15

D.—4

Cost of Dredging Plant. Engine and pump ... ... ... ... ... £3,000 0 0 Hopper barge to carry 300 tons, with screw propeller and all fittings ' ... ... ... ... ... 6,500 0 0 - Fixed staging to carry crane, travelling pipe, carrier pipe, and wharf carried up on the beach for safety in bad weather ... 7,500 0 0 Contingencies, 10 per cent. ... ... ... ... 1,700 0 0 Total cost of plant ... ... ... ...£18,700 0 0 At first the whole extent of staging will probably not be erected. The first outlay will there fore be— Barge and pump as above ... ... ... ... £9,500 0 0 Fixed staging first required ... ... ... ... 4,000 0 0 Contingencies, 10 per cent. ... ... ... ... 1,300 0 0 £14,800 0 0 The annual cost of working will be— — Interest and depreciation 12-| per cent, on £14,800 ... ~.£1,850 0 0 Labour, fuel, stores, &c. ... ... ... ... 1,871 0 0 Putting hopper on slip and cleaning ... ... ... 100 0 0 Bepairs, wear of ropes, and other materials ... ... 150 0 0 £3,971 0 0 Total annual cost of working ...» ... ...£3,971 0 0 Time working at shingle removal = -_- total time that 3f— =130 days. Cost chargeable to same :! »J l - £1,985 10s., which on 120,000 tons is, per ton, 4d. Approximate Cost of Baper. —Preparation, nil; printing (1,500 copies), 4>lo ss.

By Authority: Geoege Didsbuey, Government Printer, Wellington.—lB9l. Price, 6d.]