MINING.

Otago Daily Times, Issue 17425, 20 September 1918, Page 6

MINING.

Matters in regard to the Mount ReadRosobery Mines Company, of which the Mount Lyell Company is the controlling factor, are assuming a tangible shape. Mr E. R. Crutcher, the metallurgical expert engaged in America in connection with the treatment of the Read-Rosebery ores, is still busy supervising the erection of the experimental unit at Queenstown reduction works, to enable him to determine the best electrolytio method of treating these zinciferous ores for recovering the zinc. Mr Crutcher is conversant with the methods in practice at three of the largest treatment plants now working successfully in America—one at Anaconda, one at Salt Lake City, and one in British Columbia; and the object of the local experiments is, presumably, to ascertain whether either of these, or a modification of any, or a combination of all three, will be the most suitable for treating ores, tho metal contents o£ which aro not qui to the same as those of the American ires. AUCKLAND MINING RETURNS. (Pn United Perm Association.) AUCKLAND, September 19. The Waihi Grand Junction Company during the period ended September 7 treated 7330 tons of ore for bullion valued at £11,002, compared with a yield of £17,026 from 9800 tons of ore laist year, which shows a decrease of £6023. The Waihi Company during the period ended September 7 treated 19,617 tons for a return of £25,213, compared with last year when 15,626 tons yielded £27,101, showing a decrease of £1888.