uranium mining waste rock dump design

Study of Generation and Underground Flow of Acid Mine Drainage in Waste

Therefore, this paper aims to analyze the relationship between AMD origin and its flow within waste-rock piles at an unoperational uranium mine, as an attempt to comprehend physical processes and phenomena behind AMD generation. Thus, it will be possible to suggest technical procedures to mitigate environmental impacts in aquifer …Web

Stabilization of Mine Waste Dumps Through Bio-Engineering

A continual increase in the quantity of wastes produced make stabilization of waste dumps a formidable task both from economic and technological standpoints. Of late, bio-engineering approach has been emerging as one of the most, affordable, eco-friendly, efficient and widely used methods of stabilizing such waste dumps. This study …Web

Uranium mines and mills waste

The main types of waste generated by the mining and milling of uranium ore are tailings and waste rock. Tailings are the waste produced by grinding the ore and the chemical concentration of uranium. When …Web

TENORM: Copper Mining and Production Wastes

Copper mining waste piles may be as large as 400 hectares and typically include three types of waste: Tailings (33%). Dump and heap leach wastes (28%). Waste rock and overburden (39%). Some of the copper mine wastes have been put to use, but on a limited scale. Mixtures of crushed waste rock, including waste rock from the copper …Web

TENORM: Copper Mining and Production Wastes | US EPA

This chemical reaction produces acid mine drainage (AMD), a pollutant that is present at many abandoned mine sites. Learn more about abandoned mine drainage. Copper mining waste storage piles may be as large as 1,000 acres and typically include three types of waste; tailings, dump and heap leach wastes, and waste rock and …Web

Church Rock, NM: Living with North America's Worst …

MASE is working to reduce the broad range of harm from the uranium industry in the region. In 1968, United Nuclear opened the largest underground uranium mine in the USA near Church Rock, which has …Web

Case Summary: Cleanup Agreement Reached at Former Uranium Mine …

As a result of the widespread mining activity, the site contains two open pits partially filled with water, four pits completely filled with waste rock, at least seven stockpiles of ore and protore, numerous dump areas, and multiple piles of waste rock. More information on the Midnite Mine Superfund Site. Pollutants and Environmental Effects ...Web

Acid rock drainage in the uranium mining and milling site of …

the waste-rock piles at the Pocos de Caldas uranium mining site. The mathematical code STEADQYL was used. The estimated results were in good agreement for sulphate and uranium concentrations and the duration of the acid water generation was estimated to be about 500 years. The effect of covering the dump with a material thatWeb

Recycling and Reuse of Mine Tailings: A Review of …

According to Table1, mining waste can present itself as rock waste from the bedrock that has been mined and transported out of the pit. However, it does not have a metal concentration of economic interest. It is stored in a landfill site near mining production because it is not economically viable to transport to another site [34]. In the ...Web

Mine Waste Rock

2.1 Overview. The U.S. Department of Energy defines waste coal as usable material that is a byproduct of previous coal processing operations. Waste coal is composed of mixed coal, soil, and rock (mine waste). Most waste coal is burned as is in unconventional fluidized-bed combustors. For some uses, waste coal may be partially cleaned by ...Web

Waste rock dumps

Dump design. The dump's profile (e.g. height and slope angles) should be designed to ensure the final structure is safe, stable and not prone to significant erosion. Factors that …Web

Ten-Year Plan to Address Impacts of Uranium …

Uranium Mine . Screening Assessment Report and Atlas with Geospatial Data U.S. House Committee on Oversight and . Government Reform . convenes hearing on legacy of uranium mining on the Navajo Nation. 2008. Navajo Nation CERCLA . statute enacted. First Five-Year Plan . created by EPA, DOE, NRC, BIA, and IHS. EPA removes waste . …Web

Abandoned Uranium Mines Working Group Health and …

The Abandoned Uranium Mines Working Group (AUMWG) is a consortium of federal agencies working together to address the human health, safety, and environmental challenges posed by the nation's approximately 4225 abandoned mines resulting from legacy defense‐related uranium mining.Web

6 Potential Environmental Effects of Uranium Mining, Processing, …

The disposal of waste rock is an issue in mining in general, because the volume of the mine voids cannot contain the entire volume of material removed during a mining …Web

Navajo Nation pushes for radioactive waste remnants to be fully …

By: Arlyssa Becenti - October 22, 2021 6:50 am. The Northeast Church Rock Mine in October 2009. (Photo from the U.S. EPA) GALLUP – Navajo Nation continues to hold strong on its stance against radioactive waste being dumped near its lands, while also pushing for the waste to be removed completely. The Church Rock uranium mill site is …Web

