Document 5kkkkR0bLmOxkjNbbg16BdKqN

- 7* ^covered duilan an alraurvey in Uarch. thla was remedied by re tiring' stoppings. i>o sore cennoctlono vere made l*tween the Hoe. 6 end y levels so that there ero nov three Openings between theae levels, (One eonneotton was reported in the Annuel report for 1956) fheao openings apparently had the effoet of reusing the air to downoaat.to ' Ko.6 lovel with the majority of Mr going off at Hoe. u at*. 6 levels and leaving o negligible amount of air to flow along Ho.5 level. mis was corrected lete in the year by Installing *a door on Ho.ti level and nov r.ora air circulates baneflolally through tha vorking* abovo Ho.5 "* level. (fining operations obove Ho.d level la Halted. A Sirocco CO** diameter two stage Aero to Hlne fan lu to be liui tailed on tho ventil ation shaft and this la expected to further Improve tho ventilation I on the mine. TTEKT PTLBAPA * OOTDPIKLD. Australian Blue Aabeetoe l.td. Thie company was visited tvlce during the year, otoe sa a routine inspection In August* and again In October for a Board of deference. (Thla Board of Kefcronce was covered In the earlier part of thla report). Tfittenoom nine; Tne intake airflow woo measured in August -~t 32*650 cfn. whilst the 60" axial flow exhausfc.fan oxhacated $0,625 .fc. The discrepancy *can only be accounted fof by Ineffective seal* ing.vof old adit openings and poor stopping at the fan. Only Halt* ' ed ainlnc proceeding lu the mine .and the 32*650 cfn. was Quito ad* equate. Klalng operations ot thla slno vere stopped on October dth. j Colonial nine; 66*500 efsu aa being exhsueted by the 60* :>x; axial flow fan Installed In the northern ellff opening whilst the in* take totalled 60*700 efm. This intake was aade tip of 28*750 cfa. - through the esln adit* 27000 cfa. through Ho.3 level, 11*950 cfa (fluoV . uatea) through Kc.2 level and e fluctuating amount (cay even roverae) through Ho.l level. these figures indicate a large volume of sir passing through tho mine, but the path taken by the Ar la vttrlsble. There is no positive airflow through the intake openings and no con stant path adopted by the air. Thla con be attributed to the Mr currents in tha gorges and along the walls of the^orge. r Ho.h level is being developed and a connection through to * the oliff fsoe la anticipated In the new yesr. a Htope drive from ^,3, level connected to a chute and manway nut up from tio.'t level and iere la a through airway by the Mein adit. (than Jfe.n lovel connects to the ellff face ventilation doors will be installed In Ha.l level to increase the amount of air flowing along Hos. 3 and h levels. CT>e majority of the utopco will then be close to these levels. Bust at the discharge :*ron the Ore conveyor bolt was causing ii hazard an;; to eliminate It* a box ae pl&ceu sroiind the discharge 'pulley t-nu an e.-.r.;*u:it fan disK.'iur-jlnt} to atmosphere outside the aloe v.is in* .ailed. C.-n;.trucUon of a no' uri.>l:tnt H the colonial mine fu-a eoi.'ivnced. '.he hirh cievuticn of trv. entrance -o the mine on the gorge lace i-nu tut. rail iiito in*- vi/ii'..- of tfir ;:or,;e should 'iiiaist in tho plant layout. It lu to uc tv-pci .hot provision for oust collect* ion. ov leaut uir.il>:- to ao<; noi.i.iuly iitp;-wvnd oi; that non i<t the Mitenone rin;it, M-. Lf-oi. tu-u". '' rri. tuorrrt ii _no,.=- iv;.. PLAINTIFFS EXHIBIT 1Q2.S4 ,q //*<<* 7 ' / t T 7