Document 6BrnMg0v215KBDaGz5gQ6EGNg

FILE NAME Colonial Sugar Refinery CSR DATE 1960 Dec 20 DOC CSR107 DOCUMENT DESCRIPTION Letter to A.B.A. Wittenoom Manager with Govt Inspection Results & Tabulation of Dust Counts DISTRICT_INSPECTOR DISTRICT_INSPECTORDISTRICT_INSPECTOR PINES ae ~ Cue 167167 167 The Manager . SA. CL: Australian Bluo Asbestos Limited WITTENCOM 20th December 1960 amy (ene ce ra we . Dear Sir Assistant Inspector Simmons has supplied me with - figures and information obtained during his last inspection of your mina After correlating all the facts and studying the I minefopllloawsns now wish to advise you and to make requesta as The long break between shifts is having the desired effect of clearing the mine atmosphere before the commencement of afternoon shift operations in your upper seen workings It vas also found that greater use was being made of secondary healthy ventilation appliances This is assisting towards more healthy ~ conditions but many working places still require the installation and constant assistance of secondary ventilation I must request . source in all working places which are not in the direct airflow and that the use of such appliances be enforced at all times In the Lower Seam workings the long break between wes istwee std ed Your present mining system on the lower sean is to mine from a manway and chute and form Blind Stopes As these stopes extend an area is opened which cannobte adequatel ventilated at any time by a fan and ducting Further to this the ducting carmobte correctly placed until a workman enters the stope after firing and therefore the long break between shifts is wasted and the workman is exposed to fumes and dust I must request that all stopes have a through nirway and that faces away from the through air current be ventilatod at all times by secondary ventilation . It is suggested that these stopes can be ventilated by stopa drives as used in your old mining system in the upper soam workings : Indiscriminate orib time firing is having a detri- mental effect upon our efforts to make better working conditions . There should be no necessity for man to fire at crib time because of the abundance of working faces Secondary blasting in chutes is increasing and this increases the dust and fume hazard There should be no necessity for this in your shallow chutes and the practice could quite easily be eliminated by anchoring the stope grizzley bars in place so that they cannot be spread by scraper drivers Dust is still being generated in your main adit at the conveyor transfer point and at No 4 level bin Dust counts of 350 p.p.c.c. and 460 p.p.c.c. respectively were recorded at these positions I must request that action be taken to remove this dust which at present enters the main ventilating flow It 1 \ : aC ... a ce ~ J. N. PENGAD oe aa is suggested that funs exhausting from these points will be the only efficient remedy It is apparent that some bad practices are the result of inadequate supervision in your Miners School and the net men are being instructed only in the art of using a machine charging up and firing When my Inspectors visited this School the students were boring some 150 feet from the manway and through air current Although an electric fan was installed to draw air from the upper seam workings to ventilate the stopo no ducting was attached Aside from the ventilation aspect studenta were boring in faces in which butts had not been : cleaned out and broken rock not completely bogged back from the face It was therefore impossible to examine the bottom of the face These breaches of the Hines Regulation Act can not be tolerated and it is requested that decisive action be taken relying major role in mining activities . If strict supervision is not given and regular safety measures enforced haphazard methods will result This will be fol byl unso afew mine ing d and unpleasant action : At the time of my Inspectors visit the lower sean vas being opened up off the 2 3 and 4 levels The same sanways and cintes are used for both the lower and upper seas worrings The air passing along Nos up the mamaye and chutes 2 whe3nanodpe4nleivnetlos passes directly u Oe stoping Following my ventilation Inspector's survey in June 1960 all manway on N s2 and 3 levels vere bratticed off chau lltche uts es ' on Ho 2 level Since our visit in September 1960 the mining - of the lower neum has commenced resulting in the brattices being either dismantled blown out or damaged The position now is that 3,000 cumine entering No 1 level plus 21,000 cumins entering No 2 level plus 22,000 cumins entering No 3 level are going to waste except that required to supply the secondary Tans on 2 and 3 lovela which would amount to approximately 15,000 cumins Approximately 35,000 cumina at least are going direct to the exhaust fan without serving any useful purpose The exhaust fan was measured at 92,000 cumins therefor westage is greater than one third and could probably approach one half of the total air supply My Inspectors reported that only on two occasions did they find the spray working over the main mine transfer bin This spray must be operating at all fed with ore . times when the bin is being It was also reporttoemde that in many instanotshse scraper men were not correctly uning the sprays provided Please ensure that these sprays are used The only air from the total of 92,000 cumine that is available to ventilate the workings below No 4 level amounts to 31,000 cumina - this illustrates how unevenly the air is distributed throughout the mine generally The rise from 543 manway to the surface vill an breaking through alter the ventilation circuits and a more controlled system of ventilation should easily be devised The main adit is very dry and dust is raised by movement of miners in the edit If the adit floor was sprayed with water collected from the bottom of the adit this dust misance would be corrected ... : bg mew Treatment Plant Conditions in the mill were consistant with previous inspections and dust counts are still high More dust appeared to be liberated from the crushing section then on previous visits The transfer chute and tunnel contained bad conditions and a count of 900 p.p.c.c. wes recorded The 12 EF drawing air from outside ventilates the chute position Any dust liberated is carried slowly outeide by the return airflow causing the turmel in which the chute is situated to be filled with dust This can be prevented by having the fun exhausting from the end instead of blowing in This would cause pure air to flow into the tunnel and the dust laden air will be exhausted through the ducting Please have this alteration effected Will you please advise me what alterations have beer made if any to the dust collecting circuit of your mill and what action is to be taken You will have noticed that the Hill dust counts are far still conditiocondnition too high and action must be imptr o o impv roe ve this I fully realise the hardships encountered and the retardation of your underground programme occasioned by the change in your underground staff I loo lok ok impr tooiv mpre ovd ed condii n tt he i neao r fn utus re attention Will you please give all these matters your immediate : Yours faithfully SENTIOR INSPECTOR OF UIES District Lector the TABULATION OF 317741 31-1 DUST COUNTS NWO 399 . : AUSTDRATAELIABNLUE ASBESTOS.LIMMIITNEED ASBESTOS.LIMITED PLACE COUNT DAYTEMPERATUWREET REMARKS: s 16-11-60 | Colonial - so level North Drive 71 North Driva 71 " ener 548 Rise 180 83.5 82 610 Meah frfo rom 40m 00 cfm Clealn evei l Sn at. g 15 75.5 Boring Sat 15 ER from pp: so h 5 nell 538_Scraper -548 Surface 110 76.5 Rise_up_35 Rise_up_35 Rise_up_35 Soraping 67 Thro air 73.5 Bo=r Adji thrn o aig r 1000 a 2000 - L.8 L.8 , Stope eens nero550eed76 anne Rian_upRian_upRian_up ..67 Scraping Face from manway Stope -90503 8. Stops is .90 175.5 175.5 77 rims a Dead pocket pocket -. No vent vent .... rn 6F poDec ad pok ckete No vt ent 71 Boring & Scraping.Dead_packet Scraping.Dead_packet Scraping.Dead_packet Novent 200 7777 176 4076 4076 pocket vent 71 Machine from dust EF_from_u duop t ap vaielar ble 71 Tailmana.position duct_12 17-11-60 EP_from_upper_seam EP_from_uper_seam EP_from_uper_seam Noduct available . . Stope 3... 