Mathematical modeling for optimized mine waste rock disposal

Translating laboratory-based estimates of PAF, NAF, ANC, and UC into real waste rock dump design is a critical step in mine design and waste management. Considering this, it is critical to model the sequence by which waste rock is transported to the dump allowing for optimal ARD mitigation. ... Chapter in book: Uranium, mining, …Web

MINE TAILINGS FACILITIES: OVERVIEW AND INDUSTRY …

of the mine. The embankment design terms, upstream, ... Estimate of the volume of tailings and waste rock produced in 2016 in relationship to ore production (c.f. plastic waste weight and volume) Copper 46% Gold 21% Iron 9% Coal 8% Phosphate 4% Lead – zinc 3% Nickel 2% Platinum Group Elements 1% Bauxite 1% Uranium <1% Chromium <1% …Web

9.3 Tailings Storage Facilities and Waste Rock Stockpiles

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 storm runoff in comparison to that occurring on the tailings surface or waste rock stockpile if it were left uncovered.Web

Full article: Methodology for a dump design optimization in large-scale

1. Introduction. Three major destination groups, characterized by a cut-off grade criteria and ore type, represent the places in the mine where the material receives specific treatment after its delivery from the pit: leach dumps, waste dumps and mill (Hustrulid, Kuchta, & Martin, Citation 2013).Dump leaching facilities are built to receive and treat low-grade …Web

Management of wastes from uranium mines and mills

Starting with effluents containing 4—40 Bq/htre (100— 1000 pCi/htre) radium such treatment can reduce it to levels of about .07-.2 Bq/litre (2-5 pCi/litre) which are considered …Web

Restoration of Mine-Site Waste-Rock Dumps | SpringerLink

The waste-rock dump being restored is a heterogeneous mixture of mined materials (plate 6.2) composed of hard rock, which is resistant to weathering, and regolith, which readily weathers; globally, this type of waste-rock dump is common on hard-rock mines. ... Mine landform design using natural analogues. PhD diss., University of Sydney, Sydney ...Web

Navajos press for action by the government to clean up uranium …

A 10-year plan on how these funds will be used has been put in place by the Navajo EPA. "It's going to take a long time to clean up the uranium mines," said Chris Shuey, co-investigator for ...Web

RadTown Uranium: Teacher Information | US EPA

Physically removing the rock ore through open-pit mining or underground mining. Open-pit mining involves stripping away or excavating the topsoil and rock that lie above the uranium ore. Underground mining involves extracting rock through a tunnel or opening in the side of a hill or mountain, or digging a shaft from the surface into the ...Web

The geochemistry and hydrology of coal waste rock dumps: A …

The major waste product of coal mining is waste rock, which is stored in dumps of various sizes. Although the adverse effects of coal waste rock dumps on ecosystems and human health are widely recognised, there is little information on their internal hydrological and geochemical processes in the peer-reviewed literature.Web

Investigating the Influence of Structure and Heterogeneity in Waste

Placement methods and material availability during waste rock pile (WRP) construction may create significant heterogeneities in physical and geochemical parameters (such as grain size, permeability, mineralogy, and reactivity) and influence the internal pile structure. Due to the enormous scale of WRPs, it is difficult to capture the influence of …Web

Logical Framework for the Design, Construction, and …

increasing economic incentives for companies to adopt progressive mine rehabilitation, least risk waste rock dump design, and construction procedures that will consistently deliver quality, cost-effective results. This paper outlines a framework covering the various stages in design, construction, and rehabilitation of a waste rock dump.Web

Waste rock dumps

• design the pit abandonment bund according to our guidelines • backfill earlier mined-out pits if you can. Waste rock characterisation Before construction of the waste dump commences, it is essential to know what types of material will go into the dump, so their location within the dump can be planned. The following materials should beWeb

6 Potential Environmental Effects of Uranium Mining, Processing, …

Campos et al. (2011) and previous investigators identified the principal source of acid drainage at this site as the mine-waste rock piles, not from the tailings management facility. ... see Chapter 7) recently approved and licensed a partially abovegrade tailings disposal design for the Piñon Ridge uranium mill even though fully belowgrade ...Web

Contaminant dispersion at the rehabilitated Mary Kathleen uranium mine

This study reports on the transfer of contaminants from waste rock dumps and mineralised ground into soils, sediments, waters and plants at the rehabilitated Mary Kathleen uranium mine in semi-arid northwest Queensland. Numerous waste rock dumps were partly covered with benign soil and the open pit mine was allowed to flood. The …Web

Mine waste disposal | SpringerLink

Abstract. Mine wastes are a broad group of waste materials resulting from the extraction of metals and non-metals. The wastes include solid, as well as liquid waste, and can be inert or can contain hazardous constituents. In general, mine waste consists of high volume, low toxicity wastes (EPA, 1985).Web