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Author: Mariusz Skonieczny
Publisher:
ISBN: 9780984849017
Category : Antiques & Collectibles
Languages : en
Pages : 108
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Book Description
Gold mining is arguably one of the most misunderstood industries in the field of investing. Many investors lack a basic understanding of how gold is produced and have unrealistic expectations about how long it actually takes. They are confused when mining companies encounter hurdles that must be overcome. Some seem to think that starting a mine is like turning on a switch. As a result, the prices of gold mining stocks are subject to wide volatility. In this book, you will learn what it takes to produce an ounce of gold from beginning to end. You will read about all four stages of gold production, from exploration and mining to processing and refining. The topics covered include the different types of gold deposits and how they are found, as well as drilling techniques and how deposits are classified. Other topics include mining methods, such as bulk extraction and sublevel stoping, and an overview of special techniques used to process refractory ore - the most difficult type of ore to process. Finally, you will learn about dore bars, gold purity requirements, and the exchanges that specialize in buying and selling gold."
Author: Mariusz Skonieczny
Publisher:
ISBN: 9780984849017
Category : Antiques & Collectibles
Languages : en
Pages : 108
Get Book Here
Book Description
Gold mining is arguably one of the most misunderstood industries in the field of investing. Many investors lack a basic understanding of how gold is produced and have unrealistic expectations about how long it actually takes. They are confused when mining companies encounter hurdles that must be overcome. Some seem to think that starting a mine is like turning on a switch. As a result, the prices of gold mining stocks are subject to wide volatility. In this book, you will learn what it takes to produce an ounce of gold from beginning to end. You will read about all four stages of gold production, from exploration and mining to processing and refining. The topics covered include the different types of gold deposits and how they are found, as well as drilling techniques and how deposits are classified. Other topics include mining methods, such as bulk extraction and sublevel stoping, and an overview of special techniques used to process refractory ore - the most difficult type of ore to process. Finally, you will learn about dore bars, gold purity requirements, and the exchanges that specialize in buying and selling gold."
Author: John Walter Gregory
Publisher: Legare Street Press
ISBN: 9781017840810
Category :
Languages : en
Pages : 0
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: R. A. F. Penrose
Publisher:
ISBN:
Category : Gold mines and mining
Languages : en
Pages : 190
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Book Description
Author: Mears Chlorination Company, Philadelphia
Publisher:
ISBN:
Category : Gold mines and mining
Languages : en
Pages : 222
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Book Description
Author: Edward A. Elevatorski
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 218
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Book Description
Author: Eleanor Herz Swent
Publisher: University of Nevada Press
ISBN: 1647790077
Category : Technology & Engineering
Languages : en
Pages : 323
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Book Description
Winner of the 2023 Clark Spence Award from the Mining History Association! An account of the creation of a modern, environmentally sensitive mine as told by the people who developed and worked it. In 1978, a geologist working for the Homestake Mining Company discovered gold in a remote corner of California’s Napa County. This discovery led to the establishment of California’s most productive gold mine in the twentieth century. Named the McLaughlin Mine, it produced about 3.4 million ounces of gold between 1985 and 2002. The mine was also one of the first attempts at creating a new full-scale mine in California after the advent of environmental regulations and the first to use autoclaves to extract gold from ore. One Shot for Gold traces the history of the McLaughlin Mine and how it transformed a community and an industry. This lively and detailed account is based largely on oral history interviews with a wide range of people associated with the mine, including Homestake executives, geologists, and engineers as well as local neighbors of the mine, officials from county governments, townspeople, and environmental activists. Their narratives— supported by thorough research into mining company documents, public records, newspaper accounts, and other materials—chronicle the mine from its very beginning to its eventual end and transformation into a designated nature reserve as part of the University of California Natural Reserve System. A mine created at the end of the twentieth century was vastly different from the mines of the Gold Rush. New regulations and concerns about the environmental, economic, and social impacts of a large mine in this remote and largely rural region of the state-required decisions at many levels. One Shot for Gold offers an engaging and accessible account of a modern gold mine and how it managed to exist in balance with the environment and the human community around it.
