Re-Processing Gold Tailings in South Africa
ABSTRACT. The technical and economic feasibility or re-processing hundreds of millions of tons of tailings in a number of historic gold tailings dams in the Witwatersrand area of South Africa is being investigated. The objective is to recover uranium and residual gold from the tailings, as well as to oxidize the sulphides to eliminate long term ...
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Where have all the mine dumps gone? | The Heritage Portal
Now not all dumps are the same as during the mining and processing of gold there are two streams – Reef (gold bearing ore) and Waste (non-gold bearing from …
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From Tailings to Treasure? A New Mother Lode
Mintails, a mine tailings processor, has developed new technology to process 350,000 tons of slimes from its extensive tailings resources. It expects to recover 58 kg of gold per month, and has enough slimes to last until 2025. Goldfields has also developed new technology for a tailings retreatment plant, and processes 12,000 tons of current ...
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PROCESSING OF GOLD-BEARING SAND DUMPS: …
In this article, we investigate the possibility of reprocessing gold bearing gold dumps for gold as a sustainable way of reviving the …
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Secondary Gold Recovery & Reclamation of Historic Mine …
•Processing, shipping and removing legacy dump material has in some cases resolved issues with historic mine dumps •Example is the "Hard Cash" project which had a dump eroding into Keating Gulch, removal of that dump saved an estimated $800,000 in …
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DRAFT SCOPING REPORT FOR THE APPLICATION OF A …
draft scoping report for the application of a mining right and waste management license for the proposed mining and processing of gold mine dumps on portion 1 of farm modderfontein 76 ir in the magisterial district of benoni, ekurhuleni metropolitan municipality, gauteng province v | p a g e objective of the scoping process
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Feasibility of tailings retreatment to unlock value and create …
tailings dump near Giyani, South Africa N.K. Singo1 and J.D. Kramers1 Synopsis The reprocessing of tailings resources to extract gold on an industrial scale has become common practice. While these projects are common in the Witwatersrand basin, similar low-technology processes are not operational in smaller goldfields.
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Zimbabwean mine dumps and their impacts on river water quality …
The parameters considered on choosing the representative mines include geographic setting, geological setting, host rock-type, processing method, ore type and commodities being mined. The dumps visited were divided into six dump types, namely: gold-mine dumps, base-metal mine dumps (dumps associated with the mining of. …
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The impact of gold mining on the Witwatersrand on the rivers and …
Carbon-in-leach or carbon-in-pulp plants were erected by East Rand Gold Operations, Anglo American and Crown Gold Recoveries for the processing of old mine dumps. The process involves liquidising the sand or slimes, then the pumping of the resulting slurry to the plant for the extraction of the gold.
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The Diagenetic Alterations of Historic Skeletons from the Crown Mines
Human skeletons associated with early gold mining in Johannesburg, South Africa are investigated. An unmarked cemetery was buried beneath a mine dump which resulted in macroscopically stained and poorly preserved bones. Histological assessments were conducted to understand the postmortem treatment of the remains, determine the …
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THE UNREGULATED TERRAIN OF HISTORIC MINE DUMPS …
For more information, please contact Patrick Leyden and Aobakwe Mametse or your usual Herbert Smith Freehills contact: Patrick Leyden. Director, Johannesburg. +27 10 500 2625. Aobakwe Mametse. Trainee, Johannesburg. +27 10 500 2641. Dumps, Mine Dump, Mineral Resources, Mining, MPRDA. 1.
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Respiratory Health in a Community Living in Close Proximity to Gold
1. Introduction. 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 …
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Ecological and human health risks associated with abandoned gold mine
Gold (Au) mining as a source of heavy metal contamination in soils has been documented in several countries including Korea, USA, Sultanate of Oman, Ghana, Canada and South Africa . Processing of ore bodies and disposal of mine tailings and wastewater rich in heavy metals and metalloids are the main origins of metal and …
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South Africa's gold mine crisis
The Chamber of Mines, which represents the mining houses, says a widespread strike in the gold mines would mean a loss of 349m rand ($34m; £23m) for each day of lost production.
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Zimbabwean mine dumps and their impacts on river water quality …
Acid mine drainage has been shown to be associated with many mine types (Lupankwa et al., 2004a, Ravengai et al., 2005a), alkali mine drainage with chrome mining (Ashton et al., 2001, Roberts, 1996) and base metal pollution with base metal and some gold-mines (Lupankwa et al., 2004b, Musiwa et al., 2004). However there is lack of …
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A practical guide to re-treatment of gold processing residues
For the purpose of this paper, gold mining residues with a particle size of approximately 70–80% finer than 74 μm are defined as slime and residues grading 10–20% finer than 74 μm as sand. The first phase of the re-treatment process is to obtain credible information with the sampling programme (and the subsequent metallurgical testwork) a ...
