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Henry's Knob Site Case Study Revitalizing Mine Tailings

Revitalizing Mine Tailings in Clover, South Carolina Figure 1. Henry's Knob in 1941 (left) prior to mining and Henry's Knob in 1981 after mining (right). (Source ABB Inc.) 1.The Superfund Alternative Approach uses the same investigation and cleanup process and standards that are used for sites listed on the National Priorities List (NPL).

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Assessment of Store-and-Release Cover for Questa

Figure 1. Location map of Questa tailings facility. Figure 2. As-Built profile of test plot TP-3. The test plots for this study were constructed on the tailings beach between Dam 1 and Dam 1C (Figure 1). Dam 1 was constructed in 1966 as an earthfill dam across an arroyo and was raised by

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Tailings Dam Failures A Review of the Last One

ly, the increase in tailings dam failures from 10% to 40% in large dams (stor-ing in excess of 10 x 10 6 m3 of tailings) should be due to one or more of the afore-mentioned reasons. Impact of Failures Figure 6 summarizes the failure distribution by tailings release amount. The figure illustrates that a significant portion (29% for pre-2000

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Sustainable Development of Abandoned Mine Areas

Figure 1.Figure 1. View of the abandoned tailings daView of the abandoned tailings dam at the Sangdong mine in Korea.m at the Sangdong mine in Korea. Sustainability 2016, 8, 1320 3 of 12 Table 1. Meteorological site conditions of the study area. Item Value Latitude (deg) 37.1

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Henry's Knob Site Case Study Revitalizing Mine Tailings

Revitalizing Mine Tailings in Clover, South Carolina Figure 1. Henry's Knob in 1941 (left) prior to mining and Henry's Knob in 1981 after mining (right). (Source ABB Inc.) 1.The Superfund Alternative Approach uses the same investigation and cleanup process and standards that are used for sites listed on the National Priorities List (NPL).

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High density slurry and paste tailings, transport systems

HIGH DENSITY SLURRY AND PASTE TAILINGS, TRANSPORT SYSTEMS 159 Introduction in Figure 1 (Jewell et al, 2002). At some value of solids High density slurry and paste tailings systems offer significant environmental benefits primarily related to reduced water consumption. However, these potential advantages need to be evaluated

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Long-term Risk of Tailings Dam Failure (U.S. National Park

Figure 5. Bingham Canyon Mine tailings pond. EcoFlight. Second, while water supply dams are all of the down-stream-type construction, the construction of tailings dam can be either (1) downstream, (2) centerline, (3) upstream, or (4) a combination of any of the previous methods.

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Short Term Sulfate Release Rates and Sulfide Oxidation

1 Short Term Sulfate Release Rates and Sulfide Oxidation Mechanisms for Taconite Tailings from the Minntac and Keetac Mining Facilities Ben Von Korff and Travis Bavin 1/3/2014 Minnesota Department of Natural Resources Division of Lands and Minerals 500 Lafayette Road, Box 45

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Effectiveness of Geomembranes in Tailings Storage

Sep 25, 2018 · For the past few years, KCB has collaborated on several geomembrane research projects with Prof. R. Kerry Rowe and his team at the Geo-Engineering Centre at Queen's University in Kingston, Ontario. The research is assessing the effectiveness of geomembrane liners in tailings

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Guidelines for Determining Oil Sands Fluid Tailings

Figure 31 Typical Fluid Tailings Deposit Profile . The methods for determining the mudline depth in a water covered deposit described herein are based on ponds with a narrow transition zone from clear water to fluid tailings. In a fluid tailings deposit with no substantial surface water layer, the mudline is effectively the top of the deposit.

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Geoenvironmental Characterization of Sulfide Mine Tailings

The I geo index was calculated for tailings from Brunita, and tailings and colluvial from San Quintín . As, Cd, Pb, Sb, and Zn from Brunita tailings show extreme contamination (I geo > 5), whereas Cu and Sn show moderate to strong contamination (1 < I geo < 4). Ag is classified as a nonpollutant.

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TAILINGS DISPOSAL AN APPROACH TO OPTIMIZE

Figure 3-Medium-density tailings disposal and water recovery High-density tailings disposal The high-density tailings disposal system is shown in Figure 4. The thickening requirements include a single 17 m diameter paste thickener and a flocculant make-up and dosing plant capable of dosing at a rate of 50 g/t.

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TAILINGS SYSTEM EMERGENCY PREPAREDNESS PLAN

Tailings System Emergency Preparedness Plan EP.008.R0 Page 4 of 17 The controlled version of this document is located in the Fording River Document Control SharePoint Intranet Page as EP.008 Tailings System Emergency Preparedness Plan. THIS DOCUMENT IS UNCONTROLLED IN HARDCOPY FORMAT Figure 1 Tailings Dam Inundation Zone

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OIL SANDS TAILINGS TECHNOLOGY DEPLOYMENT

Figure 6-1 Scaling in Tailings R&D .. 77 Figure 7-1 Unique Technologies Currently within the Research Stage of Development 94. Page ix LIST OF APPENDICES APPENDIX A Glossary APPENDIX B Technology Lists APPENDIX C Mine and Tailings Planning APPENDIX D Commercial Tailings Technology Suites

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Design of coarse tailings and dry ash disposal facilities

coarse tailings only, a single slope develops such as Figure 1, but for a combined dump, it is common for a composite slope to develop. The composite slope may comprise a bulge similar to a potbelly shape as presented in Figure 2 and 3, or a concave shape flattening to a

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Dam History Report Alaska Department of Natural

