Document 91KQ04Jq7MrRG6zjDJq1xp0ZL

FILE NAME Colonial Sugar Refinery CSR DATE 1960 DOC CSR120 DOCUMENT DESCRIPTION Industry Report - Dust Sampling and Dust Counting in the Asbestos Industry with Cover Letters & Docs J. PLAINTIFF'S vee ee . 7 re alee ee THE CHAMBER OF MINES OF W.A : KALGOORDIE W.A General Manager, Australian Blue Asbestos Ltd. KITTEROOM GORGE . 16th Marob 1960 Dear Sir During January we were asked by Dr.MoNulty of the Health Laboratory Kalgoorlie if we could obtain for him the recognised level of permissible dust whether particle concentration or fibre concentration in Canadian wines He also askie f d we would enquire if it was possible to obtain an instrument to measure concentratiomof asbestos fibres We have now received replies to our enquiries and thinking you might also be interested in the information contained I am enclosing for your records two copies of the followingt dust partiole 1 Letter from ^fintarisMining issociation re measurements in gold and uranium mines re -- asbestos 2 Letter from Quebec Asbestos Mining Association re dust measurements A'dditional data prepared by the Dust Control Engineer of the Quebec Asbestos Mining isen Midget C'opy of pamphlett illustrating measuring asbestos dust Dust Impinger used in Yours faithfully Sg^G. H. Jemings DUST aah GAB IMPINGES IMPINGES oad = Soe ave accurately legmefi inal ul q tub acurately stoppers legmefi police police police apparatus fotplager- nigulur fotplager- Kirk vield retains fayetteKirk reproducible reproducible by vield reproducible memeranget seriau cht and Schrank simile of tthhe BBuruentrBeurennttMiMMiinnenesess ey red a seriaeui ritowith Alfiger Impinger 4 lensku lensku with atvaiannsoilitta regnat'Impinges regnat'Impinges regnat'Impinges | uartim mutating os of 14 theinipnpeengegrer inpenger mutating te earn regislator minor varia in the rateunfluctunting mouthnew - : par It takes picatka rate of matoh f and rate pryai^'wy wy standard SS minute promthepromthe ipiping thugh a collected w { yin siltab"flt sskerlobbaektitnugbe schere Implages peni siltab"fltthe ; tubes to minimize the black of ativa sun.sales which argune wben black 9 sometitum k^rations dated k^rations Bectric yarns , ac dated comp^'emed Budget hy in k^rations confined confined an air and lackof cor tentacles to the ang if the Budget sime it can be carried and inspi^,per newThis makes it otpoerated alizont wer new apparatin possible conduct dust easily and quickly and with the same d previously previously provided only by large jus- So matalality the matalality Plenkten Counting 16-425 CELL samples collected with the undneroktin This Sumplute while being counend under This cell has glass plate with with glam walls it The base of the cell proper in ; ie a 9253, Alger impinger with dint low name impinger is supplied mine dust Kemperat stoppers LamberTUBES Each . _ 196.00 These a 10 plate collecting With 2.72 the cellis 1 mm Celf is supplied with finden which permit <e three finden , aere, that supplied This bincleacrCleoamrmgultaisnsg Cell ee oe PEE: 2 ite wo ry ? 320 Bay Street , Toronte 1 ; oon , eee snos ae , . Ontario Za reply to your letter of Summary 27th wi to concentration use the following general alossification for concentration | of duit partial~ s It should be noted here that when we apeaksf-.. tur particles we are referring to samples taken by kot anti that thespots are treated prior to coming = oe JB Sorcccsereore . Goodo. Jair seeeseragon . se - e : - Ve oe oreeerscencen Por: .. - . . x dia oe eceammentrybed heavily wee sempling ventil + Serreatay dm tha ange of 300 particles pe ove ) | eee rs CUKKEKO MIERNO Anbestes Anbestes , CUKEKO Anbestes MidgetAttaIcmhpeidngerpamphletfrom