One Thousand Ways to Make Money by Page Fox

704. METAL EXTRACTOR.--A solution which will precipitate gold or silver

from the ore, and thus save immense sums now expended in the crushing of the ore. Such an invention would revolutionize the mining industry, and make the inventor enormously rich. Mr. Edison says: “I am convinced there is not a single abandoned gold claim in the world, where gold has ever been discovered, from which the precious ore cannot be extracted in quantities to pay a big margin of profit over the cost of operation.”