnH, -fitn. boerndcehr estofigment tthhee icnlotdhiambaegterdiunstto failt3e4r,.000T-hce.f.cmlo. tOh riroen terEcolencnteinct'edmototor.-su hhi athwe amy iltlo apteerminit deAsirfetedr blbelnadstoinf go,re.rock too large to mHaaimnps eersffiwciietnht afuotrommaotrice ithcoanntroalsykeeaerp. abuutcokmetateiclevsatatortrisnga' ieandusesdto. ppTihneg. mNilol huasinndgle hiasndre-doupceerdateidn scizoempbryeswseodrkearisr t2h4e0 fdielgte.rFt.ebmypleertatitnugrethferofmanesxecxehedaiunsgt bmueialdnisngofishohteaateidr finedcobladckw efarothmer thbye Ib.iBts, 5a7ndjaJcokyhaTmMm-e4r9sdrwifittehrsd. eItnacvhvaobilke- tsotriaptmbeoasptehresrepreabvoevnet tthheisgapsoeionut,s manad gdriyeeinsgthoei ete. msopeit'haatut ieeviesnhealtd /b.eettowedeen iinngthoen hjaacrkdhraomckm, eciasi.biSdeecobmitslaaiyre suhsoetds tloewriatlhseincotnhdeenfislatetironfiopmoindt.ropping be 60 and 7U deg. F. All processing from the third-stage aabieoutde2t0o0nattoed300byarelinme adceursriemnut,ltaanned is Tcharerieddrieodn boerlet cleoanvvienygorsthteo dary5e1r?s- cinrutshheinmgillo. fFrthoem aasbweesttosstocokrepilies, dwointhe ousTlhye. recent purchase of two 3-cu fwt.hicShymreodnuscesshoirtt-thoea1d-inconmeincursusshiezer,. arecclaapimaceidty byofa 7254,0-0in0. ttounnsn,elthbeelot i ceonis cyud.. Myda.rioshnovpeolw, etrhesholvaerglsesatndinonNe e7w- 3T-hfet.y Sayrme otnhsensbcoarrtr-iheedadoncotnoeacrpuasihreorsf vroecykoi,up2504-5ft.ftt.entotertsh,ethmaitll,cawrrhieesrethiet tEionng.laTnhde, hbaigvebuspckeeedt eldiftpslainnt opnreodbuitce fsoizre.fuInrthderry rwedeautchtieorn, itto is32p-oins.simblienutos ldeijs-cflhoawrgreostairnytodtrwyeors7.- x 60-ft. paial- 7to-cnus.. Aydil. aorfe rpoocwk,eiwedeibgyhienlgecatrbiociutty. JO dhiarveectthteo othree bcyopnaesscrtuhsehderrsy.ers and go pilTinhge oifnnwoevtaotiroenbyoftheouKtduoboerroisdtoCcko. 15R-toenar-cdaupmacpit2y7, FloDadEuliculrida ttrhuecksp,ileosf eruFsrhoemi, tthhee 3l-f-ti.n. shmoirnt-uhseadprodcouncet h25aUs mtheen aadtvawnotrakgethoef ykeeaerpitnogunadb, oaust ohfaublslasttoedthoere,prainmdarcya ncyruistheorns skbeopitt mstoovraesgealbounigldiang24w-iinth. caonItv),e(y;0o0r-toinntocaa odpuerirnatgiolnowo-ftemthpeerpatluanret wcianntecr ownteiantuhe fctl.osleevtoel,thtehew otrrkucinkgs fadcisec. hAartgtehein1t0o50a- cpoancittryo.lleOd n bay paaralSlyelntrboenlt cvoibnrvaetyionrg, a d mere. aFnuslla-tilmiveeliehmoopdloytomemnatnayt Vtheermploanntt 4a0-1t5o-nft.ste;<el60h-oinp.peKr enthnaedt yf-eVeadns Sfiaoumn fpereodceers,sintghe mmilla, tewrihaelre miotvedsiscthoargthees see tin i ewrrsnkin isnurcroomunpdainnyg btouwssness, wanhdo cgoemt ethtoe pprainmfaereydejrawintcoruash4e8r-. xA6t0-tihne. T11ra5y0-lofti. ownotrothay pisaitrheofreimdeontteiccaol nftlroowl sg. oNveortne Lo. harigeah.est average hourly wage in the clervueslheirs. a 36- :< 42-in. p rim ary jaw The minus 6-in. product fiom the oinr g btyhemfleoawnsofoof iea toMtehrreicfkeedWceoignvhetoy- metcr with a rheostat regulator and w it High Faces -- Large Blasts primary crusher at the 1050-ft. level recording meter. pul ecoNneowmictoal, thise tmheiniunsge itnhdisusctroym, paanndy fmt.ov.eSsymaloonnsg caonbeeltccruosnhveery,oratnod a f5ioJmj- Removing the Fiber sjlf W)] makes of high faces and large blasts. Blast holes are drilled with Bueyrus- tlheveel,priitmisarcyarrcireudsht.eor a a4t11t-hfet. S11y5m0o-nfts. Some of the "silk of the mineral kingdom'' is aspirated by aii suction ' ai Erie 26T churn drills that average 2.40 f p.h. The holes are tj'z-in. open ceorsn,e tchreushcreurs. hFedromoreboitsh tcaokneen crbuysha fiom sloping tables oscillating slowly and reached before the ore enters the ini i i tihngesf,aarne.d Sahioetsspaavceerdag1e0 atobo1u8t f8t.0 ahloolnegs pcolannvte.yor to the wet. stockpile neai the fbiebsetroiszinfigbemr aischibnreosk.enMlootoeseoffiothme tahse atonnds poifurdonctke eaabcho.utTh5e0,u00n0usutoall1y00g,o0o0d0 Collect Wet Dust From Dryers owrheeraes itthegoreosckthraonudghhathrde ffiibbeeirizearrse, li a pbereralkba.goef aenxdplaosyiiveeldaoref cplaorstelyto a5tttroinbs tryA, nbeinlineovvedatitoon bien tfhirestmeinmipnlgoyiendduast hlouorsleendedagfiabienrstin btiheeakmerachpilnateess.is Trhee 1 austbaebsletostoorteh.e Psieiammasioordf fsibaefer tyin futhsee tohfeweRtubdeursotidfropmlantth,e isdrytheers.coInlletchtieonn mtoosvcerdeebnys awirtahpiLd adnodwnbsc-iimn.etoipt enoifngaisr, idsynuasemditew.ith 75 and 60 peicent gelatin ctiiornculcahramaibr-ejrast, kethteed,froeile-fimreodisetuumrebnisn- fpriopmingwinhtiothcoiltlecitsoras.spirated through ivhAetrethceur1re8n00t -oftp.elreavtieol nosf atrhee intjupariorgy-, the asbestos oi e is i ut uovvn fro m 5 to 6 pel rent to less than 0.5 percent. chiAneftse. r tilleeavaisnbgesttohse ofirbeeiigzoiieisc omvear ai mesis,ftrhoemui4e00botdoy 8is00abfot.utw3id0e0.0 Iftts. lsounrg- tFwronm17t,hnet)Ud-icsef.brna.igien,eusndssinokf tthhee dei syceai ps, sTihieeepnhs iswiAth-in'-.i-oiaendmo'vs-eisn.onopteonitnaghs-.