South Africa, gold mines continue poisoning communities
Radioactive dumps in communities. Johannesburg and surrounding communities' main concern are mine mountain dumps, made up of crushed, sand-like refuse materials known as tailings produced during the mining process, a complex mixture of metals and dust particles. Read more: The Kabwe lead mine, closed over 20 years ago, is poisoning thousands of …
Benoni Gold
to Benoni Gold Mining Company Our core business is surface mining in order to extract our own raw ... milling and chemical processes to separate gold from raw materials. Suppliers of unselected dump rock and selected dump rock. We …
An Evaluation of the Efficiency of Commodas Optical Sorting …
The operation of a South African gold mining company treating a waste rock dumps with gold content varying between 0.2 to 0.9 g/t with the Commodas optical sorter to minimize the …
Mine Waste Solutions | South Africa | Retreatment | Harmony
The operation was acquired from AngloGold Ashanti Limited in October 2020. Harmony subsidiary, Chemwes, the owner of Mine Waste Solutions, has a contract with Franco-Nevada Barbados in terms of which Franco-Nevada is entitled to receive 25% of all the gold produced through Mine Waste Solutions.
Joburg's old gold mine dumps must be mined
With the gold price as high as it is, the gold in Johannesburg's old mine dumps should be recovered and the valuable land beneath those dumps freed up for redevelopment. The know-how of turning ...
New gold rush flattens Johannesburg's famous mining dumps
Hundreds of massive dumps of "tailings," the waste product left from more than a century of gold mining, dot the area in and around South Africa's largest city.
Exploring An Alternative Approach To Mine Waste …
rock and tailings (Bellenfant et al. 2013). In 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
West Gore Overview
These exploration licenses cover the southern portion of the past-producing West Gore Sb-Au mine, which operated in the late 1920's primarily for the extraction of antimony (stibnite) ore. Activity on the site left behind waste rock dumps. …
This researcher found billions in 'invisible' gold in …
A mine dump of fine sand, the residue of crushed rock from deep mining, is eroded by the elements in Johannesburg, South Africa [Christopher Furlong/Getty Images] An old boot discarded at a mine ...
Office of Wastewater Management
Gold Mining: 540,661,000: Copper Mining: 731,065,000: Potash: 197,000: Mine Water Definition ... Constructing and designing waste rock piles and/or dumps involves four major activities: Material Characterization: Constant and accurate characterization of the mine and waste rock can help identify rock with high acid generation ...
Restoration of Mine-Site Waste-Rock Dumps | SpringerLink
To restore landscapes from waste-rock dumps, RPs face many challenges. They can successfully meet these challenges by applying our five-step adaptive procedure and by …
Waste rock dumps
1 | Guidelines – Waste Rock Dumps Government of Western Australia Department of Mines, Industry Regulation and Safety Version 2.1 August 2021 GUIDELINES Waste rock dumps Waste rock dumps are usually the most visually obvious landforms left after open pit mining. Together with tailings storage facilities, they are also the most prone to erosion.
Repurposing Residues in Artisanal and Small-Scale Gold …
Gold mining, like all other forms of mining, is strongly associated with the production of a wide range of resi-dues, whether this concerns (toxic) waste materials or the environments …
Modeling acid mine drainage in waste rock dumps
The South Dump of the Doyon Mine located in Quebec, Canada, provides a rare opportunity to study the long-term evolution of waste rock permeability.
Water Pollution and Contamination from Gold Mines: Acid …
Mining of metals such as gold, silver and copper results in the exposure to water and air of rock ore containing sulphides. This leads to the formation of several harmful …
Mine rock dumps | Soil Mechanics and Foundation Engineering …
As might be expected, all the above-mentioned measures result in increased construction costs. However, if it is taken into account that the mean height of a rock dump is 60 m, that it has a sanitary zone of 100–120 ha, and that the cost of 1 ha of land, for Donetsk for instance, is 83,000 rubles, then the use of "worthless" land for building projects (in Donetsk there are 130 rock …
mine dumps – Finding Gold in Colorado
When exploring old mining districts across Colorado, prospectors may run into hard rock mines with ore dumps nearby. These large piles of brocken rock from …
Red Dome
Mine Name: Red Dome. State: Queensland. Status: Historic. Mineral/s: Gold, Copper. Brief description of impact/history: The former Red Dome mine is in the Mungana area, about 30 km west of Chillagoe. The site operated from about 1986 to 1997, producing about 1 million ounces of gold, 35,000 tonnes of copper from about 15 million tonnes of ore.
