Tailings - Wikipedia

Research at the Porgera Gold Mine is focusing on developing a method of combining tailings products with coarse waste rock and waste muds to create a product that can be stored on the surface in generic-looking waste dumps or stockpiles. This would allow the current use of rivering disposal to cease. Considerable work...

From Tailings to Treasure? Miners Make Money Reprocessing ...

May 7, 2015 ... DRD Gold, one of the first South African companies to abandon traditional mining to focus on extracting gold from tailings. New technology allows it to recover up to 40% of the gold left in particle form in tailings. DRD Gold extracted 33,600 ounces of gold, worth nearly US$40 million, in the last quarter of...

Gold Tailings: Hazards and Opportunities | Investing News Network

Oct 4, 2015 ... This article was first published on Gold Investing News on August 2, 2011. Tailings from gold mining operations can pose a threat to the environment and health of nearby communities. Not only can this waste be harmful if it leaches into groundwater, but it can also mean losing minerals still contained in the...

Waste rock and tailings – Waihi Gold

The mining process generates two byproducts: Waste Rock: rock that is non-mineralised, or mineralised rock which contains insufficient gold to process economically; Tailings: the slurry that remains once the gold and silver have been extracted from the crushed ore at the processing plant...

Tailings storage facilities – Waihi Gold

A typical cross section through a tailing storage facility. 1.Natural ground 2.Ponded water 3.Tailings beach 4.Embankment crest 5.Zoned Waste Rock Embankment structure 6.Consolidated tailings. The principal features of the tailings storage facilities: the embankment structures are engineered and constructed from mine...

Mine Tailings - Ground Truth Trekking

Dec 15, 2010 ... Toxic chemicals used to extract the valuable materials from the ore, such as the cyanide used in gold mining, remain in the tailings at the end of the process, and may leach out into ground water. Rock may naturally contain dangerous chemicals, such as arsenic and mercury, which leach into water much...

Historic Gold Mine Tailings | Contaminated Sites | Nova Scotia ...

Gold mine tailings are the by-product of a mining process used in the 1800s and early 1900s in Nova Scotia and many other areas. The tailings contain arsenic and mercury. They are generally in remote locations. Some are located near people. Most Nova Scotians are probably never exposed to tailings. People who live...

Historic Gold Mine Tailings - Government of Nova Scotia

What are gold mine tailings? Tailings are a by-product of a gold mining process that was common in the late 1800s and early 1900s. Gold-bearing rocks that also contain arsenic were crushed and spread over liquid mercury to remove the gold. The mercury was then evaporated, leaving the gold. The remaining sand-like...

Tailings Dams: Where Mining Waste is Stored Forever | Alaska Gold ...

Jul 30, 2012 ... Now imagine that pit filled with up to 10 billion tons of tailings — waste that's derived from mining — that will remain there forever. It's a reality that isn't exactly far-fetched. If a large — and controversial — copper mine is built in Alaska's Bristol Bay, what remains will become a lasting part of the landscape.

Gold Mining an Old Tailings Pile with a High Banker | MINING.com ...

Since the dredging season has frozen us out; we decided to give the tailings pile a dig. We setup high bankers, and started to shovel. Worked for about an h.

Gold Mining and Submarine Tailings Disposal: Review and Case ...

The case study of the Newmont Minahasa Raya gold mine in Indonesia highlights some of the dangers of gold mine STD. Local villagers observed fish kills shortly after the beginning of STD operations, and they also noted fine red sediment resembling the tailings smothering corals on reefs adjacent to the tailings disposal...

Ask the Experts - Old workings & tailings: What are my options ...

Feb 26, 2012 ... Q: I am looking to do some gold mining in California. It's a 2,000-acre property that was mined 100 years ago, still has the old workings, tailings, etc. I am looking to recover gold from the old waste/tailings... plus possibly strip mine some of it. What are my options?? This would be a small operation.

Finding Gold in Tailing Piles - ICMJ's Prospecting and Mining Journal

There are many reasons why gold is lost in mining operations, only to end up back in the ground where it still waits to be found. Many old-time and even more modern miners lost a remarkable amount of gold. While this was not good for them, it is perhaps fortunate for those of us today who search for and find gold in old...

Recovery of gold from the Mouteh Gold Mine tailings dam (PDF ...

Feb 4, 2016 ... Full-text (PDF) | It is estimated that the tailings dam of the Mouteh Gold Mine, in Iran, contains more than 770 kg of gold. Microscopic analysis reveals that sulphide minerals and active carbon are the main sources of the gold in the tailings residue. Flotation and cyanidation tests on the sample...

