Historical assessment of metal recovery potential from old mine …
Reprocessing implies that the tailings material is used as a feedstock for producing valuable products such as recovered minerals and metals (Edraki et al., 2014).According to Gordon (2002), mine tailings can be observed as the single largest source of copper in waste deposits in the US copper cycle and Johansson et al. (2013) categorized tailings as valuable …
Mine tailings: reprocess, recover & recycle
By reprocessing tailings, dewatering them and then storing them in a dry stack, mines can remove some of the economic, environmental and societal risks associated with …
MANAGEMENT OF TAILINGS: PAST, PRESENT AND …
most readily achieved in new mining projects and hence change in tailings management for the mining industry as a whole will be generational. For context, this chapter first describes conventional tailings management, arguing that applying NPV accounting to tailings management supports the transportation of tailings as a slurry to a facility, with
Mine Waste | U.S. Geological Survey
The two large piles are mine tailings miles near Saguaro National Park. ... Our Nation has a history of mining that is over 200 years old – and reminders of that legacy dot the landscape. ... We currently have a poor understanding, however, …
Mine Waste as a Resource | U.S. Geological Survey
Many of these mines produced tailings and other mine wastes that still exist on the landscape today. These wastes can be harmful, both to the environment and human health. However, mine wastes also often include discarded minerals that were not economically favorable or technologically feasible to recover when they were mined but may now be ...
Evaluation of a 20–40 year old gold mine tailings …
Mine Closure 2009, Perth, Australia 129 Evaluation of a 20–40 year old gold mine tailings rehabilitation project on the Witwatersrand, South Africa A.S. Rossouw et al. (Dye et al., 2008). For nutrient-cycling on Fleurhof, litter, perennial tussock grass and woody plants tended to make the largest contribution (Figure 3c). ... acid and moist ...
Digging Up the Past, Reprocessing Mine Tailings
Common methods for reprocessing mine tailings include floatation, cyanide leaching, gravity separation, magnetic separation, and heap leaching. Reprocessing tailings not only helps remove potentially hazardous pollutants …
Recovering Metals From Old Tailings Piles: Reworking …
Historically, mining processes left behind mountains of tailings–waste materials that contain metals and minerals left over after the extraction of valuable resources. This article …
Converting Iron Mine Tailings into Composite Aggregates …
The results of the close packing model indicate that the UHPM material is most closely packed when the IT content is about 60%. The random aggregate distribution model also indicates that the range of 60%–80% IT admixture is the optimal gradation interval for UHPM, and the results of the two models are consistent with the basic performance ...
Gold In Tailing Piles
Many old-timers and even more modern miners lost a remarkable amount of gold in their mining operations. Some tailing piles contain fortunes in lost gold values if identified and properly reworked with modern mining methods. Lode or hard rock tailings and mine dumps can be very productive sources of gold specimens, as many times good…
Good Earth: Exploring the Old Lead Belt – Anthropology Now
During this 108-year period, an estimated 8.5 million tons of elemental lead were extracted from the Old Lead Belt, producing close to 250 million tons of contaminated mine tailings. Deposited in expansive tailing ponds or heaped into mounds known as "chat piles," this toxic mine debris grew to hundreds of feet tall and dominated the area ...
Systematic characterization of historical tailings for possible
In this paper, a conceptual framework is proposed for how relevant information about historical tailings can be generated and structured in a systematic manner. The case of the …
Socio-Environmental Risks Linked with Mine Tailings …
There is a need to define mine tailings in a clear, precise, multidisciplinary, transdisciplinary, and holistic manner, considering not only geotechnical and hydraulic concepts but also integrating environmental and geochemical aspects with implications for the sustainability of mining. This article corresponds to an independent study that answers questions concerning …
mine tailings dredge Archives
I opened Old Seattle Paperworks in 1976 on 8th and Pike Streets in downtown Seattle, Washington. A lifelong obsessive compulsive collector, I had previously been eking out a meager living as an antique picker and book scout since leaving home at age 16.
Abandoned gold mine tailings : mineralogy, environmental …
The sulfur content of the tailings is at the average of 2.03%. The presence of sulfur may trigger a harmful environmental condition called acid mine drainage. ... The results of the mineralogical examination of old sulphide and oxidized gold ore tailings of a mining and processing plant in the Krasnoyarsk Territory are presented. Secondary ...
