THE MOUNT LYELL MINING AND RAILWAY COMPANY (LIMITED).

Otago Witness, Issue 2251, 22 April 1897, Page 18

THE MOUNT LYELL MINING AND RAILWAY COMPANY (LIMITED).

The Engineer-in-chargo of the mine reports for the week ending March 2(s:—N'o. 1 tunnel—Drivu extended 10ft;-total, 2?3ft. No. 4 tunnel, S.D.— Drive extended sft;—total, 6s2ft. No. 4 tunnel, SI)., No. 3 crosscut—Crosscut extended sft;— total, 179 ft. No. 4 tunnel, S.D., No. 3 winze— Winze sunk 4ft ;-total. 19ft. The chief metallurgist reports for the week ending March 26 :— Smelting plant: Both blast furnaces in operation. lOxtension of smelting plant: Mew engine room—Foundations for new roots, blowers, and air culvorts in progress; storage lncs-Sills iv place, framing, posts, and capß; No. 3 furnace—Brickwork liaish«d up to height of downcast, latter being assembled. Converter plant: Working continuously with one vessel ; 422 tons of blister copper shipped to date. Weather: Variable. A cablegram leceived says :—": —" From 12th March to Bth April inclusive a total quantity of 3939 tons of ore has bsen treated in two furnace? (each running l!)i days, work having been interrupted by the half-j early clean-up of by products and tbe relaying of the through trams), resulting in a total approximate weight of 246 tons of converter matte containing copper, 136 tons; silver, 12,650 oz; gold, 00-lou. The average assay value of ore before treatment being—Copper, 3 G2 par cent.; ' silver, 2'960i5 per ton ; gold, Q'ISJoz per ton. Up to date (April 17) a total quantity of 552 tons of blister copper has been shipped." Mr A. G. Fenwick handa us the following | information refcai cling the return published in tha above paragraph :— Taking the value of copper at £47 per ton, silver and gold at 2s 4id and £i par ounce respectively, the results give, after deducting charges, an approximate set profit of 20d per ton of ore treated.