Major tailings dam spill at Solomon Islands 'disaster' gold mine - SBS

Jul 21, 2016 ... Tens of millions of litres of water has escaped from a toxic gold mine tailings dam in the Solomon Islands declared a 'disaster zone' by the government last...

Tailings Ponds Are the Biggest Environmental Disaster You've ... - Vice

Aug 8, 2014 ... The waste came from a “tailings pond,” an open-air pit that mines use to store the leftovers of mining things like gold, copper, and, perhaps most notably in Canada, the tar sands—the oil-laden bitumen composites that have made the Keystone XL Pipeline so controversial. The term “pond” can be a little...

Phytomining for Artisanal Gold Mine Tailings Management - MDPI

Aug 15, 2016 ... Mine tailings are generally disposed of by artisanal and small scale gold miners in poorly constructed containment areas and this leads to environmental risk. Gold phytomining could be a possible option for tailings management at artisanal and small-scale gold mining (ASGM) locations where plants...

Speciation of Mercury and Mode of Transport from Placer Gold Mine ...

Historic placer gold mining in the Clear Creek tributary to the Sacramento River (Redding, CA) has highly impacted the hydrology and ecology of an important salmonid spawning stream. Restoration of the watershed utilized dredge tailings contaminated with mercury (Hg) introduced during gold mining, posing the...

Reprocessing of Gold & Silver Mining Tailings with Ellicott Dredges

Sep 11, 2014 ... Historically, poor recovery rates in mining have left significant amounts of recoverable material in tailings. This material can be extracted with dredges.

Dawson City, where the roads could be made with gold mine tailings ...

Nov 8, 2017 ... Anybody who's been to Dawson City, Yukon, has likely seen them — large piles of placer mining waste rock, lining the Klondike Highway and the back roads near town. Now the Yukon government wants to use some of those tailings as a substitute for gravel, in things such as airport and highway...

Las Lagunas Gold Tailings Project - Mining Technology

Las Lagunas Gold Tailings is a retreatment project involving the reprocessing of previously unrecovered gold and silver refractory tailings from the Pueblo Viejo mine. The project is situated 100km north-west of Santo Domingo, the capital city of Dominican Republic, in the Caribbean. The project is 100% owned and...

Itronics Begins Tests to Recover Silver and Gold From Leached ...

Aug 8, 2017 ... ... has entered into a strategic partnership with a Nevada based silver-gold mining company to test Itronics' KAM-Thio technology on silver-gold heap leach tailings and on Xinhai silver-gold ore from a silver-gold deposit the mining company is developing for production. The initial testing has three objectives.

Mining Operations - OceanaGold - Haile Gold Mine

Ore/Gold Processing Facility: The facility where ore is crushed, concentrated and from which gold is extracted to be smelted into doré bars (a semi-pure alloy of gold that is then refined further). The Tailings Storage Facility (TSF): A facility for long-term storage of tailings, the by-product of ore processing. The Tailings Storage...

Ecological and human health risks associated with abandoned gold ...

Feb 21, 2017 ... Gold mining is a major source of metal and metalloid emissions into the environment. Studies were carried out in Krugersdorp, South Africa, to evaluate the ecological and human health risks associated with exposure to metals and metalloids in mine tailings contaminated soils. Concentrations of arsenic...

Mine Tailings, Tailings in Mining, Gold Tailings Reprocessing ...

Xinhai tailings re-processing line, with the thought of protecting ecosystem, provide a reprocessing for tailings of iron, gold, lead-zinc, copper, fluorite.

Rare Earth Elements From Old Mine Tailings - ABC News

Jul 24, 2013 ... Prospectors say they have discovered a modern mother lode—not one buried deep within the earth, but sitting on the surface: the tailings of old mines, some dating back to California Gold Rush days. What these contain, though, isn't gold or silver. It's rare earth elements. Rare earth elements were...

Characterisation of cyanide in gold-mine tailings of the Witwatersrand

Characterisation of cyanide in gold-mine tailings of the Witwatersrand. Elysee B. Nsimba a), Hlanganani Tutua),, Ewa M. Cukrowska a) Isabel M. Weiersbyeb) a)School of Chemistry and b)School of Animal, Plant and Environmental Sciences. University of the Witwatersrand, P. Bag X3, WITS 2050, South Africa.