The Microbiology of Metal Mine Waste: Bioremediation …
1. Introduction. Mine wastes are the unwanted by‐products left behind after the ores of economic interest have been extracted, and can be solid, liquid or gaseous (Lottermoser, 2010).Mining has occurred for thousands of years, and almost every country has a legacy of mine waste that contains toxic materials including various metals and metalloids …
Legacy Gold Mine Sites & Dumps in the Witwatersrand: …
Legacy mine shafts and waste dumps in the Witwatersrand continue to create social and environmental challenges for communities, even in areas where gold mining ceased over 100 …
Where have all the mine dumps gone? | The Heritage Portal
The Reef is sent to a metallurgical plant and the Waste is sent straight to the rock dump. In the processing of Reef the gold is extracted and goes to form bullion (gold bars), whereas the residue has to be disposed of, hence the dumps. The early methods of gold extraction would send the tailings (discard) to sand dumps, but as time went by ...
Investigation into the slimes dams
Goodhope informal settlement is surrounded by railway lines, roads and mine dumps. The mining dumps are the end results of Witwatersrand Gold Mine Company (WGMC). Figure 2 shows the location of mine dumps and buffer zones in Goodhope. The distance amongst them is less than a kilometer. Figure 3 shows the status quo of Goodhope and Reiger Park.
AfriSam (South Africa) Properties (Pty) Ltd: Dump …
The rock dumps were purchased by AfriSam from various gold mining companies and title is held via a combination of commercial agreements, Section 161 Dump Permits, Surface Right Permits ("SRPs"), ... across the original waste rock dump footprint. The mining right for this dump expires on 9 August 2021. This dump is not currently mined.
Products of oxidative dissolution on waste rock dumps at …
In the active waste rock dumps only small amounts of anglesite, Fe-oxyhydroxides and Fe-sulphate are found, whereas in the abandoned waste rock dumps two main groups of weathering minerals are identified, namely: a Pb-Cu group that comprises beaverite, brochantite and subordinate quantities of amorphous Fe-sulphoarsenates and a Zn-Fe group ...
Viability of optical sorting of gold waste rock dumps
0.2 to 0.9 g/t. Some mines even send the entire waste rock dump to the plant to make sure that all the gold gets recovered. This is typically done at Anglo Gold Ashanti's Vaal Reefs operations and Goldfield's Driefontein Mine. A number of mines have tried hand picking of gold ore, for example, at Buffelsfontein Gold Mine and also at Kloof ...
Alkalinity Producing Covers for Minimisation of Acid Mine …
Proceedings of the Eighth Australian Workshop on Acid and Metalliferous Drainage (Eds H Miller and L Preuss) pp.253-262 ALKALINITY PRODUCING COVERS FOR MINIMISATION OF ACID MINE DRAINAGE GENERATION IN WASTE ROCK DUMPS W. OldsA, P. WeberA, and M. PizeyB AO'Kane Consultants (NZ) Ltd., PO Box 8257, Christchurch 8440, New Zealand …
How mine dumps in South Africa affect the health of …
In South Africa, mining of gold, coal and other natural resources has played a significant role in the country's economy, with both positive and negative consequences. ... The mine dumps were ...
Retreatment of Residues and Waste Rock
Residues contained in sand dumps and in slimes dams consist essentially of three different products, namely separate sand and slime and slime from the all-sliming process. In the early …
Valorisation of mine waste
For example, in various Witwatersrand gold mines, large gold and uranium deposits in defunct tailings storage facilities and rock dumps have been left exposed at the …
Mine Dumps in South Africa: an Ownership Dilemma
The South African landscape is filled with mine dumps bearing testament to South Africa's rich mining heritage. In laymen's terms the phrase 'mine dump' refers to an area where excess material ...