Show adding to gold supply gold in the mountainous dumps of the great franl ruining mining district of africa afric a may be saed by the invention of a johannesburg man the metal is of such low grade that ordinary methods of extracting it ar are unprofitable humik secret experiments which which are said to have been successful have been stopped pending bendin the taking out 0 of f patients patents most of the gold of the world is now DOW obtained as in the rand by deep mining from quartz rock the rock is crushed and treated by amalgamation or cyaniding cyan iding to recover the gold contained in it about six dennys pennys worth of gold are on the average recovered from every ton of rock and the crushed rock is deposited in largo large dumps |