Mining Weekly - Gold tailings retreatment an attractive proposition in ...

Oct 14, 2016 ... The strong performance of the rand gold price, increasingly lower ore grades mined in deeper underground mining operations and higher labour and electricity costs are underscoring the attractiveness of, and accelerating, gold tailings retreatment operations in South Africa, states gold miner Sibanye's...

Mineralogy and geochemistry of tailings from a gold mine in ...

Jan 3, 2017 ... Mineralogical and geochemical characteristics of tailings from a gold mine in northeastern Thailand were investigated in relation to acid mine drainage (AMD) and the release potentials of toxic elements. The tailings can be divided into upper tailings and lower tailings. The upper tailings usually contain...

Mining: Bacteria with Midas touch for efficient gold processing ...

Apr 28, 2017 ... Special 'nugget-producing' bacteria may hold the key to more efficient processing of gold ore, mine tailings and recycled electronics, as well as aid in exploration for new deposits, research has shown.

Mining: Bacteria with Midas touch for efficient gold processing ...

Apr 28, 2017 ... Special 'nugget-producing' bacteria may hold the key to more efficient processing of gold ore, mine tailings and recycled electronics, as well as aid in exploration for new deposits, research has shown.

Aerobic anoxygenic phototrophs in gold mine tailings in Nopiming ...

Feb 14, 2017 ... Aerobic anoxygenic phototrophs in gold mine tailings in Nopiming Provincial Park, Manitoba, Canada. Elizabeth Hughes, Breanne Head, Chris Maltman, Michele Piercey-Normore, Vladimir Yurkov. aDepartment of Microbiology, University of Manitoba, Winnipeg, MB R3T 2N2, Canada. bDepartment of...

Work begins to drain tailings dam at Gold Ridge mine in Solomon ...

Apr 1, 2016 ... The process to empty the tailings dam at a closed gold mine in Solomon Islands begins after a long wait.

Merritt Mill and Tailings Facility | Nicola Mining Inc.

The mill was constructed in the fall of 2012 together with the fully lined tailings facility. The Mill has extensively been upgraded and modified including installation of a gravity jig separation system that allows the Mill to separate free gold from mill feed, as well as a tabling system that allows the Mill to further separate fine...

Phytoremediation of Gold Mine Tailings Amended with Iron-Coated ...

Apr 11, 2016 ... This study was undertaken to determine the effects of rice husk ash (RHA) and iron-coated rice husk ash (Fe-RHA) on phytoavailability of As, Cd, Cr, Cu, Mn, Pb, and Zn to vetiver grass grown in gold mine tailings amended with either RHA or Fe-RHA at 0%, 5%, 10%, and 20% (w/w). The results showed...

Arsenic mine tailings and health - Better Health Channel

Oct 30, 2015 ... It is often found near gold deposits and is extracted as part of gold and other mining activities. The waste left over after mining processes is called mine tailings. Mine tailings often look like fine clay or sand and commonly contain raised levels of arsenic. Many towns and cities in Victoria have been built in...

Porgera Gold Mine - Riverine Tailings and Waste Rock Management

The Porgera Gold Mine. 1. The Planning and Development of the Porgera Gold Mine. 1. Setting. 1. Planning and Alternatives. 1. The Outcome. 3. The CSIRO Independent Review 1996. 3. Follow Up to the CSIRO Report. 4. Downriver Monitoring. 4. Monitoring Indicators and Results. 4. Mercury from Small-scale Mining. 6.

How are waste materials managed at mine sites | MiningFacts.org

Waste rock is often stored in heaps or dumps on the mine site, but may be stored underwater with tailings if it contains a lot of sulphide minerals and has a high .... Myra Falls Mine is a zinc, copper, lead, gold, and silver mine located at the south end of Butte Lake in the Strathcona-Westmin Provincial Park, 80 kilometers...

Consequences of Historical Mining - Gold a Nova Scotia Treasures

Toxic Tailings. Historical gold mining often profoundly impacted the surrounding ecosystem, leaving behind a toxic legacy. People were not always aware of the impact of specific mining practices on the environment or human health. Mines created waste rock piles and tailings. Waste rock included all of the rock removed in...

The viability of using the Witwatersrand gold mine tailings for ...

STUDENT EDITION. The viability of using the Witwatersrand gold mine tailings for brickmaking. M. Malatse; S. Ndlovu. School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa. SYNOPSIS. The Witwatersrand Basin is the heart of South Africa'a gold mining industry.

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