STAINLESS STEEL.

Otago Witness, Issue 3961, 11 February 1930, Page 29

STAINLESS STEEL.

ELLINGTON, February 6. “ Stainless steel is occupying the researches of metallurgists all over the world, and just lately it has been applied to dental plates, and in a very different field to boiler plates,” said Mr G. A. Gillies, associate professor of mining of the University of British Columbia to-day. Mr Gillies is en route to South’ Africa as a Canadian representative to the Empire MinimCongress, a triennial gathering. Proceeds will be opened in South Africa on .March 24 and will conclude on May 9. The selection of South Africa oh this occasion will permit a special investigation of copper resources by British engineers from all over the world. Mr Gillies stated that recent revolutionary changes in ore treatment had resulted in a vigorous revival of mining in British Columbia. 'The Pacific coast yielded complex ores which had only lieen trilled with by gravity processes. Interminable litigation had followed the inauguration of the flotation method of treatment, but the new method was now being widely aplied. “ I think the price of zinc must fall as the lesult of scientific developments” said All Gillies. “Zinc is used extensively for galvanising and in the making of brass. Rustless steel trespasses on on both these. Another influence on zinc i allies is the substantial supply yielded in the production of copper. Previously the zinc was lost in smelting but the flotation process permits copper producers to secure the zinc as a by-product. They are able to offer it at prices which cut out the pure zinc mine.” YY.hile in South Africa the geological section of the congress will inspect? the copper concessions in northern Rhodesia. Here half a-dozen aeroplane stations have been established for air survey work. After mapping prospecting parties are sent for a preliminary investigation of copper deposits.