The South African Mining Journal and Engineering Record, Vol. 27: With Which Is Incorporated South African Mines, Commerce and Industries; Part II., July 27, 1918 (Classic Reprint) - Couverture souple

Author, Unknown

Couverture souple

ISBN 10 : 1334430454 ISBN 13 : 9781334430459

Editeur : Forgotten Books, 2018

Synopsis

Excerpt from The South African Mining Journal and Engineering Record, Vol. 27: With Which Is Incorporated South African Mines, Commerce and Industries; Part II., July 27, 1918

With early primitive methods, only the gold most abun dant and easily worked and ible was first sought, and this was found principally in alluvial deposits, but as knowledge, mechanical skill and tools and appliances were developed by the human race gold mining was extended to more diffit alluvial, vein, and lode deposits. Gold, when it became the counter of trade and a measure of possession, was the most eagerly sought of all possessions, and thus it became the pioneer and stimulant in mining, metallurgy and chemistry. The search for this precious metal became so intense that the alchemists sought its transmutation from other metals, which, though they failed to accomplish, won them other knowled e and gave birth to chemistry. The trading value of gold Tins been stablished by history in that no super abundance was ever obtainable and it has always been necessary to expend labour and intelligence to an extent largely commensurate to the battering value of the gold obtained. Accurate records do not exist of the actual out puts of gold in early times. But certainly they must have been small from a modern standpoint. Great outputs of gold, as of all other minerals, are a matter of recent times.

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Détails de l'édition

• Éditeur: Forgotten Books
• Date d'édition: 2018
• Langue: anglais
• ISBN 10: 1334430454
• ISBN 13: 9781334430459
• Reliure: Broché
• Nombre de pages: 40
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