and engineering journal . eld, I was than counterbalanced l»\ tie- higher average for gold tie ar, the result being that the revenue per ton was 2s. Id above that of the ii,-t effect of these factors was to reduce theprofit per ton by Is. and the total r fit i,-. £27,910. Development opei itiot were continued vigorously, andsufficient ore was added to th- - replace that mined. Work under this heading was confined in tl.,- neon |area in th,- centre of th,- property, hounded roughly bj No1 in, line -haft on the west and No. 3 incline shaft on the, i i Mm area ha- bee


and engineering journal . eld, I was than counterbalanced l»\ tie- higher average for gold tie ar, the result being that the revenue per ton was 2s. Id above that of the ii,-t effect of these factors was to reduce theprofit per ton by Is. and the total r fit i,-. £27,910. Development opei itiot were continued vigorously, andsufficient ore was added to th- - replace that mined. Work under this heading was confined in tl.,- neon |area in th,- centre of th,- property, hounded roughly bj No1 in, line -haft on the west and No. 3 incline shaft on the, i i Mm area ha- been the most promising tor some timepast, hence it will he understood that th,- results achiiduring the year were due to a considerable exti a\ t,, selectivedevelopment, and arc- probablj bj no means representativeof what development throughout the whole of the propertywould show. Prospects of encountering considerable Iof ore which would he payable with present working cost- I:li, west of No. -1 incline shaft, do not appear promis. Consolidated Main Reef Headgear. hut some encouraging values have been disclosed in the areaeast ot No. •! incline shaft, referred to last year; it isintended to explore each oi these districts 1>_\ extendingduxes at various mter\als in depth, a- it 1- important thateverj effort be made to find some extension oi the presentcentral zone f payability. Should no further areas bebund which will yield a reasonable proportion of payable 134 THE MINING AND ENGINEERING JOURNAL. J burg, Oct( bef 1. 1921. ore, and the tonnage that can be obtained from reclama-tion in worked out areas decrease, as it must necessarily dowit Iiiii a year or so, the position will become difficult; Withthe present percentage of payability and the limited numberof laces available for development in the areas selected, itwill not lie possible to maintain the tonnage in the orereserves, and a reduction in the scale of operations will haveto follow, unless the proposed skele


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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectmineralindustries