Document 4M9EwX3YGE7YjwKn3ngYv2Y1

FILE NAME Colonial Sugar Refinery CSR DATE 1958 Feb 14 DOC CSR132 DOCUMENT DESCRIPTION Letter to Govt from Australian Blue Asbestos with Company Inspection Results 34 my : L- A>USTRALIAN BLUE ASBESTOS LIMITED TELEGRAPHIC ABORES BLUCASBESTOS BLUCASBESTOS WITTENOGM WITTENCOM GONGE WESTERN AUSTRALIA Mr. J. M. Faichney District Inspecter of MinsE KLEGORLKILEGORELIE 4, Lear Sir * 14th February 1958 December 1957 In answer to your letter dated the 23rd which was forwarded by surface mail please find bolow the information requested COLONIAL SESTION 1 No change vas made to the major airflows ~ N Intake . So.1 Adit 5,000 4.f.E. bat No.1 Level 17,000 c.f.z. oe, Ho.2 Level 15,000 .m | x : TOTAL 67,000 c.f.z. nn Bscok = : He - ee AON eo ge 9 3f ot i alan! Kain Fan Exhausta 70.000 c.f.z. The development changes which directly affected the ventilation No.3~,,tive No.3~,,tive (a) broke through to Cliff Face (b) 9020 West Stope Drive connected connected to 1320 Cute and Hanway Rise giving a through ventilation 4 Secondary Ventilation Appliances 2D Fans 24SD Fan 35D Fan ee eae eee 13 in use 1 in use 1 in upc and 3 spare SD Fan 1 in use i"; 4SD Fon eee spare Venturi Elouer 1 spare 5 a The dust kozard at the discharge discharge of the Cre Conveyor vas eenlimeixnhsatuesdt bfyenbdoixsichnagrgianrgodiscuhargningdtotheatdmiossspbhaerrgee rulley and instelling J. N. PLAINTIFF'S EXHIBIT Bayone 102860 102860 102860 . 2 7.; Australien Blue Asbestos Ltd. About the middle of the year mining at the Wiltenoom mine was stopped and operations concentrated at the Colonial mine At this mine'^ mine'^ 60 axial flow fen h^,s been inutolle st an opening to the workings on the eastern cliff face This fan exhausts 68,500 c.f.m. Hard Rock Quarries ~ Metropolitan ^ res The collection of the dust liberated by crushing operations in the plants associated with these quarries had apparently not been given much consideration by the own- ere One company Australian Blue Ketel ltd during the past year installed dust collector in the secondary crushinag nd pressurised the primery orusher A great improvemewnats noticed awas The instelletion of dust collection units at the other quarsr ity es . recommendwe hed n visited during May - attempted so early in this new year the companys have been requested to adhere to Regulation 150 dust . of the M.R. Act which deals with the prevention of Sot prevention Sampling and Anslysis of Fume On the 11th and 12th July two samples of fume crested by the detonation of explosives in a development end were taken The explosives A.N. Golignite 60 and Semigel were in a new wrapper chocolate brown in colour with whitish stripes on each end and the neme in white printed in the centre section The explosive materie was white the red magents cobiring being absent This testing was carried out as a follow up to the similer tests m^,deduring Jenusry February - March and November of 1956 and reported in the Annual Report for that year It was believed that this new coloured ex- plosive and new wrapping had been produced as a result of the work portion done in November when of the outer costing of of the wrepping about 50 and 70-80 wax was removed It was leter ascertained that the explosive in the new wrapper etc. was not produced followir this result but is the standard wrapping used in the Eastern States States The result of the snelysis of the two asmples resulted A ree Renu Eee ee Explosive co CO | Ratio CO 50 A.N. Gelignite 0.32 2.015 6.3 19.65 Semigel 0.11 0.55 5.0 20.35 The percentage of carbon monoxide compered favourable with the percentages obtained when portion of the wrapping and wax was removed and tested in November 1956. The percentage of CO on this occasi 0.27 was and 2.27 for CO the 602 N. Gellgnite However not compare favourably with giving a 60 ratio of 8.4 for 60 ratio of is still high and does results obtained by obtained by Mr. T.N. Kirton whe of moking previous investigations in 1938. Ratios 1:10 and 1:12 ar lower were commonly encountered