A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . 802 ORES, DRESSING OF. sheet-iron, 6 feet long and 16|- inches wide at e. At this point a ledge of wood is some-times introduced for the purpose of modifying the velocity of the water and forming a kindof shallow reservoir, so as to allow the workman to stir the stuff. At the end of the stripa cofer, f, is fixed, 11 inches deep, 30 inches square; h, settling box, 6 feet long and 30inches deep ; k, outlet for waste water. At G is inserted a filtering launder, 13
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . 802 ORES, DRESSING OF. sheet-iron, 6 feet long and 16|- inches wide at e. At this point a ledge of wood is some-times introduced for the purpose of modifying the velocity of the water and forming a kindof shallow reservoir, so as to allow the workman to stir the stuff. At the end of the stripa cofer, f, is fixed, 11 inches deep, 30 inches square; h, settling box, 6 feet long and 30inches deep ; k, outlet for waste water. At G is inserted a filtering launder, 13 inches deep,. extending across the cistern. At J a similar launder is placed, about 9 indies dee[i. Thewater comes in at a, is lodged in cistern b, flows smoothly over the feather-edged board c,falls into d ; here the orey matter is exposed to its action, a portion settles in f, the Jlorrinand other light waste then descends through g, depositing itself in the box n ; and to retainthe valuable products as much as possible, it is filtered at j, through a perforated plate cov-ering the bottom of the launder. In stiipping, care must be taken to regulate the overflowof water at c ; rough stuff must be subjected to a stronger current than finer matter, andthe bottom of the strip should be constructed with a greater inclination. In some leadmines the buddle and hutch-work is stripped to be re-jigged, whilst the stuff resulting fromthe filtering box is hand-buddled until sufficiently enriched for the dolly. When ore isassociated with a heavy matrix, and the grain breaks into a lesser size than the other p
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
