MINING NEWS

New Zealand Herald, Volume LXXII, Issue 22200, 29 August 1935, Page 7

MINING NEWS

YIELDS OF COMPANIES Mossy Creek (near GFreymouth) . Last week, 40oz. 4dwt. for 133 hours* work and 11,197yd5. treated. NEW LISTING Antonio's Hydraulic Elevating Company, Limited, which is operating near Reefton, has been listed on the Stock Exchange. The company has a subscribed capital of £13,000 and paid capital is £BS7o. STAFFORD DREDGING The directors of Stafford Gold Dredging N.L., a Sydney concern operating at Gnsymouth, announce that Mr. D. F. Fletcher, consulting engineer to Gold and Tin Development, N.L., has reported favourably on the Stafford No. 2 area, and has suggested that this area should be check bored to prove the value of the property. Mr. T. J. Shepherd, mining engineer, will be leaving for New Zealand shortly to check bore on behalf of Stafford Gold Dredging N.L. ARGO PROGRESS The Argo dredge (near Blackball)' has commenced digging operations, and everything is proceeding satisfactorily. SYLVIA DEVELOPMENT Sylvia Mines Development, Limited, which is developing an area at Tararu, near Thames, previously worked by the Sylvia Mining Company, reports that the report on the sample of 2cwt. of ore shipped to Imperial Chemical Industries, Limited, London, for treatment, has been received. Experiments carried out under modern oil flotation methods show that a most satisfactory percentage of all the metal contents of the ore can be saved. Ifc was established that in the treatment of the ore amalgamation is useless and cvanidation alono is unsatisfactory. This would swm to indicate conclusively that the percentage of values recovered in the treatment of the ore in the past could only have been exceptionally low. According to the Mines Statements, during the years 1915 and 1916 a total of 14,845 tons from the Sylvia mine was treated for a return under amalgamation and oyanidation of £20,710, or under 27s a ton. It would appear that had the present recovery methods been then available, approximately £2 19s 6d a ton could have been recovered in tho precious metals, in addition to a recovery value in base metals of approximately £2 a assuming the base metal contents of the ore treated for thoso years equalled those of the samples forwarded to London, giving a total recovery value of £4 19s 6d. Under the present prices for gold and silver, the lecovery values will be again greatly enhanced. The company is in further consultation with imperial Chemical Industries, Limited, with regard to details and costs of * suitable recovery plant,