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Land | Free Full-Text | Investigation of Sterile Mining Dumps
Abandoned sterile dumps can be a significant source of environmental pollution, therefore the distribution of trace elements throughout mining is vital. Monitoring environmental factors in closed mining perimeters aims to track the quality of discharged waters in the emissary and assess acid mine drainage, the quality of the soil and …
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Zimbabwean mine dumps and their impacts on river water quality …
The dumps considered in the study were divided into six dump types, namely: gold-mine dumps, base-metal mine dumps (dumps associated with the mining of …
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Mining company pays millions for gold dug from mine dumps
1:36 BUTTE — One man's trash is another man's gold. Case in point: Owen Voight and Paul Antonioli, independent miners who scratch less-than-meatball-sized …
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Environmental Impacts of Gold Mining | Brilliant Earth
The Lihir gold mine in Papua New Guinea dumps over 5 million tons of toxic waste into the Pacific Ocean each year, destroying corals and other ocean life. Companies mining for gold and other metals in total dump at least 180 million tons of toxic waste into rivers, lakes, and oceans each year—more than 1.5 times the waste that U.S. cities ...
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The current state and future directions of percolation leaching in …
1. Introduction. China is the world's largest producer of coal, gold and rare earth elements (REEs) and has more than 10,000 active mines. In addition, being the most populated country and the largest developing country, most mined resources are used by China, such as coal (50% consumption share of world production in 2014), iron ore (56% …
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Rehabilitation of Disturbed Lands with Industrial Wastewater …
Wastelands of the mining industry are among the largest of disturbed areas that demand revitalization. To reduce environmental impact and to better manage these geo-resources, the formation of sustainable plant and soil complexes and the restoration of self-recovery soil function are critical points. The successful return of vegetative cover at …
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PROJECT PROPOSAL original.docx
TAITA TAVETA UNIVERSITY FACULTY OF ENGINEERING DEPARTMENT OF MINING AND MINERAL PROCESSING ENGINEERING BSc. IN MINING AND MINERAL PROCESSING ENGINEERING EMM 2501: PROJECT PROPOSAL DESIGNING OF A TAILING EMBANKMENT TO CONTROL SEEPAGE OF GOLD MINE TAILINGS, CASE …
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What's left in the wake of South Africa's abandoned gold mines
Throughout its lifetime, the mine generated about 2.5 million pounds of gold, silver, uranium and other minerals, but now it is a volatile wasteland. Just outside the main mining village, unremediated tailings piles stretch like monstrous sandy beaches. Children are known to swim in puddles of water on the dumps.
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Telfer Project, Expansion of Telfer Gold Mine, Great Sandy …
2. The proposal. This proposal involves the recommencement and expansion of mining at the Telfer Gold Mine (see Figure 1) to include the mining and processing of 400 million tonnes of gold ore at a rate of up to 23 million tonnes per annum, and the transport of copper concentrate to Port Hedland by road.
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Converting Tailings Dumps into Mineral Resources
Similarly, tailings dumps arising from the processing of chrome ore in the Lower Group reefs of the BC are also being retreated to recover PGEs. Several commercially profitable enterprises have also been set up with the sole intention of retreating tailings dumps arising from South Africa's Witwatersrand gold processing operations.
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MINE TAILINGS FACILITIES: OVERVIEW AND INDUSTRY …
2. MINE TAILINGS AND TAILINGS FACILITIES: AN OVERVIEW Mine tailings are the waste material that remains after the economic fraction has been extracted from the mineral ore. Tailings consist of a slurry of ground rock, and water and chemical reagents that remain after processing. The composition of mine tailings varies
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The Herald
Most mining companies have embarked on projects to recover gold from dump sites due to high mining costs and low liquidity prevailing in the economy. Share This: May 29, 2014
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Sustainability | Free Full-Text | The Development of Technogenic …
The year 2024 was adopted as the year for the start of the dumps' mining. For 2024, the highest priority options are selected based on developed algorithm for priority of mining dumps' determination. Dump N9 is selected because it has the highest priority (0.19). Since then, the mining dump's development requires 6 years .
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Waste-Rock Dumps | South Africa | Retreatment | Harmony
Production from processing surface-rock dumps, situated across Harmony's Free State operations, depends entirely on the availability of spare mill capacity at the various operational plants. Waste and waste-rock dump deliveries to the Kusasalethu plant (near the border of Gauteng and North West provinces) supplement mining volumes to …
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