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Pre-feasibility study on reuse of former gold mines in South Africa for pumped storage schemes ... Study finds elevated uranium concentrations in hair of residents living near gold/uranium mill tailings dumps in South Africa: Results: Among 128 subjects with available U measurements, 63 (49%) were children (ages 7-15 years) of which 38 …Web
An assessment of radiological impacts of gold mining activities in the Wonderfonteinspruit Catchment Area (WCA) was carried out on behalf of the National Nuclear Regulator (NNR) of South Africa.Web
Gold-mining waste has been estimated as accounting for 221 million tons or 47% of all mineral waste produced in South Africa, making it the largest single source of waste and pollution . There are approximately 270 tailings storage facilities in the Witwatersrand Basin, covering 400 km 2 in surface area, which store this waste [ 6 ].Web
1. Introduction. The mining industry is an essential cornerstone of social construction and a key sector of the national economy [1,2,3].Huge social and economic benefits are created in the mining process, while it creates billions of tons of tailings waste per year [4,5,6].Massive mine tailings are generally stacked in an open tailings pond without …Web
The gross alpha and beta activity in treated water from one of the numerous gold mines in Gauteng province averaged 1.15 ± 0.13 and 0.87 ± 0.11 Bq L−1, respectively. The average readings of the fissure water from the same mine were 0.56 ± 0.10 and 0.52 ± 0.11 Bq L−1, respectively. Water samples collected at the foot of the Princess gold mine …Web
tailings included all TSFs which occur within a 10 km radius from the gold mine village. The village The village is shown within a red circle in Figure 2 and consists of ward 5 and ward 27.Web
Steve Chingwaru, a PhD-student in geometallurgy at Stellenbosch …Web
experts, using the defunct Princess gold tailings dump in Davidsonville Suburb (West of Johannesburg) as a case study. The literature review of the study has shown that there is environmental pollution (air, water and soil) due to gold tailings dumps in current and historic gold mining areas. These findings were found to beWeb
In gold mining areas, tailings dams and mine dumps are significant sources of ambient dust, known to be a nuisance, and health risk, to communities living near them and who must find appropriate ...Web
South Africa has numerous voluminous tailings dumps that will certainly require rehabilitation. The aim of this work was to develop a methodological approach for prioritization of rehabilitation ...Web
Pre-feasibility study on reuse of former gold mines in South Africa for pumped storage schemes ... Study finds elevated uranium concentrations in hair of residents living near gold/uranium mill tailings dumps in South Africa: Results: Among 128 subjects with available U measurements, 63 (49%) were children (ages 7-15 years) of which 38 were ...Web
Among those mine tailings, the heavy metal pollutants in gold mine tailings are the most complex. The pollutant patterns of gold tailings are distinct in different areas because of the specific ...Web
The technical and economic feasibility or re-processing hundreds of millions of tons of …Web
Phase 1 involves upgrading the Driefontein 2 plant to process tailings from the Driefontein 5 dump at a rate of between 400 000 and 600 000 tpm and depositing the residue on the Driefontein 4 tailings …Web
JOHANNESBURG (miningweekly) – With demand for gold currently …Web
In South Africa, mining processes from the Witwatersrand gold basin have resulted in approximately 270 tailings storage facilities, more commonly referred to as gold mine waste dumps, or colloquially, mine dumps, around Johannesburg [1,2].Gold mine waste dump dust is fine, dry, tiny particles of earth matter that have been processed and …Web
Phase 1 involves upgrading the Driefontein 2 plant to process tailings from the Driefontein 5 dump at a rate of between 400 000 and 600 000 tpm and depositing the residue on the Driefontein 4 tailings dam. First production is expected in the first quarter of 2019, adding up to 120 kg or 3 800 oz of gold a month to DRDGOLD's production profile.Web
