San Juan Record | 1934-07-26 | Page 6 | Adding to Gold Supply

adding to gold supply gold cold in the mount mountainous alous dumps of the great rand mining district of africa may be saved by the invention 0 of a johannesburg man the metal Is of 0 such low grade that ordinary methods of extracting it are unprofitable secret expert experiments ants which are said to have been successful have been stopped pending the lie taking out of patents most of the gold of the world Is now obtained as in the rand hand by deep mining froni from quartz rock the rock Is crushed and treated by amalgamation or cyaniding cyan iding to recover the gold contained in it about six pennys dennys worth of gold are on the average recovered from every ton of rock and the crushed rock Is deposited la in large dumps