. Transactions of the Institution of Mining Engineers . Fig. 5.—Position of Cages, Guides, etc., inShaft 13 Feet in Diameter. Scale, 6Feet to 1 Inch. through the ordinary Coal-Measures to a total depth of 700 yards, after. Fig 6.—Diagram showing Economical Size of Pit-shaft, 18Feet in Diameter, for Winding. Scalf, 6 Feet to 1Inch. passing through the first 200 yards of water-bearing strata, would costas follows :— 132 TRANSACTIONS INSTITUTION OF MINING ENGINEERS. [Vol. LXII. 200 yards of water-bearing strata with cement tubbing, at £257 per yard £51,400 500 yards of ordinary sinking, at £1 per
. Transactions of the Institution of Mining Engineers . Fig. 5.—Position of Cages, Guides, etc., inShaft 13 Feet in Diameter. Scale, 6Feet to 1 Inch. through the ordinary Coal-Measures to a total depth of 700 yards, after. Fig 6.—Diagram showing Economical Size of Pit-shaft, 18Feet in Diameter, for Winding. Scalf, 6 Feet to 1Inch. passing through the first 200 yards of water-bearing strata, would costas follows :— 132 TRANSACTIONS INSTITUTION OF MINING ENGINEERS. [Vol. LXII. 200 yards of water-bearing strata with cement tubbing, at £257 per yard £51,400 500 yards of ordinary sinking, at £1 per cubic yard 14,137 Bricking, bricks, and mortar—500 yards at £1 per superficial yard 19,439 Total cost of sinking £84,976 The above-mentioned diameter (15 feet) is the finished diameter, andallows for bricking.
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectmineralindustries
