Remediation project ramps up at Questa Mine
After it is amended with organic material, it is used to test the optimal grade for reclaiming the mine's waste rock piles and to test the pros and cons of different depths of ground cover and aptitude for reseeding. Nathan Burton ... Workers using a variety of heavy equipment to regrade the Capulin waste rock pile in order to reduce erosion ...
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Background for NEPA Reviewers: Non-Coal Mining …
Mine drainage limits Topsoil piles Haul roads not on active mining area Land application area 1 Crusher area 1 Spent ore piles 1, surge piles, ore stockpiles, waste rock/overburden piles Pumped and unpumped drainage and mine water from pits/underground mines Seeps/French drains 1 On-site haul roads, if constructed of waste rock or spent
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What is Waste Rock?
Positive: By having a proper waste rock management plan, including environmental safeguards and reclamation, GoldRush minimizes the negative impacts of its mining operation. Negative: Despite these efforts, a small section …
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Waste rock study – a major research opportunity
main waste rock pile performs. "Our test waste rock piles research project is a collaboration of Diavik, three Canadian universities, industry, and science agencies," said Diavik Senior Specialist, Mineral Waste, Lianna Smith. Ours is one of only a handful of …
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Reclamation Strategies for Waste Rock and Tailings …
View of Greens Creek waste rock pile removal (left) and replacement of pyritic rock with non-pyritic fill (upper right) (Greens Creek file) ... waste rock removal at 960 site near mine portal. (Greens Creek file) Improvement in drainage quality after removal of waste rock from the 960 site near the mine portal (HGCMC, 2011) Site 347 Before
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Design and Operation of Waste Rock Piles at Noncoal Mines
In North America, most waste rock pile research is currently being performed by several different Canadian government and industry- sponsored groups. These groups include: the British …
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2.3 Management of Mine Wastes
The majority of the rock extracted in an open pit operation does not contain an economic mineral resource and is placed in waste rock stockpiles (Figure 5). These piles commonly have a large footprint and can be tens to hundreds of meters in height. Waste rock piles at large, open-pit operations may contain up to several billion tons of material.
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Characterization of particle size segregation and …
Large amounts of waste rock are produced during mining operations and often disposed of in large piles. Particle size segregation usually occurs during waste rock disposal, which can lead to high ...
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Office of Wastewater Management
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 potential and acid-buffering potential. With this knowledge, the rock can be placed in the pile in such a way as to ...
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9.3 Tailings Storage Facilities and Waste Rock …
Figure 22 – Example of an isolation cover placed on a re-contoured waste rock pile. A number of factors are considered when evaluating the potential benefits of cover placement on mine wastes. A soil cover can be designed to enhance …
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Numerical simulation of water flow in a large waste rock pile…
Waste rock is the large volume of broken rock and low grade ore materials tend to create potential problems, such as acid mine drainage (AMD), leaching of heavy metals, and slope stability problems. These problems are related to the flow of water through the waste rock. In this study, long term numerical simulations of unsaturated flow in a large waste rock pile are …
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2.3 Management of Mine Wastes
Waste Rock. The majority of the rock extracted in an open pit operation does not contain an economic mineral resource and is placed in waste rock stockpiles (Figure 5). These piles commonly have a large footprint and can be tens to …
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Waste Rock Management
Waste rock, foreground, from Diavik Diamond Mine open pits. Top right is the mine's processed kimberlite containment area. To study waste rock, the mine built the world's largest waste rock test pile. For a feature from the mine's …
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Hydrogeological behaviour of an unsaturated waste rock pile …
Parent geology, mining operation, construction practice and weathering processes govern the hydrogeological behaviour of waste rock piles. Variable heterogeneity in such earth structures requires site specific correlations. Based on field investigation and laboratory characterization, this paper developed a physical model for the unsaturated East Pile at the …
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Mine Waste Rock Storage Facilities Design, …
Mine waste rock piles configurations tend to take advantage of the topography in which they are situated. Common classification for such configurations has been described by Hawley and Cunning (2017), as follows: valley-fill, cross-valley, side-hill, ridge, or heaped. Within a particular topography the method of deposition and
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Hydrogeochemical Response of a Variably …
Waste-rock heterogeneity is attributed to the physical, chemical, lithological, and mineralogical characteristics of waste rock, variations in the topography of the waste-rock pile and its foundation, and waste-rock pile …