Multiple studies have reported high concentrations of toxic metals and radioactive elements in different gold mine tailing dumps and adjacent water resources in this area (McCarthy 2011; Kamunda et al. 2016; Olobatoke and Mathuthu 2016; Ngole-Jeme and Fantke 2017) as well as in many other gold mines tailings and surrounding soils in …Web
THE INFLUENCE OF THE TAILINGS ON THE pH AND EC OF THE UNDERLYING SOILS The gold mine tailings produces acidic leachate as discussed in Chapter 2, due to the oxidation of pyrite and other sulphide minerals. The acidity and associated trace elements will leach into the underlying soils under normal soil drainage conditions.Web
Study area. Two sites in Kitwe and one in Mufulira in the Copperbelt Province of Zambia were selected for this study (Fig. 1).Study sites were Cu and Co mining waste dumpsites and abandoned ...Web
Gold mining in South Africa over the centuries has resulted in the …Web
CASE STUDY 6: Old gold tailings dump Kidston mine old gold tailings: An extremely acidic (pH 2.7, sulfate ... grazing. PC: Shu S F ... Xstrata Chromium Mine, Rustenburg, South Africa . Vetiver planted in rows 1 meter apart at intervals of 250mm. Areas betweenWeb
Gold-mining waste has been estimated as accounting for 221 million tons or 47% of all mineral waste produced in South Africa, making it the largest single source of waste and pollution . There are approximately 270 tailings storage facilities in the Witwatersrand Basin, covering 400 km 2 in surface area, which store this waste [ 6 ].Web
In gold mine tailings, a higher concentration of 583 mg/kg was found by Matshusa et al. in South Africa. Bitala et al. [ 45 ] also reported concentrations as high as 11,200 mg/kg in Tanzania. Nickel exists in gold bearing ore as pyrrhotite (Fe (1−X) S), which can contain up to 5% Ni and pentlandite (FeNi)S 8 .Web
These tailings dumps contain significant levels to rehabilitate tailings storage facilities by mining companies of arsenic, cadmium, cobalt, uranium, lead and zinc (Coetzee et infringes human and socio-economic rights. ... 'The Cost of Gold. Environmental, Health and Human Rights Consequences of Gold Mining in South Africa's West and Massey ...Web
Company Overview. DRDGOLD Limited (DRD) is a South African gold mining company best known for producing gold from reprocessing historical waste tailings. DRDGOLD is actually South Africa's oldest ...Web
Mineralogical characterizations of artisanal gold mine tailings in Miyove gold mine (Baradega and Masogwe) in Rwanda were investigated for potential utilization as a source of valuable gold, using the centrifugal separation technique. ... 50,000 in Australia, 6,000 in South Africa, and 9,500 coal mines in China, reaching 15,000 by 2050. In this ...Web
Unfortunately, the electrokinetic treatment of mine tailings was only able to remove a small fraction of the metals, so there is a risk of mobilization of the residual fraction in the future due to the slow but continuous transformation of the minerals in the mine dump, due to chemical reactions with atmospheric oxygen and biological induced ...Web
Additionally, DRDGold concluded an acquisition for gold assets associated with Sibanye-Stillwater's West Rand Tailings Retreatment Project. The assets, comprising a 2.7-million-ounce reserve and ...Web
South Africa, defunct gold tailings dumps occupy large areas of land, with more than 270 mine dumps covering an area of 400km2 having been identi˚ ed (Oelofse et al. 2010). Many of these tailings dumps are situated in close proximity to human settlements, and typically contain reactive minerals and toxicWeb
Witwatersrand in South Africa is home to the largest known gold reserves in the world, making the country one of the world leaders in gold mining (Hart 2014). However, gold mining has also resulted in the genera-tion of thousands of tailings dumps along the gold mining corridor from Nigel to Randfontein (Bobbins 2015).Web
17 Apr 2023. Johannesburg, South Africa – "This mine is a silent killer," said Tiny Dlamini at Snake Park in Soweto, pointing at Johannesburg's largest abandoned gold mine dump that looms ...Web
The gold ore from sulfide minerals is, in general, ore dressed by means of nine stages among which stand out flotation and cyanidation. The residues of these steps, containing potentially toxic elements, such as As, Cd, Cr, Mn, Zn and Pb disposed of tailings dams, which might be a source of environmental contamination if not suitably …Web
