Gold Mining in North Carolina: A Bicentennial History

Midgette, Nancy Smith; Knapp, Richard F.; Glass, Brent D.

doi:10.2307/3070264

The Journal of Southern History

2001

DOI: 10.2307/3070264

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Gold Mining in North Carolina: A Bicentennial History

Nancy Smith Midgette¹,

Richard F. Knapp²,

Brent D. Glass³

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Legacy Hg-Cu Contamination of Active Stream Sediments in the Gold Hill Mining District, North Carolina

Pavlowsky¹,

Lecce²,

Bassett³

et al. 2010

sgo

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El propósito de este estudio es evaluar la evolución longitudinal de mercurio (Hg) y cobre (Cu) en sedimentos de canales activos en la parte baja del distrito minero de Gold Hill, en el Piedmont de Carolina del Norte. La minería de oro (Au) y Cu desde 1844 a 1915 produjo Hg (asociados con el procesamiento de Au) y Cu en una cuenca de 254 km 2 . Regresión lineal múltiple se utiliza para cuantificar las tendencias espaciales y geoquímicas en 93 muestras de canales activos, recolectadas en cauces principales contaminados y en localidades en tributarios secundarios. Modelos de regresión simple de dos parámetros combinando los efectos de ambos procesos de dispersión a escala de las cuencas hidrográficas (distancia río abajo) y a escala del alcance del transporte de sedimentos (arena por ciento) explican el 85 por ciento de la variación de Hg y 90 por ciento de la variación de Cu en los sedimentos de canales activos. Las tendencias de contaminación en dos diferentes medios de sedimentos, barra baja y bancos de depósitos de mayor elevación, fueron efectivamente similares cuando la influencia del tamaño del grano local se contabilizó en los modelos de dos parámetros. Modelos geoquímicos de antecedentes explican el 84 por ciento de la variación de Hg y Cu en muestras no contaminadas de tributarios utilizando parámetros relacionados al tamaño de grano, sustratos geoquímicos secundarios, y fuentes de meteorización de minerales. Más del 45 por ciento de la variación de Hg y 20 por ciento de Cu en sedimentos contaminados puede ser explicada a través de parámetros de antecedentes. Firmas geoquímicas difieren entre Hg y Cu en los sedimentos de canales activos debido a variaciones en insumos mineros, trasfondo geoquímico, y las fuentes de contaminación actual.

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Legacy Hg-Cu Contamination of Active Stream Sediments in the Gold Hill Mining District, North Carolina

Pavlowsky¹,

Lecce²,

Bassett³

et al. 2010

sgo

View full text Add to dashboard Cite

show abstract

The Rush Started Here II: Hard Rock Gold Mining in North Carolina, 1825 to 1864

Hines

Smith

2006

Earth Sciences History

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From 1799 until the early 1830s, North Carolina's Piedmont had rich surface and near-surface gold deposits. Land owning farmers were interested in improving their finances through gold mining in the slow seasons. Those unable to work their deposits leased them to neighbors or landless prospectors for additional income. Over this thirty year period, the surface placer deposits were exhausted and ended the casual off-season gold mining. Dabblers and fair-weather farmers turned miners became entrepreneurs who sought investors for the hard rock mining necessaries of labor, machinery and processing technology. State government stepped in to help them by liberalizing the terms of incorporation for mining companies. The government support of mining stock companies facilitated private profits and improved the state (and ultimately federal) money supply by adding specie and advancing industrialization in mining and, contagiously, other industries and services such as textiles and the railroads. North Carolina's early industrial leaders invested in mining stock companies. However, the heaviest investments came from Northeastern industrialists and European, especially English, mining firms that insisted upon skilled managers, labor and the best technology with which to develop their investment. Thus, a new breed of miner and mining and milling supervisor, usually immigrants from the northern states or abroad, came to dominate North Carolina's gold fields from 1825 to 1864.

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Gold Mining in North Carolina: A Bicentennial History

Cited by 2 publications

References 0 publications

Legacy Hg-Cu Contamination of Active Stream Sediments in the Gold Hill Mining District, North Carolina

Legacy Hg-Cu Contamination of Active Stream Sediments in the Gold Hill Mining District, North Carolina

The Rush Started Here II: Hard Rock Gold Mining in North Carolina, 1825 to 1864

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