Advancing sustainable and circular mining through solid …
The higher the solid content in tailings the higher the yield stress (Ruiz and Rojas, 2013, Sofrá and Boger, 2002a, Wu et al., 2015). ... Historical assessment of metal recovery potential from old mine tailings: a study case for porphyry copper tailings, Chile. Min. Eng., 127 ...
The impacts of century-old, arsenic-rich mine tailings on …
Silver mining in the early-1900s has left a legacy of arsenic-rich mine tailings around the town of Cobalt, in northeastern Ontario, Canada. Due to a lack of environmental control and regulations at that time, it was common for mines to dispose of their waste into adjacent lakes and land depressions, concentrating metals and metalloids in sensitive aquatic …
The effects of migration on ca. 100-year-old arsenic-rich mine tailings
Century-old tailings at the Beaver Mine site, Cobalt, Ontario, Canada are migrating downstream to previously uncontaminated Kirk Lake, resulting in metal dispersal into the environment. These metal-rich tailings have high arsenic concentrations and exceed the Ontario regulatory standards for arsenic in soil (18 mg/kg) by up to 240 times. Arsenic concentrations in …
CHAPTER IX
A legacy site is one where '… mining leases or titles no longer exist, and for which responsibility for their rehabilitation cannot be allocated to any individual, company or organisation that has …
Old Mine Tailings: New Mother Lode For Rare Elements
July 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 ...
Evaluation of a 20–40 year old gold mine tailings …
It is sometimes difficult to establish vegetation on mine wastes because of the relatively high salt content of the waste, as well as erosional hazards in the area where the tailings storage ...
Mine Tailings: The Cornerstone of Safe Mining Operations
Mine Tailings: The Cornerstone of Safe Mining Operations In the mining industry, where precious minerals and resources are extracted from the depths of the earth, a significant byproduct arises - mine tailings. These tailings demand rigorous management strategies to safeguard the environment, surrounding communities, and the long-term
Treasure from trash: how mining waste can be …
One example is Tasmania's Old Tailings Dam, which contains mine waste piled more than 30 metres deep between 1962 and 1982. While many rehabilitation options have been considered, ...
Inside old reclaimed mine tailings in Northern Ontario, …
The results confirm that organic matter content and soil acidity are important drivers of soil microbial biomass [12]. These results also suggest that ecological restoration of mine tailings is strongly associated with improvement of above ground vegetation and promote the development of the microbial community in tailings.
Turning Tailings into Treasure: A New Generation of Best …
Now in its 6th year, Mining Journal, Mining Magazine and Australia Mining Monthly's Tailings report 2024 explores the multifaceted challenges faced by mining companies in their tailings management ...
How Dredging Improves Tailings Pond Stability and Safety?
In summary, mine tailings dredge technology plays an essential role in maintaining the stability and safety of tailings ponds. By preventing pond overfill, reducing the risk of dam failure, improving water recovery, and facilitating proper disposal, dredging helps ensure that tailings ponds remain safe and effective for long-term storage.
How to manage tailings efficiently and economically
In the early stages of the mining industry, tailings were disposed in the most convenient manner, such as in downstream running water or down drains. Because of concerns about these sediments in water and other issues, tailing ponds came into use. ... It is time to replace the old and negative risk-avoidance position with a new value creation ...
5 methods of gold mine tailings treatment and comprehensive recovery
The gold content in gold mine tailings is generally 0.2-0.6g/t. Due to the backward mining technology in the past, some of the gold and silver is lost in the tailings. At the same time, most of the gold ore in China is accompanied by copper, lead, and copper. With the advancement of beneficiation technology, zinc, iron, sulfur, and other ...
Bioleaching of Copper From Old Flotation Tailings Samples (Copper Mine
Bioleaching of samples taken from depths of 10, 15, and 20 m from old flotation tailings of the Copper Mine Bor was conducted in shaken flasks using the extremely acidic water of Lake Robule as ...
Mine tailings composition in a historic site: implications for
Metal content in grasses growing on some areas of the tailings were elevated and demonstrated the inability of the tailings to support sustainable plant growth. Due to the …