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GeoSiberia 2007 - International Exhibition and Scientific Congress
- Conference date: 25 Apr 2007 - 25 Apr 2007
- Location: Novosibirsk, Russia
- ISBN: 978-94-6282-090-6
- Published: 25 April 2007
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The environmental impact in the Zaamar gold mining zone of Mongolia
Authors Ch. Bolorchuluun, D. Tuvshinbayar and B. BuyantogtokhAbstract
The mining sector is a major contributor to the Mongolian economy. Many ongoing
operations are managed in a sub-optimal way leading to significant environmental
damage and production losses.
Changes in hydrological regimes remain a significant problem, particularly for
placer gold. On balance, current mining practices are inefficient and use excessive
process water, thus overtaxing surface waters and underground supplies, and also
generate excessive effluent, which is difficult to manage and poses a threat of uncontrolled
discharges of slurry. In addition, where rivers are illegally dredged and where
tailings are discharged into surface waters, turbidity of surface waters is a major concern.
The water pumped from mines of all types and discharged into open surface water
bodies may also cause flooding, leading to the formation of new, transient wetlands,
which generally fall dry once the mine ceases to operate.
This paper describes a general overview and some methodologies to use remote
sensing techniques for change detection in Zaamar gold mining district of Mongolia.
Keywords: change detection, environment, multi-temporal satellite data, mining
activity
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