Document 71aV7GeB69nQMyg9E4qvx111V

FILE NAME Colonial Sugar Refinery CSR DATE 1962 July 20 DOC CSR095 DOCUMENT DESCRIPTION Govt Inspection Results - Ventilation Report - Australian Blue Asbestos Ltd has Worst Dust Counts Inspector has Seen N. PLAINTIFF'S Bayon e EXHIBIT Bayonne Bayonne 104790 Bayonne PENGAD PENGAD PENGAD ft Hadion - er MA State Kining Engineer 6 incs Deportment ae ENGLAND ENGLAND ENGLEANGLANND EDNGLAND . 20th July 1962 Ventilation Report - Juze 1962 : Herewith in triplicate Inspector Simmons report together with dust counts : Other than the usual irregulations found conditions were fairly good except at Australian Blue Asbestos Ltd. and at Ravensthorpe Copper Mines - The overall dust counts at Australian Blue sbestos are the worst I have seen There is no doubt that 11. general conditions underground have improved this being due to firm action taken by the Inspectors We still have hoteve the hozardous dust problem and this problem will remain whilst present mining methods continue I have written to the Manager of the ine requesting the abolition of underhand stoping a cory of my letter is attached but due Dust is no doubt still being produced w.derground __ the high counts found on the last inspection or not to cr to underground zining operations 19.6.62 You will notice the followin es ^...be Day Shift - Main Adit Bench 650 19.6.62 20.6.62 15.6.62 Aft.Shift * * " " - Main Adit .ch " " " Transfer belt Main Adit 650 1000+ 680 " 70.6 Ross Chain feeder H.Adit 720 18.6.62 No. 3 Ross Feeder Koin Adit 850 Transfer belt Main Adit 1000+ 19.6.62 7 level Transfer Grizzly 1000+ from the It will Mill vis be realised that dust is entering the mine the Main dit and that dust is also being produced from Ore tensfer points in the Adit this air continues through the underground workings I realise only too well that until such time wher an effective dust collecting plant is installed in the Willing section we will have this trouble but the company has under expert guidance constructed a new pilot plant for dust collection and is in the process of testing this paint I feel therefore that I must be a little patient with the Hilling Section -2- an There are however several points where dust is produced and where no effective control has been undertaken I am instructing Inspectors to stop work at any of these points until the matter is remedied --. _. Inspectors with . am without doubt losing patience this Company All our Inspectors have gone out of their way to offer assistance to this mine and I on beginning to think that this has been taken as a sign of weskness All kinds of promises have been made by the Management but very fcu ful- Inspector Ibbotson and myself both feel that we interpretation have reached the stage when we are afraid that our personal disgust` could cloud reasonable unbiassed . I have already told the manager that if he does not fulfill his obligations I personally will initiate - prosecutions against him I must await results of the present dust collecti tests but if they are not successful or if they are queeCES ful and work not put in hand to immediately r.cify sildefects I will be both morally and duty bound to close the mine .. Rovensthorpe Copper Wines is another problem but now that the Mine is to continue production firm action will be token to remedy defects . SENIOR INSPECTOR OF MINES Post R. FullyFully state Dining Enginoor Wines Deportmont BP LAARLIS, 1.12 July 1.52 _ Ventilation australian Blue lotestos Lt^" Lt^" Mine * Colonial Colonial = le 2 : 1 Accompanied by Assistant Inspector Loxton ecrried on an inspection during both day & afternoon shifts of the mining ^ billing operations A complete airflos curvey was alco curried on The opportunity une taken to compare the t^rdalloscopekindlyfoaned with by Testern Mining Corporation our konimetere ye" t the resulto have not bees collatod but once completed a cogerste report will be for- unriod . Vicually conditions throughout the sire generally - havo deteriorated considerably since my last visit The record dust counts cre high particularly during efternoon shift = then t okemee oloo visible plus the ominous asell of fa305 As can be seen from the figures belos the average co untfor day shift is the highest ever The following figures show the eveneevene Uit cuen recorded over the pest too youre & illustrato un tro cL conditions ; Day Shift for June " 1 * ovember " ... " ... " " Afternoon " August March June November " Augunt 1960 . 