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HYDROGEOLOGY OF WASTE ROCK DUMPS MEND …
Our analysis of the hydrogeological properties of waste rock piles is based on a synthesis of data from four mine sites; Myra Falls, B.C., Island Copper, B.C., Elkview Mine, …
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Effect of construction method and bench height on particle …
1. Introduction. Large amounts of waste rock are generated by mining operations and are generally stored on the surface in piles or dumps [Citation 1–4].Waste rock piles are constructed by repeatedly dumping waste rock along the slope using various methods, such as end-dumping and push-dumping [Citation 5, Citation 6].Construction methods are usually …
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Mine Waste Rock: Insights for Sustainable
occur in waste rock and tailings: the conceptual hydrogeochemical model is often comparable for waste rock and tailings [2]. The dimensions of industrial-scale waste-rock piles and tailings facilities
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Assessment of released natural radionuclides by waste rock pile …
The Ore Treatment Unit was a uranium mining company that is currently being decommissioned. The local rainfall index makes it necessary to release effluents into the environment. After releasing, the wastewater is available for unrestricted use. Current study aims to use national and international recommendations to assess the radiological potability of …
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Multiphase transfer processes in waste rock piles producing acid mine
The numerical simulations of waste rock piles described in this paper were carried with TOUGH AMD developed by Lefebvre, 1994, Lefebvre, 1995. This simulator was developed in the context of a detailed study of a waste rock pile at the Doyon mine (Gélinas et al., 1994). Only the main features of the simulator are summarized here.
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(PDF) Mine Waste Rock: Insights for Sustainable
Mine waste rock and tailings are typically the two major waste types at mine sites, regardless of the mineral commodity (e.g., coal or base/precious metals), deposit t ype or extraction method
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Hydrogelogical characterization of a waste rock pile and …
Mining activities are known for the profound changes they cause in the environment, especially those related to environmental liabilities generated by these enterprises. One major concern of this sector relies on the acid mine drainage (AMD) process, which is formed by the exposure of sulfide minerals to oxidizing conditions. As a result, the production of low …
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3.3 Representative Hydraulic Properties of Mine …
Waste rock stockpiles. From a hydrogeological perspective, waste rock stockpiles are more complex structures than tailings deposits. The macro-scale properties of a stockpile depend upon: (i) the relative fractions of finer material and …
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Waste rock pile characterization, heterogeneity, and geochemical
Mine waste rock piles (MWRPs) are anthropogenically created landforms in present and past mining areas that are derived from open pit and underground mining methods. Surficial oxidation of sulfide minerals of MWRPs is a major cause of acid drainage and can increase concentrations of toxic metals downgradient from them. MWRPs exhibit a diverse ...
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Hydrogeochemical Response of a Variably Saturated …
Bearing Mine Waste-Rock Pile to Precipitation: A Field-Scale Study in the Discontinuous Permafrost Region of Northern Canada Zhongwen Bao1, Jeff Bain1, Steven P. Holland1, David Wilson1, Carol J. Ptacek1, and David W. Blowes1 1Department of Earth and Environmental Sciences, University of Waterloo, Waterloo, ON, Canada
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Mine Wastes and Legacy Mine Lands | U.S. Geological …
For instance, mine waste piles can contain chemicals like arsenic that can leach into waterways. Adits and mine shafts can be unstable, and potentially harm hikers or others. ... Science: plant growth in hard rock mining waste. Science: plant growth in hard rock mining waste. Our data in a decision support tool: hazard assessment and ...
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Mine Waste Rock
To overcome the segregation effect observed in phosphate mine waste rock piles, Amrani et al. (2019) collected samples with equal weight at the base, the middle, and the top of the pile. Furthermore, heterogeneity was considered by Munroe et al. (1999), where samples were collected on the slope of the waste rock piles. The pile was divided into ...
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Geochemical characterization of acid mine drainage from a waste rock …
Water quality in the unsaturated and saturated zones of a waste rock pile containing sulphides was investigated. The main objectives of the project were (1) the evaluation of geochemical trends including the acid mine drainage (AMD)-buffering mechanism and the role of secondary minerals, and (2) the investigation of the use of stable isotopes for the interpretation of physical and …
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Investigating the Influence of Structure and Heterogeneity in Waste …
This approach is similar to methods previously used by Lahmira et al. (2017) and Wilson et al. (2018) and is in line with recent observations at the Antamina Mine, Peru, where flow through experimental waste rock piles was dominated by matrix flow with relatively small contributions of preferential flow (Blackmore et al., 2014; Pedretti et al ...
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