Author: John Walter Gregory
Publisher:
ISBN:
Category :
Languages : en
Pages : 35
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Book Description
Author: Robert Henderson Ridgway
Publisher:
ISBN:
Category : Gold mines and mining
Languages : en
Pages : 84
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Book Description
Author: Joseph Colin Francis Johnson
Publisher: Createspace Independent Pub
ISBN: 9781481090988
Category : Crafts & Hobbies
Languages : en
Pages : 182
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Book Description
This is a book for people with an innate curiosity and desire to learn about one of the oldest fascinations in human history. Gold mining is the removal of gold from the ground. There are several techniques and processes by which gold may be extracted from the earth. It is impossible to know the exact date that humans first began to mine gold, but some of the oldest known gold artifacts were found in the Varna Necropolis in Bulgaria. The graves of the necropolis were built between 4700 and 4200 BC, indicating that gold mining could be at least 7000 years old. Gold objects are plentiful in the Bronze age, especially in Ireland and Spain, and there are several well-known possible sources. Romans used hydraulic mining methods, such as hushing and ground sluicing on a large scale to extract gold from extensive alluvial deposits, such as those at Las Medulas. Mining was under the control of the state but the mines may have been leased to civilian contractors some time later. The gold served as the primary medium of exchange within the empire, and was an important motive in the Roman invasion of Britain by Claudius in the first century A.D., although there is only one known Roman gold mine at Dolaucothi in west Wales. Gold was a prime motivation for the campaign in Dacia when the Romans invaded Transylvania in what is now modern Romania in the second century A.D. The legions were led by the emperor Trajan, and their exploits are shown on Trajan's Column in Rome and the several reproductions of the column elsewhere (such as the Victoria and Albert Museum in London). Under the Eastern Roman Empire Emperor Justinian's rule, gold was mined in Balkans, Anatolia, Armenia, Egypt, and Nubia. Gold was first mined in the area of the Kolar Gold Fields (KGF) in Bangarpet Taluk of Kolar District of Karnataka state, India, prior to the 2nd and 3rd century A.D. by the digging of small pits. (Golden objects found in Harappa and Mohenjo-daro have been traced to KGF through impurities analysis-the impurities include 11% silver concentration, found only in KGF ore.) During the Chola period in the 9th and 10th century A.D., the scale of the operation grew. The tradition of mining gold started at least as early as the first millennium B.C. The Champion reef at the Kolar gold fields was mined to a depth of 50 metres (160 ft) during the Gupta period in the fifth century A.D. The metal continued to be mined by the eleventh century kings of South India, the Vijayanagara Empire from 1336 to 1560, and later by Tipu Sultan, the king of Mysore state and the British. It is estimated that the total gold production in Karnataka to date is 1000 tons. Mining of the Hungarian deposit primarily aroung Kremnitz were the last largest of the Medieval period in Europe. The discovery of gold in the Witwatersrand led to the Second Boer War and ultimately the founding of South Africa. The Carlin Trend of Nevada, U.S., was discovered in 1961. Official estimates indicate that total world gold production since the beginning of civilization has been 4.97 billion troy ounces and total Nevada production is three percent of that, which ranks Nevada as one of the Earth's primary gold producing regions. This is a great book to learn the processes of gold mining and will give you the tools to build your own small gold mine if you so please. Ever asked the question, ''how is gold mined?'', ''where to get goldwell'', well look no further. prospecting for gold? This is your goldmine!
Author: R. A. Penrose
Publisher: Createspace Independent Publishing Platform
ISBN: 9781523957262
Category :
Languages : en
Pages : 62
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Book Description
Gold was known by the Indians to exist in the United States long before the white people discovered it, but unlike the Indians of Mexico, the more northern natives did not make elaborate use of it, and it did not seriously attract the attention of the settlers until shortly before the beginning of the nineteenth century. No very important mining, however, was done until after 1800, when a little gold began to be obtained in North Carolina. Long before that time the gold of California had also been known to the natives and to the Franciscan monks, but that country then belonged to Mexico and was not taken by the United States until 1846...
