Lihir Gold Mine, Lihir Island, Papua New Guinea
The Lihir gold mine is located on Niolam Island, Papua New Guinea (PNG), approximately 900km north-east of Port Moresby. The gold mine was managed by a subsidiary of Rio Tinto until late 2005, and the operatorship was then handed over to Lihir Gold. Australian miner Newcrest Mining acquired Lihir Gold in a $9bn deal in 2010.
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 ...
Mining company pays millions for gold dug from mine dumps
The former open pit mine has a large gold processing plant. In a good year, Voigt might move 200 to 500 ounces of gold in 3,000 to 5,000 tons of ore to Golden Sunlight. The work can vary.
Tailings Retreatment
Tailings retreatment represents the greatest contribution to recycling by Pan African. By reprocessing waste rock and tailings to extract gold left behind during the initial mining …
Hazards identified and the need for health risk …
Although mining is a cornerstone of the South African economy (), it generates copious amounts of dust. 1 The dusts may be toxic since they may also be contaminated with various toxic metals.For this …
Treasure from trash: how mining waste can be mined a …
Tailings dumps can be gold mines – literally, in some cases. ... This process was initially developed to release gold from pyritic rocks, and is regarded as a greener processing technique.
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 ...
Legacy Gold Mine Sites & Dumps in the Witwatersrand …
During the gold mining, underground tunnels were created to extract ore and crushed rock waste, with gold processing residues being deposited at ground level, which led to the formation of substantial mine dumps and tailing dams in Johannesburg. These underground tunnels, dumps and tailings cover a large footprint.
Respiratory Health in a Community Living in Close Proximity to Gold
The effects on respiratory health in populations living close to silica-rich gold mine dumps are unknown. This pilot study related respiratory health and exposure to mine dump dust using two measures of exposure: exposure group, based on distance lived from the mine dump—high (n = 93) (home <500 m from a mine dump), moderate (n = 133) …
(PDF) Old mine dumps recovery: An …
PDF | On Jul 18, 2017, V Dentoni and others published Old mine dumps recovery: An environmental and techno-economical challenge | Find, read and cite all the research you need on ResearchGate
Tailings dump recovery concept | PDF
Key points: - The business will acquire gold mine tailings dumps, test samples to determine assay and recoverability, then place processing equipment on approved dumps to recover gold. - Products are gold recovery operations on mine dumps in Zimbabwe and other gold-rich African areas where competition is currently limited.
Mine dumps in South Africa cause ownership dilemma
Commercial law firm Cliffe Dekker Hofmeyr director Jackwell Feris has welcomed the further proposed amendments to the Mineral and Petroleum Resources Development Act (MPRDA), relating to historic ...
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 …
An underexploited invisible gold resource in the Archean …
The tailings dumps originating from gold mining in South Africa's Witwatersrand still contain notable gold endowments. Most tailings reprocessing …
A practical guide to re-treatment of gold processing residues
Advances in processing technology, together with a degree of gold release through ageing of the ore over many years, often provide gold recovery in the range 50–60% (headgrade around 0.4–0.5 g/t), which is sufficient to cover the low processing costs and make a positive contribution to the profitability of an operation.
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 …
Investigation of Sterile Mining Dumps Resulting from Ore …
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 …
A review on the impact of mining operation: Monitoring, …
Considering that practices of mining and mineral processing usually generate extensive amounts of solid and liquid waste, mobilised metals could directly come from open mine tailings or mine dumps [48]. Furthermore, non-vegetated surface-mined lands shelter substantial zones in different parts of the world.
DRDGOLD'S Ergo cleans up: sustaining reclamation, …
Details Published: Thursday, 05 August 2021 07:55 Johannesburg, South Africa. 5 August 2021 DRDGOLD Limited (DRDGOLD, JSE, NYSE: DRD) subsidiary Ergo Mining (Pty) Limited has begun reclamation – at a R3.8 million set-up cost – of the 2.7Mt 4L25 mine dump. The reclamation of this dump is integral to sustaining production at Ergo and …
Tailings Retreatment
By reprocessing waste rock and tailings to extract gold left behind during the initial mining process, we effectively reduce our environmental footprint while rehabilitating our tailings dams. Tailings are processed at Pan African's two state-of-the-art tailings treatment plants, at Elikhulu and BTRP, which processed 13,093,574 t and 958,106 ...
Retreatment of gold residues
Since the cost of mining and size reduction (partial in the case of sand) has already been incurred, these residue materials normally constitute a 'cheap' source of gold, especially when exploited as a tonnage make up to fill excess treatment capacity within an existing processing facility.
Hazards identified and the need for health risk assessment …
Mining and processing of minerals also result in occupational exposure to toxic substances such as platinum, chromium, vanadium, manganese, mercury, cyanide and diesel particulate.
Mining mine dumps in South Africa: the interests …
The prevalence of mine dumps across the landscape in many parts of the country is a reminder that the mining industry is an integral part of the South African economy. Mine dumps are not merely …
Socio-Environmental Risks Linked with Mine Tailings …
1.1. What Are Mine Tailings? An Initial Scope in an Uncertainty and Complex World. The initial step in mineral processing involves crushing and grinding ore to produce a suitable particle size for further metallurgical processing using physical and chemical separation methods [].Physical separation processes take advantage of the …
Feasibility of tailings retreatment to unlock value and …
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 …
Ecologies of Gold: Mining Landscapes of …
Over one thousand kilometers of pipeline connect the historic mine dumps, gold processing plants and new super dumps in a vast network that covers the region. Under 45 bars of pressure, the pipe network delivers …
Ecological and human health risks associated with abandoned gold mine …
Soil samples were collected within a 20 m radius of abandoned Au mine tailings dumps in three different areas in Krugersdorp located at 26° 7' 56" S and 27° 48' 13"E (Site 1), 26° 8' 34"S and 27° 48' 28"E (Site 2), and 26° 7' 40" S and 27° 48' 57"E (Site 3) (Fig 2). Gold mining in these sites had ceased more than a decade ago.
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 …
PROCESSING OF GOLD-BEARING SAND DUMPS: A …
Sardinia 2017 / Sixteenth International Waste Management and Landfill Symposium / 2 - 6 October 2017 M3 -300 +150 M4 -150 +75 M5 -75 to pan
Requirements for mine dumps & stockpiles
Until recently, mining waste was regulated under the Mineral and Petroleum Resources Development Act 28 of 2002 (MPRDA). With effect from 24 July 2015, the establishment and reclamation of mine dumps and stockpiles of similar waste from or incidental to a mining operation, must comply with the new regulations regarding the planning and …