Around the World Volume 3

Around the World Volume 3

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 edition. Excerpt: ... the gold found in placer diggings is in small particles, though sometimes a large nugget is found. Probably the largest ever found was at Ballarat, Australia. This was worth over forty-six thousand dollars. Here are some of the workers in a gold mine. The men are drilling in a true fissure gold vein in order to blast out the ore, and the patient donkey is waiting to take his car to the elevator as soon as it is filled. This miner is getting ready to blast the rock. First he made a hole in the rock, and then fastened in it something that looks a little like a candle. It isn't a candle that we should care to light in the ordinary way, however, for it is made of dynamite. After the miner connects a fuse with it, he will pack the earth tightly in about it. As soon as he lights the fuse, there will be a call to run. Then, very quickly, there will come a terrific explosion. Great masses of rock will be torn away. The miners will throw these into holes in the bottom of the tunnel, and they will fall into cars in a tunnel below. There are different ways of getting the gold from the rocks. That which contains very little gold is sent to the cyanide mill. We might see no sign of gold in these rocks. The stones are put through three different mills until they are ground to a soft powder. This powder is put into a great tank, into which water containing cyanide of potassium is poured. Cyanide is a substance which has an attraction for gold. The gold in the powder will separate itself from the other substances that formed the rock and is drawn off with the cyanide in the water. Now, gold is even more fond of zinc than it is of cyanide. So when this water is turned into boxes filled with little shavings of zinc, the gold leaves the water and clings more

Product details

  • Paperback | 38 pages
  • 189 x 246 x 2mm | 86g
  • United States
  • English
  • black & white illustrations
  • 1236775740
  • 9781236775740