CrumbeMisher Sncientifc azpesmessiHeycoenvceerntractonieostnrabionrtve^s,rking regulaartlzyoepkares . the a Q.A.MA Oswe ere oe oars wv. 9, fe. soncentration . oe Canadian Impinger HidgeetngineeIrmpinger durt used all Canadian : pure recognizes a 5 : sCe Cust atzoepkares hnoy.A * . eS . Aiton 2. far poAe 8 3 p 5 eos : fh ars - a Raeok e ea e rie . * }- lion - DIET SAMPLING AND BOUT COUETTE COP ts ) PET SUPPLIKE AFTARATUS - os Durt sumpling sumpling in carried out with fidget In ix Aavaratus This apparatus consists of a one with a four cylinder redial pump wing the Crank CREA as o curge tamrs Tack strete ~ a frou pirtoe-puskhen-air the Grunk case; main taining-@.veoum: L^ting Ammen strc matycecire 7m cone tan: mowers on: ne,, ispingeerr the riesk Annestly @e whichit is comected hya orthese iny arank speed above about 50 R.P.H gives a constant 4 gceuge on: top of the ease indientes the vacuum in inches water She -cerrest vao is 12 incheosf water The Impinger at a rate of 0,1 cu ft per niuar flast k 25 e mm in diamae nd t 12e 0 mr m, in length The flask has a of capacity 3000 fhe samplinigs nomally five 5 minutes in length for concentrations which are expected te be w to 10 millions partielpaesr cubic fooo f at ir or lean for vETY high: excentrations As the collecting modium aleshel bins Seen usedbecame most inorgani^dust are lese-celuble in - alechel there ne trouble from beateria or confi thei AR comting and the impinger is more easily cleaned with alechal Aleohel has also been found more desirable for smtpling where the ~~ air is euntenineted with oil aist as in rook drilling an the il is soluble and does not n glomeratethe dust or othervise ninfase the 2 COAU T COU a Techniqua Whoa the flasks containin the durt samples are krouget down to the office they are throughly wished on the etion betwe tha ctespetra are removed o the wish tha tha tha the onttil^'s wees intake sooner SsaLenienascabdel aiintay oil mene Cf ooniensere and mirrors to afford a compact design- - leceu f tt he i maro eenn at the microscope se that the mi enn epevate. . the microscope directly rather than through ranate contruis The tun arog 1nup s used not the Le ight sn earos quaan est salli qut anty ity of mercury vapor a cylindrieni tugatan alectrode about 3 mm in diameter a shape tungsten electrode about 4 in diameter`and diameter`and centered about 2 ma. in frent the sther- ~ wd : : C ata ~ C watts to continus sporation This aro lamp is te designed buzz bate- tepe The microprojector can be used with szy standari fosi stand type microscope If the microscope is used with the microprejecter it is equipped with a 16 mm apochromatic objective and a 30 componenting syapiese to obtain a magnification of 1000 El- - Hieronens _ Dast counting oam be done wader the microspepe alone Ta that case the -microscope should have a magnification of about 100 ~ diameterswirg a 107 objective and a 10 eyepiece TnKyepieceKyepiece there should be Whipple Dine which is a glass 46 ~ marked off a squaro subdivided into 100 email squres one of which ia again divided inte 2 smaller squares The draw tube should be " adjusted ae that this large square includes e area 1 om. x 1 mm. at She peipt of foom en the stage a stage micrometer is used te get wen: - - ee . tee Leow alt 2 In the Asbestos Industry we try to keep the total Gert. geneentration below 10 millions particles per cubic fost af air wish. ote eo. lam fikre owt mtoreng, Tent prt million sites: { @ s 10 dn PG Ye PEE EE ara ey oe ee yee, oh saeraee: Sonpista aa exiPt ee aekns " Id nS Eas Fate " oh : ' Sa; ks GRRLAeat Sik ESL esas Nsae $5 RAE, wy es cmet gt 4g MOET ns rf SanseSee Spier aa ae mat aoey yeare tt: NOZ: ras De ey er er o 4 a ? Poe a eT meh a.