BREAKING ORE.
The questiori'how fine ore should be broken for the purpose of dressing can j never, be considered' a general one, but will remain in all cases where ore is to be dressed a special one, to be answered with regard to the special quality of the ore.' ' , j In 'ore haying the' appearance and character of 4a4 a' 'conglomerate, wherein the rock; particles and metallic particles are' breae'rifin about the size of peas, would it hot" be waste of labour (mechanical or manual) to brgak it further 'than' to' allow, the particles ! of different qualities to break the' one from the other 1 Nature favours such action by the cleavage between different materials being usually more brittle and apt. to separate than; of the - materials; within themselves, or of one of the'- mate-
rials' within itself. But independently oi the waste' of labour, the breaking into smaller particles than are required by- the nature of the ore is accompanied by-other, disadvantages besides,' because the > perr; centage of loss in' dressing' operations inicreases as the 1 size treated! decreases. This • facb has been established by long expertence where mineral-dressing'is 'a? part of' all 1 mining operations successfully carried on.— F. 'M. F. Cazin, M:E: " j
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Bibliographic details
Otago Witness, Issue 1323, 7 April 1877, Page 4
Word Count
206BREAKING ORE. Otago Witness, Issue 1323, 7 April 1877, Page 4
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