1961 1962 1962 1960 1961 O50 150 420 370 490 110 620 p.j.c.c. os p.j.c.c. ' bak bak C C p.2.0.0 p.p.c.c. p.D.C.C. heur 2. break _ The underground employees & sup rvisors appear to have at last been edvested in the correct use of the vent- | iAcltatgiongiearaplplly ian; ces the obs rvance of the ines reculation seg rd Curing The coin edit one again in cousing zuch trouble trouble :: to the duct hozorfl Just counts token at various tis cut inspection ruulted in on average count of 850 Pa the curf The cause of this would be sttributesble to the negative negative sirflow through the colt below to 3 level 10,000 cusine were found to be entering the moin odit at ce but al hod leaked into the lover scom curcuit on foc , 2 3 lovela The oren between .c 3 & 5 levels was found to be dead A total of 6,000 cuains were leaking down through too 5 % 6 lovele service riacu into the main edit : thence poosing to No. 7 level under the influence of a 24 .. which exhousto this air slong 10. 7 level into the stope ITC6 tice the . lesting ea ere rectified it should to poccable to rv tee cae through the suit from top to bottom thus dis in - ois. fas, bang ay ay dust concreted bi veriout pointe On Ge -2- 4 << The stope drive ; rogramme is no well i tase de on effort to speed up this progrenc most loge : P.VCL wa. being driven are 6 high x 5 tide instone of the all ^en of 24 wide and 31 high ia ^' a4? cut jer gainst It is now recsible to born lire to to one 5 shift which gives an advance of 11 feet er dog ra the previous methode advanec of approx 4 feet per day untel elthor elthor a MessitarBi 7Me4ss1itaricMeosscitoarri Pdoorszt o InpcelsiacrocnotinGuievteon baneoctdhoer conthvo ernsto iznlnyantoree d ""-t.. stopa drive connections will have been effected irizg | ~ the present sorgiral areas a truch botter cleanding cot * | -. particularly noticeable should be the improved conditions during efternoon shift An interesting point is in regard to thr ~ ustcounte positions positions recorded at the scrager have good fresh air because it poses These oper tora chould poses dircet to them from the- the intake erent via various levels The evertge courte vcconfe vero 430 & 610 pip.c.c. for day and afternoon chifte resectivel It can therefore be readily seen that the ventilation officer - Nos virtually an impossible toot in countorocting the dusty mire at osphere when the fresh air is polluted to such a degroc . EOE SoRYN $ Two Richardson 60 A.F. olose A oxial Flow Thro continuo to provide for the primary circuito Their cez inoc oficativo approx 149,000 outputs is cumine of thin bouever o.19 o.19 which 107,000 cusine in fresh air gut unde oficativo f.unh throughput of approx 714 + Comp 7 This soon is serviced by the AST -ta th of 548. It was found to be forcing com 7,000 11. 1 -ta the workingo of this however 3000 cuti 'vero luskim t^033 vero the door positioned north of the surfnco risc tre bol rucire the fore Inted A volume of 54,000 cusine it toine draen into the cine via the surface rice at 548. ing offici expect to speed up this fen in the near future " co izer ore ite output to approx 85,000 cuains which is still well belor ito capacity Because of the increased pressure difference hotmoon the two some however a greater circuit could oventusto wlece the brattico leakages arz OvercOIC The 57,000 cuaino gassing through the fan travel Joon 16,500 cusine No. 4 Suit and split at Ho 6 level 16,500 cusine going _ +, south & 24,000 c^,,ainegoing north The remaining continues down fo 4 mult to No. 7 level At present a door ic oited in o 3 Adit Just veut of 7o 4 level thus preventing the air of the lower levels possing to the upper levolo A new ition betesen os 5 6 levels in o 3 Adit has been been prepared for the door * it will be gited in the near future The volumes assured tere so follows 439 Cliff Crening ixhuuut 12,000 1-0 120 " * 12,000 ou u ee sae m TOTAL 241,000 cunv~ * No. 5 level Surface Wise knw cs. vend