9000 Stope 170 -71 Boring machines from a ese workni ot won rkingg Fan working ducting 30 each machinerespect before ducting available . ete af a H i , ne 1 rt 14 eee arn 70 | Boring from manDewadapocy ket vent | Saraping - |Borian ir Vg el 15 min boosting level 76 | And Cat Uri me me mans " GAR uo j , f DATE 17-11-60 on MINE PLACE Colonial 4 level Stops even 6 an - -6000 stopestope 6 Yavre 628Stopaann 6 oan 628 stope . own M 4000L.8 L.8 Stope obra an400L0.8 StopSe tope TEMPERATURE COUNT DRY WIT . REMARKS re 23Q 7245 Machineidle.Taihr Vrelo 81.5 duct.Extended work proceeded EF from 700 Boring EP7000_c . 83 -73 Tailmane..position Tailmane.position Tailmane..position EF 7000 cfm 240 1.80 75.5 Prop bore12 7.7 bore bb nella 4000 L.8 Scraper Scraper 80 76 Prep scrape Thro einen nmin 41N_L.8 41N_L.8 Boraper beeen eon 400 1.8 Stopei 78 74 ...scraps air -3078 74.5 Machine file Sat. 12 EF_ upper sean iy 1, 41N_N W_L S Stope- 78 74.5 Boring fromExtended al. 0 Stope 520as 78.5 79 work proceeded EF from Thra 521 Stope & min 51m Stopemn|150 81 ~. ..73 Tailmans pou ThroVel15 eanuvG 8080 7.0 181 3081.5 3081.53081.5 3081.5 100. 370. 81 7 Saraping _ 73.5 Scraping Scraping - Thro ZF. Boring Yel 75 scr&aspcraipinngg Sat.15 Prop Dead pocket FVyouT 529&Wstopestope 539 B. Stopo 4258 E. Stope 7 . . 7 7615 70 Fucvn 70 rorerne - Boring Thro air Velmin oa + pies o fi 383749/39 j TABULATION OF DUST COUNTS BLUE TEMPERATURE DATE MINE PLACE COUNT AUSTRALIAN ASBESTOS LIMITED DAY WET 28-11-60 28-11-60 Colonial + 4 428-8 78.5 P yy _429_Scraper _429_Scraper ..40 62.5 i REMARKS . %$ air_boosted EF Goraping Thro air 18-11-60 Dust in i4t Intake AdjNao.claevalnchtuteenn}.50 Adjacent No level shute .70 Conveyor Transfer ~~ Adjacent Adjacent Point .350 Adjacent No. level chute 460 anemone cere foanenre verre ote sennrn signed fn ASSISTANT INSPECTOR DATE MINE AUSTRALIAN BLUE ASBESTOS LIMITED ' TEMPERATURE PLACE COUNT DRY WET REMARKS 4 25-1Colo1 nial Col- nial e6 tern n0 nn3.Level 5 N StLo.B. L.B.pStoepe 60- 60- 250 7.7 66.58craping 66.58craping 68.5 Baring fronm ot on available before machinmen notinterestEPefd rom leval ae Biron 9050"& ... _L.8 Stope 290 RE Boring vent 3 1 mn 9000 1,8 -Stamioeisncp imiiae raeed ..160..160 76.5 76.572 Tailmans position Scraper idle Bacon , 9000L.B 900L.B . StopeStope nnn . pocket vent air " ducting not fan imdsiaksSSanbanarscanindsninmetncmmatiiee ducting.connected still back from face before work proceeded 13 ran 9040 L.8.8tops L.8.8tops ..snnsinmrcamnind7070 |.75 .. 72... Boring 100 frompocke poct ket adequua ntilt adeqe uate ventilation 6. * 6118 KA: .140 76.5 74.5 Boring EP from 3000 Risa_up_20 179 ..71 Boring201min 100 177.5 17.5 . ..73 ... Riggingscraper break thro to by_15_EP_from 538.Thro_air flow boosted Mech.bEo F g 7000.cfm | Boring Thro Vel 20 min cnn ScrapingThro Boring installed atopped MMR TABULATION TABULATION OF DUST COUNTS COUNTS YJ Scraping Scraping air Vol min Manway, Sarap ing.Thro,.ai | 34771959-3 7 a : | il TABULATION OF DUST COUNTS Ne 399 PLACE level & E Stops TEMPERATURE COUNT DRY | WET . REMARKS 4 100 177.5 Soraping Val min NOTE All afternoon 4.30 4.30 10,00 p.m. 1 fs t Orr d 81gned SIMMONS J mF 31778 |. DATE 29-11-60 29-1-60 . ELU MINE Surface Plant Colonial . 4 # TABULATION OF DUST COUNTS PLACE COUNT DRY WET M.B REMARKS thy Transfer._ohute_from_ Transfer._ohute_from_ Transfer._ohute_from_ mL .900 | Picking station Ba 360 Secondary board .100 Screena floor : Lf 480 Entrance Kubits 360 Cyclones.switchboard Cyclones.switchboard .600 Central Switchboard 420 Screens area < T 440 North Bagging Station -470 South Bagging Station nie viene un EF 12" blowing from outside 5 employed here : regularly . SINHONA OF ASSISTANT A 939-1 TABULATION OF DUST COUNTS 199 DATE MINE PLACE NORTH WEST MINING LIABILITY Spec 4 level_No_6_Mil 23-11-60 ane nn ~ coun level_No_6_Mill U.H U.H Stope H COUNT TEMPERATURE DLY 7 REMARKS % .80 .73 Mach bog - Thro air 800 orm 460 81.5 81.5 ef nk leer] Boring Thro air 800 efn | Downcast cumins i. Exhaust- # LJ Surface ousing | Surface a measurwe ouldm be ue nren liat ble | inaccessibofisluirftacye exhaust oiroulating levels therefore fresh passing pas ing thro workinga