热潮从这里开始,第三部分:“街道铺满了黄金”——投机、贪婪和失望,1849年至2010年

IF 0.3 4区 哲学 Q4 GEOSCIENCES, MULTIDISCIPLINARY Earth Sciences History Pub Date : 2023-01-01 DOI:10.17704/1944-6187-42.1.41
Elizabeth Hines, Michael Smith
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引用次数: 0

摘要

有利可图的金矿开采开始于美国,1799年在北卡罗来纳州的卡巴鲁斯县偶然发现了一块17磅重的金块。北卡罗来纳的黄金产量在19世纪30年代至40年代达到顶峰,数百个矿山每年为国民经济贡献数十万美元,1837年在夏洛特建立了一个联邦分支造币厂来加工皮埃蒙特的黄金。1848年,在加利福尼亚发现了更丰富、更广泛的金矿后,北卡罗莱纳的金矿开采量大幅下降。然而,没有加入西部淘金热的北卡罗莱纳的淘金者继续在皮埃蒙特的矿井中工作,使用越来越复杂的欧洲和南美技术,以及新的创新,如来自加利福尼亚的水力采矿技术,直到内战爆发。从重建结束(1877年)到1920年,北卡罗莱纳的金矿开采是零星的,通常是由外部投资者资助的,或者被用作黄金和股票骗局的诡计。以黄金和白银为次要产品的铜矿开采,使用越来越复杂的技术和相关的环境问题,推动了这一时期的大部分采矿热潮。在20世纪30年代的大萧条之后,黄金产量缓慢增长,直到第二次世界大战,但从未成为一个主要产业,因为它们被美国西部、阿拉斯加、加拿大、澳大利亚和南非更有利可图的金矿所超越。从20世纪70年代到今天,根据市场上黄金的价格和环境法规的要求,北卡罗来纳州(和南卡罗来纳州)先前的矿区继续使用氰化物堆浸技术进行检查,探索和谨慎开采。虽然数量不多,但到2010年,这些有限的租赁采矿项目已经开采了200多万金衡盎司的黄金和近100万金衡盎司的白银。正在进行的Haile矿(南卡罗莱纳)项目的未来开采将在未来十年大幅增加这一数量。尽管如此,卡巴拉斯县仍然保持着世界上最大数量的大块(一磅或更多)金块的记录,是北美第一次淘金热的中心。
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THE RUSH STARTED HERE, PART III: ‘THE STREETS ARE PAVED WITH GOLD’—SPECULATION, GREED, AND DISAPPOINTMENT, 1849–2010
Profitable gold mining began in the United States with the accidental discovery in 1799 of a seventeen-pound gold nugget in Cabarrus County, North Carolina. North Carolina’s gold production peaked between the 1830s and 1840s as hundreds of mines contributed hundreds of thousands of dollars a year to the national economy, necessitating the 1837 construction of a federal Branch Mint in Charlotte to process Piedmont gold. Gold mining suffered a major decline in North Carolina after the discovery of the richer and more extensive gold deposits in California in 1848. However, the North Carolina gold miners who did not join the western rush continued to work the shafts of the Piedmont using increasingly sophisticated European and South American technology, as well as new innovations such as hydraulic mining techniques from California, until the advent of the Civil War. From the end of Reconstruction (1877) to 1920, gold mining in North Carolina was sporadic and often funded by outside investors or used as a ruse in gold and stock scams. Copper mining, with gold and silver as secondary products, using increasingly complex technology and associated environmental issues, drove most of the mining fervor during this period. Following the Great Depression of the 1930s, gold production slowly increased until the Second World War, but never became a major industry as they were out-competed by the more profitable gold fields in the western United States, Alaska, Canada, Australia, and South Africa. From the 1970s to today, dependent upon the price of gold in the market and the requirements of environmental regulation, prior mining districts in North (and South) Carolina have continued to be examined, explored and cautiously mined using cyanide heap leach techniques. Although few in number, these limited lease mining projects have extracted over two million troy ounces of gold and nearly a million troy ounces of silver by 2010. Future extraction by the ongoing Haile Mine (South Carolina) project will increase this amount substantially in the next decade. Nevertheless, Cabarrus County continues to hold the world’s record for producing the greatest number of large (a pound or more) gold nuggets and was the epicenter of North America’s first gold rush.
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来源期刊
Earth Sciences History
Earth Sciences History GEOSCIENCES, MULTIDISCIPLINARY-HISTORY & PHILOSOPHY OF SCIENCE
CiteScore
1.00
自引率
0.00%
发文量
1
审稿时长
>12 weeks
期刊介绍: Earth Sciences History promotes and publishes historical work on all areas of the earth sciences – including geology, geography, geophysics, oceanography, paleontology, meteorology, and climatology. The journal honors and encourages a variety of approaches to historical study: biography, history of ideas, social history, and histories of institutions, organizations, and techniques. Articles are peer reviewed.
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