Surface Pe | ee - The rombining 30,000 cusine 4,000 24,000 zust therefore be lesking into the lower sona circuits through the poorly enceted bratticon between the two seams LOVE SIAN CICHTT The primary fon cervicing this sons is situated at t cliff Face in the urpur Goat at ords 490 ' effective brattice como 100 est of the fan prevents leakage of tir fr^ the upper scom into the Tan direct It was fun to be czituot 0 6030 47,500 cuaine from the lover cean of which only 55,000 cuzina Lore found to be entering through the intake nry The 30,000 cumiza entering from the upper secc as cuains revicusly . explained would give an sctual intake of 83,000 cuains to this circuit of which however only approx 64 in frech bir The volumes acnsured we so follows . Main dit !! Cliff Oponing No. 2 Cd If Intake a 11,000 cuzi 1,300 " : 5,00 " No. 4 * " * TUT 10,00 1,500 Surface Ton TRATENT TRATTENTT RATTENT BALT Exhaust a 92,000 Cutine Conditions in the mill appear consistent with previous inspections - Particularly noticcoble at night me the dust hog^ currzurding the sill & adjocent creas This in turn it counto ring the mine strosphere > no doubt contributso tomrus the high ecunts recorded both underground & in the plant Three Gegerste dust taken at the size bench recorded 1000+ & 650 p.p.c.c. Curing afternoon chift inspections 7 ono takon after lunch during day shift gave a concentration of 650 p.D./.C Two inspections me done one during sey sheft & the other during afternoon shift The sve one counts being 695+ 770 p.p.c.c. /ctively Ive oge dust counts recorded are as follows June September Novcaber August December March June 1960 1960 1960 1961 1961 1962 1962 300 420 460 390 510 300 730 p.p.c.c. p.p.c.c. " ... " * 20 430 440 460 435 250 700 p.1.c.c. p.1.c.c. " " . ts 320 410 p.F.C.C. p.F.C.C. p.F.C.C. " hist The eve oge dust count is the hist 6 Conditiona hozever did not agreer orect orect 44 ces. T vies inspection except the one in arch 1,12 ..cl ota dt emphasises the fruitlessness of tryin to To conditione by visual observatione only The overre overre duct count recorded in March who one of the losest ever The Tacos Tacos ball thi was explained in detail in the forch report report , acecec/lscce arrangement arrangement uch affort & money is still bic 1 tt: ue 2. te control the durt at its source 211 2. punto tutale to vor beceuse the suction in most if not all hot hot end 10p 1.6 & therefore incapeblo or drawing all the test 5 to the 4 collection unito Tko unita must therefore is l'exal l'exal dis gusto cececially then one considers the reart of durt keing exhausted to otmon here from them cuntil cuntil these are m cal by a coru eificient little or no improvement in comitione con be cr ected it pricunt experimento are being onductal with pilot duct collection unit of the lrg filter t~ po The FS OF DOCKB dict of n igion Tatric parafectured ir me ico The amount of time wo toro atlo to trand et the experiments wes very limited but neverthelone we gained a fairly good idea of the with ction & design Quito a munter of junt samples were obtained by us but owing to exceetive dust being literated during certal . operitions thus dusting up the slide the first olido had to be discorded - a new campling plan formulrted Five soto of samples were firoily recorded st various intervols se alg~-nbaloz opreathe The wit en opreathe opreathe on 5 of cup Dafo The cycle woigrli~ i n4i for 2 colls litara 27 sarito the run to chchiring a clean the n4i rutoantic non lu vrics by eltoran 2. but cycle on the day borcal borcal dust extruction uten being used to 1 ratione ore ue er Ilous settle settle Results ann ann an follownt 5 sinutes 60 " 75 " aftor " 11 coll^gso " St 670 teelets 120 270 105 120 175 100 so " 100 " * 150 " " * 210 5 minutes before next colle te Although the results do not epror ispressive at first tht Rgloantceocitlorepcreyssetnotns aAltsroemetnodboeusreimmepmrboevreedmenits o tv he t tthhee graces t expecting technicione conducting the tecta are virtually expecting * until the tests are concluded & all sato collected the alove results are of little use except they do give some_i^"co some_i^"co of the units efficiency 11 porticles in the dust vauples perce to be less