• In the study, artisanal mining gold rushes are taken as socio-political spaces. Instead of domination and subordination actors in a rush engage constant negotiations contestations that fashion new political subjects at workplace. Work labour seen creative but undefinable unpredictable processes practices create social value. Numerous studies concur small-scale (ASM) has had significant impact...

Metal price is one of the most important parameters in the calculation of cut- off grade. The cut- off grade has the main role in determination of mine layout. Mine layout actuates mineable reserve, mine life and economic profitability. Not considering the uncertainty in metal prices can lead to a non-optimal layout. In this paper optimum underground mine layout is determined by expected utilit...

The paper examines the environmental impact of artisanal mining of gold with mercury (Hg) in Ghana. In spite of its positive socioeconomic contributions, it is well known that artisanal mining of gold contributes in no small measure to land degradation, loss of biodiversity and natural resources, deforestation, water pollution, etc. In Ghana, these environmental problems remain poorly studied. ...

In this study, the biosynthesis of gold nanoparticles by Penicillium chrysogenum, isolated from Ahar copper mine, was investigated. The gold nanoparticles were synthesized by reducing the aqueous gold ions using the culture supernatant of the filamentous fungi. The UV–vis spectrum displayed a characteristic peak at 532 nm that is very specific for gold nanoparticles. The XRD spectrum confirmed ...

according to the unique properties and many applications of nano gold powder, it was prepared from an acid leaching tail solution. the low value residual gold ions existed in acid leaching tail solution in mouteh gold mine in iran with fellow heavy metals as pollutants (fe2+, cu2+, and zn2+). preparation of nano gold particles is achieved by two steps: first, by addition of ammonia as separatio...

in this study, the biosynthesis of gold nanoparticles by penicillium chrysogenum, isolated from ahar copper mine, was investigated. the gold nanoparticles were synthesized by reducing the aqueous gold ions using the culture supernatant of the filamentous fungi. the uv–vis spectrum displayed a characteristic peak at 532 nm that is very specific for gold nanoparticles. the xrd spectrum confirmed ...

Gibb and O’Leary (2014) provided a timely review of the health effects of mercury in artisanal and small-scale gold mining (ASGM), calling for immediate implementation of the recently signed Minamata Convention on Mercury. They noted that Article 7 of the Convention [United Nations Environment Programme (UNEP) 2013] requires national action plans that include a public health strategy on mercury...

In artisanal gold mining practiced in North Sulawesi Island, Indonesia, gold is separated from ore by the use of mercury, which forms an amalgam with gold. All related processes are undertaken with a low level of technical knowledge and skills, no regulation, and with disregard for the safety of human and environment health. The situation is generating serious potential health and environmental...

The severe drought of 1983–1984 in the Sahel region, and its socio-economic impacts for people relying on farming had consequence first major gold rush at Koma Bangou southwestern part Niger. Initiated 1984, panning activities were interrupted from 1989 to 1999 with exploration permits assigned mining industry. site was reclassified year-end as a artisanal resumed until present-day. Gold such o...