N.Z. Ores Grow Bright
J‘ the modern electric bulb, the metal filament is made of tungsten. The principal ore for tungsten is scheelite, which is mined in New Zealand at Glenorchy, Paradise, Macrae’s, Stoneburn, Hyde and Barewood, Otago; and at Wakamarina’ Valley, Marlborough. As the ore produced in New Zealand is of high quality, more and more is demanded by electric bulb manufacturers. During the war period the Hmpire’s supply was commandéered, and after that period the price slumped considerably. Up to December 31, 1928, ore valued at £306,272 was exported. Now, the price has hardened, and we believe that Phillips Lamps, who are now manufacturing in England, preferably buy tungsten from New Zealand produced ores, because of the high quality of the scheelite ore exported.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19300530.2.83
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Radio Record, Volume III, Issue 46, 30 May 1930, Page 37
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126N.Z. Ores Grow Bright Radio Record, Volume III, Issue 46, 30 May 1930, Page 37
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