Document K6N8Gnv29jyeDyrpqEx9yxjkK

FILE NAME Colonial Sugar Refinery CSR DATE 1963 DOC CSR070 DOCUMENT DESCRIPTION Company inspection Results - Ventilation Report for 1963 owen ae e o- . VEITTIATION REPORT FOR 1963 _ ventilation During the year 1963 the following alterations veru made to the ventilation set up at Colonial Nine The 60 A.P. Richardson frm situated at 54 South Rise and which was acting as an intake fan was turned around to act as an exhaust fan In conjunction with this the No. 3 Adit van blocked off West of 5 level 6 Dr. South was blocked off North of the 68 South manway and the No. 4 Adit was blocked off west of 6 loval The aim was to draw air down the main Adit and into the 5 6 7 and 8 levels via the service rises connecting thoce levels with the main adit and thon distributed from the levels into the stores and drawn back by the exhaust fans and domicasted through 41 South 42 South 60 South 611 South 612 south and 613 South manways into exhaust channels 4 Dr. South and 54 South Rise satisfactory After a trial run this did not prove very Theoretically it should have been all right but in practice it didn't A complete survey of the mine was then carried out and the following facts were found The fan at 42 South was exhausting fresh air picked up through the fall and from lezks in the 1 2 and 3 levels Also much dust was being generated in the main edit due to the velocity of air coning through To counteract these a programme of bratticing and door construotic vas commenced and the following work was carried out . All manway and chutes veru bratticed off on the No. and 2 fratrilled No. levels doors fratrilled North of the grisely positions the was service riseosn those two levels were uncovered air allowed to drawn from the south openings of these levels and entered the Kain Adit via the servico rises This had an adventa oouseffect on the dust sanc previously mentioned ee --" ees : millock millock The lo 7 service rise which was being usod so a pass was then opened up and slao No. 5 was out back alightly to control the amount of sir entering the No. 5 level Thin ensured that air would be in down to the furthest point of workings . Another To stop leakago and also make use of air entering through fall estimated 50,000 cfm the brattice along 4 level upjor seam vas reconstruc and the opening from 43 South stope into oliff wall was sealed off trattice was built along the 4 level lower sean stoped on the sant side and the manway and chutes of 41 and 42 south were bratticed off over the upper sezm The samo 68 as also 65 South and South was adopted in 50 518 523 This meant that the exhaust would then serve the lower scene in 5 level and 6 lavol and * .1 an independent circuit and 53 South fan at 42 South be more or less ote sys sommes ew eee ce emmn ; niee To isolate the other exhaust fan air doors were then irate t^,d in 3 Adit Went of 5 levol also East of 5 level 6 Ir South North of the No. 4 ^dit3 ^ditmost of 6 level and 7 Dr. South Just north of 75 South This had the desired effect and exhaust air was doumonsted , through with 76S 778 and 785 mamrays as also along 5 Adit connecting South fan at 54 South to theintosurfathce ereturn airway of No. 4 A^A^ ititand via exhaust : oo advantago The Isakago of 50,000 cfm through fall was used to test to ventilatu stores 778 and 785 alco longwall exparizontal stove and 6 Dr. South stove . enteringto workings from following auxiliary amounts 73,000 At present amount of effective air approximately 22,000 c"wmhile the exhaust 4 level exhaust fan and 71,000 ofm from 5 level to there two exhaust fine the wine workings exhaust fan In addition fane being employad~-- I PLAINTIFF'S EXHIBIT 105030 105030 come srry Pret + mobane sncahse toe al oem ' 5 ane + an fi , . : 18 Kech E 4" 2 Hec EP o Richardson * ' 7 Richardson 2p* 4 Richardson 3 Richardson 3 2 Richardson 4 SD Giving a total of 36 auxiliary fans 2oR . To cool the air entering the rins and also to l v cust generat^>^by cnveyor belt and movement along w^/ins^/it air and water syr~-yavere installed installed at 100 intervals along the main s^ it Tuture development programe which will aid the ventilation is the cutting of a barrier pillar from north to south betwem the 7 and levels This will enable the air to be circulated to better advantage in the lower levels The connection of the Hain Adit with No. 9 level vill solve a problem which exists at present on this levol Also the desirability of a shaft in the North end of the mine to be used for exhaust purposes is being given much consideration The ventilating of the workings North of the main edit is presenting more and more of a probleImn the No. 6 level this kua been partially overcome by placing a booster fan on the No. 6 vica rise blowing Borth A similar situation exists in the No. 7 lonel and a fen situation is being installed there to alternate the situation Dust control is still a major problem due mainly to the . nature of the operation and although agways have been installed in all ore pacsos and chutes and watering down of dry ore being enforced om, before seroping operations commence the problem still exista anecaeee AttachAtaechedd recentplan showing brattices prinary airways doorn sec ndaryand exhaust as also air flows A. MULHOLLAND * . es ne we Mh itlte ee. r 8th January 1964 4 et: ee Bs se o- . .o . 3 - 6 : - . . e - ay oe} . 3. : 7 rr ae er FMR ae, 4 . wees) a 8 4 Oe IEE mmm mee + etme Meeh tH? a