ZTailings Main DamTailings Main Dam History Report in ProgressDam History Report.doc 1 1.0 INTRODUCTION The tailings main dam at the Red Dog Mine is a 182-feet high rock fill embankment with a primary seepage control system in the dam and a secondary seepage control system downstream of the dam. The mine

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A Guide to Audit and Assess Oil Sands Fluid Fine Tailings

A Guide to Audit and Assess Oil Sands Fluid Fine Tailings Performance Management Canada's Oil Sands Innovation Alliance August 22, 2014 Page 4 1.3 Planning and Review Process Figure 1 is taken from Guidelines for Performance Management of Oil Sands Fluid Fine Tailings Deposits to Meet Closure Commitments. It highlights the point in the

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Tailings Reprocessing Magna Copper Company's Pinto

1 7.0 Tailings Reprocessing Operation .. 1 2.1 Miami #2 Tailings Pile (Figure 1). The area is Draft 1 August 1993 . Tailings Reprocessing Pinto Valley characteristic of the semi-arid southwest region. The tailings reprocessing operation involves reprocessing the Miami #2 tailings pile. which covers 210 acres and contains 38 million tons of

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Stabilization of a Tailings Dam by De-Watering

1!111111!1 Proceedings Third International Conference on Case Histories in Geotechnical Engineering, St. louis, Missouri, ~ June 1-4, 1993, Paper No. 2.27 Stabilization of a Tailings Dam by De-Watering A. B. Fourie Department of Civil Engineering, University of Witwatersrand, South Africa G. I. McPhail Steffen, Robertson and Kirsten, Johannesburg, South Africa

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Design of coarse tailings and dry ash disposal facilities

coarse tailings only, a single slope develops such as Figure 1, but for a combined dump, it is common for a composite slope to develop. The composite slope may comprise a bulge similar to a potbelly shape as presented in Figure 2 and 3, or a concave shape flattening to a

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Long Term Risks of Tailings Dam Failure v.5.3 Oct11

Page 1 LONG TERM RISKS OF TAILINGS DAM FAILURE David M Chambers1, Bretwood Higman2 October, 2011 2001, include "dam failures" an event resulting in the escape of tailings and/or water from the tailings dam. 8 "This figure (Fig.9) also indicates that

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Dewatering options for management of fine gold

As shown in Figure 1, the two samples tested presented similar density and particle size distribution (PSD). These samples are considered as having a fine PSD relative to typical gold tailings samples, with 40 to 50% passing 10 µm. Figure 1 PSD of analysed samples (SG = specific gravity) 0 % 10 % 20 % 30 % 40 % 50 % 60 % 70 % 80 % 90 % 100 %

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Geochemical Characteristics of Oil Sand Tailings and

1 Geochemical Characteristics of Oil Sand Tailings and Bitumen Upgrading By-Products, Alberta, Canada Bronwen Forsyth1, Stephen Day1 and Oladipo Omotoso2 1. SRK Consulting, Canada 2. Suncor Energy Inc, Canada ABSTRACT Few studies have characterized the metal leaching and acid rock drainage (ML/ARD) potential of

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RECOVERY OF VALUES FROM A PORPHORY COPPER

from the deportment data that is plotted alongside the recovery data in Figure 1. This data was collected from operating plants where samples from the tailings stream were analyzed on a size-by-size basis. As shown, a significant amount of value still remains in the tailings in the finest and coarsest size fractions.

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What is in Mount Polley Tailings? Imperial Metals Corp

Apr 06, 2016 · 10.5 1.75 94.7 4.73 NA 2.98 1.9 194 16.7 204.2 .44 Table 2. Selected trace element concentrations found in the Mount Polley tailings (TSF average value for 2013) and a sample of the black crumbly rock from the parking lot at the Likely Community Hall (C. Hall avg, sampled in October, 2014). Figure 1.

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Tailings Fact Sheet

Figure 1 shows an overview of the stages of construction. Akyem Cell 1 TSF, Ghana Africa as shown on Figure 2. The tailings are first deposited behind the dyke and the embankment is raised in a downstream manner over time. Figure 2 Downstream construction method .

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Dry Tailings Management Plan azdeq.gov

Figure 2 Tailings Stacker and Equipment Tracking on Tailings Figure 3 Concurrent Reclamation of Outer Buttress Slope . Dry Tailings Management Plan Page 1 1.0 PLAN OBJECTIVE AND DESCRIPTION This Dry Tailings Management Plan (Plan)

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Uranium Mill Tailings Remediation in the United States

Nov 19, 2015 · A tailings pile before remediation at the Durango, CO site is shown below in Photo 1. One should note the rather steep slopes and what appear to be rivulets indicating erosion and possible exposure of the tailings. Table 1 Concentrations Dry Waste Basis and Distribution of Uranium in Soils (Gavrilescu 2008) Photo 1.

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1.0 INTRODUCTION 1.1 Co-disposal Terminology

tailings about 5 m thick. The tailings layers will be created by constructing a series of tailings disposal cells. Typically, each tailings disposal cell will be a nominal square of 200m by 200 m (Figure 3). The cell perimeter berms will be constructed by end dumping mine rock (Type 2 or 3). The berm will have a nominal crest width of

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Figure 1. Area of LTVSMC Tailings Facility, U.S.F.S

Figure 2, LTVSMC Tailings Facility and Second Creek Features, U.S.F.S. Map 1997, revised 2011. By 1997, in addition to headwaters for Second Creek, the LTVSMC tailings waste facility will inundate Trimble Creek and Unnamed Creek. This area is shown as "Mine Dumps" in sections 10 and 11 of the map. This map also reflects 1997

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