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    had a greater impact than any other discovery until dynamite was invented by Alfred Nobel in 1867. Mining technology,like that of all industry,languished during the Dark Ages. Notably,a political development in 1185 improved the standing of mining and the status of miners,when the bishop of Trent granted a charter to miners in his domain.

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    Environmental impact assessments (EIAs), required in more than 100 countries including Canada, identify potential sources of water contamination at proposed mine sites, and the environmental management strategies that the mining companies intend to use to limit or prevent water contamination.

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    Sep 21, 2010· The mining watchdog group Earthworks estimates that a standard 18-karat wedding band leaves behind 20 tons of ore and waste rock. Moving that much earth doesn't just require a lot of energy. It can also lead to toxic mine drainage, probably the biggest environmental concern associated with gold-mining.

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    The site also includes a section on hydraulic mining, a destructive form of mining, now banned, in which water cannons were used to blast away the earth to reach the gold seams. References U.S. Geological Survey, 2005 Minerals Yearbook Gold.

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    The direct economic impact of gold PwC 1 Executive summary Background As part of its work as the market development organisation for the gold industry, the World Gold Council commissioned PricewaterhouseCoopers LLP (PwC) to analyse the direct economic and fiscal contribution of gold in the worlds major gold producing and

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    The Gold Rush, positive for California in so many ways, had a devastating effect on the state's environment. Many of these problems were directly related to gold-mining technology. The process of hydraulic mining, which became popular in the 1850s, caused irreparable environmental destruction.

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    Mining uses water primarily for mineral processing, dust suppression, slurry transport and employees needs. In most mining operations, water is sought from groundwater, streams, rivers and lakes, or through commercial water service suppliers.

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    Gold miners too take special care to make the impact of mining for gold as light as possible. Reclaiming land to its previous natural state is the final and perhaps most important step to ensuring the process of obtaining gold doesnt result in permanent damage to the landscape.

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    Sep 21, 2010· The mining watchdog group Earthworks estimates that a standard 18-karat wedding band leaves behind 20 tons of ore and waste rock. Moving that much earth doesn't just require a lot of energy. It can also lead to toxic mine drainage, probably the biggest environmental concern associated with gold-mining.

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    The open pits and waste rock disposal areas are the principal visual and aesthetic impacts of mining. Underground mining generally results in relatively small waste rock disposal areas ranging from a few acres in size to tens of acres (0.1 km2). These areas are typically located near the openings of the underground workings.

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    Health and safety company Boletshe Trading Enterprise, a 100% black-owned outfit, states that the gold mining industry may cause health hazards for mineworkers and its surrounding communities, as a result of the short-term effects of gold mining exposure.

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    An independent report produced for the World Gold Council by development economics agency Maxwell Stamp. This study builds on the other research detailed here, with a wide range of additional industry sources, and provides a broad and detailed set of indicators demonstrating how formal gold mining contributes to socio-economic growth and

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    There are different phases of a mining project, beginning with mineral ore exploration and ending with the post-closure period. What follows are the typical phases of a proposed mining project. Each phase of mining is associated with different sets of environmental impacts. 1.1.1 Exploration A mining project can only commence with

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