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Hawera Star, Volume XLVII, 19 June 1928, Page 10

Tn the goldfield not a hundred miles from. Dunedin, a dark, heavy substance, Varying from fine isand to lumps the size of shot, was frequently found by the miners when "washing up.” A great deal of the roughest. of this was washed out of the box, but a quantity upas generally retained, so that the fine gold among'st it could be extracted by means of quicksilver. After that it was looked upon as absolutely valueless. About three weeks ago a resident of the district, thinking that the substance resembled alluvial tin, had a sample taken to the' Otago School of Mines. The assay Was indeed a surprise, as this supposedly valueless and frequently cured "black sand,” as it was ical'led, couI a.ined no less than IAO on Titos of gold lo the ton, and also quantities of lead, copper and tin. Tt is certain that very little "black sand” will (be -wasted in future, and much that has been discarded can be recovered by going over the tailings.