tho 2 mictons The high ample recorded S Kifutes after collapse could be imod because 1 the retucl full size uit the dust lite oted during collogue will t ' joera through other ba t' collected befor being discher ad to atmos_here atmos_here GE er Conditions thr.ughout thr.ughout the mine from the surt lo would be at their worst in fret the oven oven count for day chift is the highest ever Then the omount of dust pouri .; into the wine with the fresh air is considered we kos what a hopelete task the underground porgandi lovu ^ n vo the hazard One feels however such no could be taken in the wine toward reducin d : 2t4 ans olbeg C al ot ny 4s ay . rs Haufer See" Erte - Mari by Ameen Belt MariAdit The The : Chain feedm ~~ 6 . Main dit Development 51 7 South AAlolpe ope Dusive findstype findstype findstype Duive North Alofie 53N me ee 5000 will - Duis gee 575 West stope Dane ristope Drive mth 523 EastAlific Drive ste 753 745 South Alpe -- 74 v7% 77 - 77 - 77 32 75 77 - 70 81 79 75 + 72 75 - 73 77 72 78 - 72 74 - 77 650 720 | 250 570 wee 180 S^o Ee N90 380 090 70 A.E Alope 745 iterel . iterel ae A I Leval o A.E oro Pass Riic Eest lotic Dive Experimentalslope slope Grizzly 22 N Dr. Dr. 79 " 80 -78 810 10004 680 81 78 680 757-70757-70 757-70 757-70 78.64 78.64 1000 180 78.71 78.71 " 780 exhaud anway between 76-72 stope alive 22N 32N 32N Sr. w A 243 76-72 77-69 430 430 19050 SIN RS . 25 tI. 32 425 Acreeper Acreeper Position Now stope wet stope s sAlope 77.65 176-631 763-72 763-72 77-724 7-72 180 310 qearee 470 021 et ass 3 No Belt transfer 42N Manwary EN Alope Manwary Reina Poor Chain Feder Main Adit Now 76 70's 74.63 74.63 153 280 550 14-75 14-75 - ' 73-73 200 41N 4800 LIS 41 A ea 53 ere 57 er e 57 ee ame 525 525 Westshops Anaper Anaper Position Stope Stope sw sw slife slope Now SwceriaptesrtoPfoesritDiionnive Went life Quive - East Hope live 7572 7572 76 7 774-75 778-75 778-75 - 77-67 77-67 76-69 74 - 85 W 17. 19 15007 530 335 730 440 ie No WO j tee Ce eed 14-1 14-1 14-1 14-1 Gamyby Gamyby Gamyby Gamyby on Position Position Clipa Clipa Clipa 730. Afleinen Afleinen Afleinen Shift Afleinen Shift Es stipe ,," 33_2 * 31N : 32.5 375 1125 421 wid WS ALS ALS 115 -fl 4120 " Ead stope Ar slisklieke N. Alape Drw Drw slope west slope esferwntS hfs. North Stipe Duve tecafes initio Now J. Wipe Wi repen Parition Parition Fair slipe kaper Position Position at wt NIN tad f Shop Shop Neeth dite dite Jesper Jesper P 112 1 South South Aliefer Aliefer Aliefer Drive Drive south Hope 12 we fi" fiA - Krape Parti Parti Parti J 15 J ? New Stipe 2000 fees. land Shops licistlope se78 se78 83-81510 83-81510 50 77 710 79'2-7479'2-74 75-75 gee 77-73 72-6972-69 72-69 eL y k 77-70 77-70 15001 76-69 4 Ja 77-73 _ 70 26-67 100.4 76-69 570 74 .73 SIS - all _ - FR FRE a E hye. 150 72 500 OE FOE Po x.10 x.10 Swe Het we 75-77 75-77 75-77 19-18 19-18 " 70 LGe 77-11 77-11 7777-1-111 se - < wee 7563 7563 2 Pbwnp py us * us us + ope _ aT 5) ae A Ae 4 FIN HN Ian t^"n IN 13N Rifles Rifles . . Lan - LUN 13N Ein LIN UN Famo Kero fame > 62 | 12A . U J. 15 A. 15 J : adr hr Now Now Hope ee?Position -Semper -Semper -Semper Ay W. stope Nr 2 shape le Oh Hope aft erway Position Dr.Dr. Hoppe N.E. Hope -North Aloft line Scraper Portion North Hote SE . See . Scraper Scraper Piction . - I Cm -73 7-732 is 4.So. 81-752 81-752 81-752 Sri - 76 785 150 77 76 23 - Seo 80-71 80-71 L I4 Sa -752 74 -752 J 100 670 75 ~~ 410 60.76 G00 77-74 "lo St 77 830 f Tho 79-44 79-44 -75 75 -75 3 -75 44 ose 713 S. w state : ha Hope South stope w244 = oe 777 777 744yo 744yo HFG. _ bof 744yo fA .co Hope _ YouthDistAlope Jasper PositionPosition Position 7b72's 7b72's 7b72's to 22-19 77-1144 77-1144 L40. Aiea Hawn ^"ctilLaneho 7.45PM 7.45PM 19/6/22 * , * 5.10 Pin 30/1/12 6.70 1100 cr rr a ~ station station meee itll . Bagyong Bagyong " 460 _s * . 7 . Jerrem ait lentint switch itement Aereon wait 130 . too nn 54 tlian up sender sender res res EntranEcntraence Entrance to will . - fl mous -mous 1000 340 1900+ 12 12 Jovens Jovens Dry Paten dyamona dyamona Paten en Ne levavey~-n P. aten Jynes Jynes Row then then forst plo 2.Adel 2.Adel PickinPgicking station Noz Quaid 230 ke ek 9 Sir 737 1000 1000 StronSgtrong EasterlyEasterly Breeze