نتایج جستجو برای: artisanal gold mine
تعداد نتایج: 107584 فیلتر نتایج به سال:
The uncontrolled spread of illegal artisanal small-scale gold mining (ASM), popularly termed “galamsey” in Ghana, has, for decades, impacted adversely upon water bodies, soils, wildlife, human health, and safety. A lack of understanding, however, of the types of galamsey, their operational attributes, and their relative impacts has unfortunately hindered an effective policy response despite num...
This is a study of the impact of cyanide from mining waste on riparian communities, primarily vegetation, near Whitewood Creek, downstream from Homestake Gold Mine in Lead, South Dakota. Cyanide is used in gold processing, and the effluent, until fairly recently, was discharged directly into Gold Run Creek which empties into Whitewood Creek. Vegetation, soil, and water were collected from four ...
This report presents three new potassium-argon isotopic age determinations of minerals associated with epithermal alteration from the Toodoggone district, north-central British Columbia. The Toodoggone area has received extensive exploration attention over the past 10 years. In addition to a former goldsilver producer (Baker mine), the district contains a major new gold-silver mine in developme...
In many parts of the world, artisanal and small-scale gold mines (ASGM) employed numbers people compared to large-scale mines. The ASGM has been played a crucial role in poverty alleviation rural development, particularly developing countries. mined ore is crushed ground for beneficiation gold. grinding process involved size reduction blasted materials acquire minerals interest. This paper pres...
Phytotechnologies are rapidly replacing conventional ex-situ remediation techniques as they have the added benefit of restoring aesthetic value, important in the reclamation of mine sites. Alders are pioneer species that can tolerate and proliferate in nutrient-poor, contaminated environments, largely due to symbiotic root associations with the N2-fixing bacteria, Frankia and ectomycorrhizal (E...
Ivory Coast is a country rich in base metals and precious minerals: gold, manganese, diamond, iron, bauxite, cobalt nickel. These natural resources are exposed to destruction fragmentation by mining activities. The artisanal small-scale exploitation of gold increasingly practiced our rural areas. activities escape often the control monitoring administration. In order better constrain these on e...
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