Dust Deposition Impacts at a Liquidated Gold Mine Village: …
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 ].
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Chemical sterilisation and vetiver grass performance on gold tailings
Study area characteristics. The study was conducted at Muriel gold mine tailings dumps located (17° 14′ 28″ S; 30° 35′ 57″ E) on Kenmore Farm Extension, 100 km North-West of Harare, Zimbabwe (Fig. 1).Muriel Mine experiences a tropical climate with clearly defined wet and dry seasons; annual rainfall ranges between 750 and 900 mm …
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Regulation and remediation of the impacts of mine wastes on …
South Africa has been a mining country for more than a century.1 During this time mine wastes have become a major cause of pollution.2 For many decades, large volumes of waste materials – genera... Regulation and remediation of the impacts of mine wastes on land and water in South Africa: Journal of Energy & Natural Resources …
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Success of tailings retreatment stands out in lacklustre …
The group increased its gold production by 54.2% to 81 014 oz on the back of robust performances from the Barberton Mines' underground operations, the Barberton tailings retreatment plant and ...
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Mine site rehabilitation — are we reinventing the wrong wheel?
issues. The history of South Africa's mine site rehabilitation from 1910 to 1991 is a good exemplar of the theme of this paper, in that there has been an ongoing focus on a topsoil …
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As gold demand rises, South Africa has opportunity to recover …
Font size: - +. JOHANNESBURG (miningweekly) – With demand for gold currently off the charts, South Africa has a huge opportunity to recover gold from its …
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Exploring An Alternative Approach To Mine Waste …
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 toxic
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Success of tailings retreatment stands out in lacklustre gold sector
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 ...
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Toxic Heavy Metals in Soil and Plants from a Gold Mining Area, South Africa
The mining of mineral deposits abundant in South Africa has led to the release of toxic heavy metals into the environment. The aim of this study was to investigate heavy metal pollution from a gold mining area. The concentrations of arsenic, cadmium, lead, and zinc were analyzed in soil and plants found within 500 m and 1000 m radius of …
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Hazards identified and the need for health risk assessment in the …
South Africa has many decommissioned mines and large mine tailings dumps and dams. It has been estimated that there are more than 270 tailings dams related to gold mining alone, covering a total area of about 180 km 2 . 90 Most of the tailings dams and dumps are located close to human dwellings and agricultural land. 91 When mining …
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Feasibility of tailings retreatment to unlock value and create …
This study explores the possibility of reclaiming the tailings dump of the Louis Moore Mine in the Giyani Greenstone Belt, investigates potential hazards to communities in the …
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Evaluation of Trace Elemental Levels as Pollution
In the Blesbokspruit area of Ekuhurleni, South Africa, previous gold mining activities resulted in many tailings dump sites. 20 representative soil samples were used in describing the distribution of metals. The soils were very strongly acidic ranging from 3.86 to 4.34 with a low cation exchange capacity (CEC). Based on X-ray fluorescence (XRF) …
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(PDF) Gold Mine Tailings: A Potential Source of Silica
A representative sample of gold mine wastes of sandy grain size was used in making the glass. Based on composition, the glass was formulated by adding an average 10.0 mass% of CaCO3 and 5.0 mass ...
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DRDGold: South Africa's largest tailings project kicks into first gear
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.
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CHAPTER 5 GOLD MINE TAILINGS AS A SOURCE OF …
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.
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(PDF) Dust Deposition Impacts at a Liquidated Gold Mine Village
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.
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Acid mine drainage arising from gold mining activity in …
The Witwatersrand region of South Africa is famous for its gold production and a major conurbation, centred on Johannesburg, has developed as a result of mining activity. A study was undertaken of surface and ground water in a drainage system in this area. ... (FeS 2) contained within mine tailings dumps, and has elevated concentrations …
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Decommissioning Projects
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 ...
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Tailings management | Sibanye-Stillwater
John resides in South Africa. Mr Danie Brink: Danie is an independent specialist tailings consultant. He has 37 years' experience in the field of mining and industrial waste management, with a particular focus on the design and surveillance of tailings storage facilities and the closure design of waste and tailings facilities.
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Mine site rehabilitation — are we reinventing the wrong wheel?
issues. The history of South Africa's mine site rehabilitation from 1910 to 1991 is a good exemplar of the theme of this paper, in that there has been an ongoing focus on a topsoil and grass cover over gold tailings dumps despite this solution continually failing, as described in the following summary of the findings of
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grazing in gold mine tailings dumps in sa
2014 0183 32 New gold rush flattens Johannesburg s famous mining 2005a) and cyanidation of the flotationconcentrate indium ... · grazing in gold mine tailings dumps in sa - elefantino.ch. Aug 23 reprocessing to recover economic value … · A representative sample of gold mine wastes of sandy grain size was used in making the glass.
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Uncovering South Africa's R450bn hidden gold mine
Uncovering South Africa's R450bn hidden gold mine. Stellenbosch geometallurgist Steve Chingwaru believes there's 420t of 'invisible gold' in tailings dumps on the Witwatersrand. If so, it ...
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Converting Tailings Dumps into Mineral Resources
Extraction of valuable metals from tailings dumps (or residues or low grade stockpiles) traditionally regarded as waste, has long been researched by metallurgists. A …
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(PDF) Valorisation of mine waste -Part I: Characteristics of, and
tailings from the Witwatersrand gold mines, where the earliest mine tailings contain suf ciently high gold grades and have already been used for secondary extraction (e.g., Fleming et al., 2010 ...
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Dust Deposition Impacts at a Liquidated Gold Mine Village: Gauteng
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 ].
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An underexploited invisible gold resource in the Archean
Abstract. The tailings dumps originating from gold mining in South Africa's Witwatersrand still contain notable gold endowments. Most tailings …
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Decommissioning Projects
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 …
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Heavy Metal Pollution from Gold Mines: Environmental Effects …
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 .
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ARTICLE
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).
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