in the more highly oxygensted explo sives during his work Australian Soarodf Blue Asbestos Reference Ltd. Treatment Plant - Dust Collection - For some years pest efforts have been made to remove dust liberated by crushing and extraction operations at the Australian Blue Asbestos Ltd. treatment plant at Wittenoom Various install- ations have been made including dust collectors with ducting and th enclosure of various sections with roof exhaust fans A proposal for the ore treatment by a wet process was made but this did not ev ntus However during this year three Rotoclone dust collectors were installed One collector extsusts from the section consistin of Rolle Kubit breaker and screens which have been totally enclose Another collector trepe the roof discharge from the fibre collectir cyclones The third collector is connected by ducting to the othe machines such es crushers etc. instelled in the mein building It installations were completed on the 2nd October On the 3rd Octot Board of Reference on the dust in the treatment plant was held ... 3 y 7 The Board consisted of President - Dr. JoyERZEGOnt Collard A.W.U. secretary Mr. J. Broadh arst I accompanied the Board on their inspection of dust samples at positions in the plant es requested by Dr. book Joyce presented to taken on the the Board the results of these 2nd October at the same points samples and those in the plent where semp semp were taken on my previous visit on the 17th August I was asked b the President for my opinion of the alterations which I considered showed some improvement sa evidenced the dust counts I was tqhueesetmipolnoeyderbyantdhethoethuen r imoenmsbers of the Board and by the advocates f The installation of this dust collection system should meankdeoa pegrraetaedt eifmfpircoiveemnetnlty eventually if the equipment is msintsine msintsine . Aluminium Therapy the Aluminium pander has been distributed regularly at all changerooms licensed There have been no shafte where operations have been suspended and consequently no changeroommsinicnlgos investigatory Ministerial approval was given lete in 1956 for the vision of sluminium prophylaxis Cons at the Frazera mine pro- Great Western mine N.L. and the Croesus mine North Kelgurli 1912 Ltd. and ti managements notified available at the Frazers The Bluminium therapy treatment was mai mine on the 28th December 1956. However as mining operations at the Croesus mine were an application to defer the enforcement of mainly the the management This request was request was made by the changeroom for the granted The preparation of aluminium therapy has proceeded and it is anticipated this treatment will be evsil^bleearly in 1958 Fuming Accident There were eleven minor fuming scoidents caused by in those goldfields where the mines report their sccidents fumes to | Kalgoorlie Office Nine of these were in the Esst the -field^/^-^>-^field^/^-^>^ o ne nes -field^/^-^e>ac^h inthe Dundas and Yilgarn goldfieClodoslgarMdioestgoofld theas were investigated either by an Assistent Inspector or myself or @ detailed report requested from the mine Equipment Another Devis - Simpson Fleme anemometer was added to our air messuring equipment It was impossible to purchase this instru ment so one was made locally This was done at the School of Miner with the operation of the Director Two instruments were made utsheinMginoiur ngoDreipgairntamlenitnsotfrumtehentSacshoaolpattern one being retained by oot: copper The yearly tabulation of dust counts with the comparative figures for the previous year shown in brackets in sttached Thes figures will include dust counts from samples taken in crushing pla of the hard rock quarries cement industry beach sands and other crushing plants for minerals such as talc oxide and red and yell Individuel reports on visited by Assistant Inspectors ed to this Annual Report their observations throughout mines Simmons and Shenton are also attach 5-19-3-58 5-19-3-58 7 5-19-3-58 Sa MAN yA b. Gand a eree Wael TE DISTRICT INSPECTOR OF MINES - ghohn. 14/3/5 14/3/5