Short CoursesTailings and Mine Waste 2019 Conference Series

Static liquefaction and strength loss of tailings dams due to undrained failure has become a topic of interest in tailings management following the Fundão and Mount Polley tailings dam failures. Static liquefaction is the sudden loss of strength when loose soil, typically granular material such as sand or silty sand, is loaded and cannot drain.

Recycling and Utilization of Mine Tailings as Construction

Recycling and Utilization of Mine Tailings as Construction Material through Geopolymerization Lianyang Zhang, Ph.D., P.E. Department of Civil Engineering and Engineering Mechanics University of Arizona, Tucson, Arizona U.S. EPA Hardrock Mining Conference 2012: Advancing Solutions for a New Legacy April 35, 2012, Denver, Colorado

STABILIZATION OF IRON MINE TAILINGS THROUGH

STABILIZATION OF IRON MINE TAILINGS THROUGH MICROBIALLY INDUCED CALCITE PRECIPITATION By Noah D. Buikema A THESIS Submitted in

Mount Polley mine disasterWikipedia

The Mount Polley mine disaster is an environmental disaster in the Cariboo region of central British Columbia, Canada, that began 4 August 2014 with a breach of the Imperial Metalsowned Mount Polley copper and gold mine tailings pond, releasing its water and slurry with years worth of mining waste into Polley Lake.The spill flooded Polley Lake, its outflow Hazeltine Creek, and continued into

STABILIZATION OF IRON MINE TAILINGSDigital Commons

STABILIZATION OF IRON MINE TAILINGS THROUGH MICROBIALLY INDUCED CALCITE PRECIPITATION By Noah D. Buikema A THESIS Submitted in

STABILIZATION OF IRON MINE TAILINGS THROUGH

STABILIZATION OF IRON MINE TAILINGS THROUGH MICROBIALLY INDUCED CALCITE PRECIPITATION By Noah D. Buikema A THESIS Submitted in

In Situ E Amendments to Stabilize Oxidized AcidGenerating

Eagle/Telbel mine site, which is now referred to as Joutel mine. The main objective of this study was to test the in situ e ectiveness of these materials to stabilize acidgenerating tailings.

Microbial communities in low permeability, high pH uranium

Methods and Results. To assess microbial diversity and their potential to influence the geochemistry of uranium mine tailings using aerobic and anaerobic culturebased methods, in conjunction with next generation sequencing and clone library sequencing targeting two universal bacterial markers the 16S rRNA and cpn60 genes. Growth assays revealed that 69% of the 59 distinct culturable

CONTROL OF ACID ROCK DRAINAGE FROM MINE

CONTROL OF ACID ROCK DRAINAGE FROM MINE TAILINGS THROUGH THE ADDITION OF DISSOLVED ORGANIC CARBON by Paul John Sturman A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Engineering MONTANA STATE UNIVERSITY Bozeman, Montana November 2004

Mount Polley Mine Tailings Dam Failure: Update on

to be nonreactive in the Hazeltine Creek environment because pH conditions are neutral and there is a low risk of acid rock drainage potential from the tailings. Kinetic testing results have been reported for 32 weeks as of the date of this report. Results support the assessment that ARD is not expected from the tailings and leaching will be under

Geochemistry of Tailings from the Mount Polley Mine

Testing included paste pH and conductivity, modified Sobek Neutralization Potential determination MEND 1991, total sulphur by LECO furnace and sulphate sulphur by hydrochloric acid HCl leach. A nonsulphide copper analysis was alsoGeochemistry of Tailings from the Mount Polley Mine

Duluth Complex Tailings Dissolution

mine tailings can react with oxygen and water to release acid and heavy metals. This reaction is affected by the water content of the tailings and the depth within the tailings. Laboratory dissolution tests are typically conducted by mining companies to aid in predicting the water quality resulting from tailings

Geotechnical Properties of Mine TailingsASCE Library

CRR of the four tailings were found to be comparablewith previous report data onother metal tailings, and the consolidation stress showed little impact on CRR. The laboratory tests provided useful information to understand the geotechnical behaviors of mine tailings including seepage, deformation, strength, as well as seismic responses.

REMEDIATION OF MINE TAILINGS BY NANOSCALE ZERO

treatment amongst all metal contaminants present. The final phase of the project saw the testing of contaminated waters produced from five mine tailings, acquired from separate sources, by the same dose of nZVI as in the first two phases of the project. Results showed that where contaminant metals were present some remediation effect did occur.

An ecotoxicological assessment of mine tailings from three

The seawater that was added to the tailings was pH 8 and pH 6.2, creating two series of mine tailing T/D solutions, seawater without tailings was used as control. The natural pH of the seawater was 8, whilst a second volume of seawater was pH adjusted to 6.2 with 10 M HCl.

Investigating for Dry Stack Tailings Facility Closure

Investigating for Dry Stack Tailings Facility Closure: Multidisciplinary Evaluation at the Pogo Mine, Alaska * [email protected], Ph. +19072733604 Dan Neuffer and Christopher Stevens, SRK Consulting U.S. Inc., USA Russell Staines, SRK Consulting Australasia Pty Ltd., Australia Makoto Umedera and Sally McLeod, Sumitomo Metal Mining Pogo

Rhamnolipid biosurfactantenhanced soil flushing for the

It was shown to fall into the range of reported organic matter contents in mine tailings from below detection level to 5.8% and also the range of the organic matter contents reported in soils 0.55% . The pH of the mine tailings sample was determined by using 1:2.5 w/v mine tailings with 0.01 M CaCl 2. Measurements were carried out after

CONTROL OF ACID ROCK DRAINAGE FROM MINE

CONTROL OF ACID ROCK DRAINAGE FROM MINE TAILINGS THROUGH THE ADDITION OF DISSOLVED ORGANIC CARBON by Paul John Sturman A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Engineering MONTANA STATE UNIVERSITY Bozeman, Montana November 2004

Specialised Tailings TestingATC Williams

Specialised Tailings Testing.From our laboratory base ATC Williams can also provide a field sampling and testing service. This service includes compaction control via a Nuclear Density Meter, Sand Replacement or Water Replacement, Field sampling of tailings by slurry piston sampler and Field permeability testing.

TailingsWikipedia

Tailings ponds can also be a source of acid drainage, leading to the need for permanent monitoring and treatment of water passing through the tailings dam; the cost of mine cleanup has typically been 10 times that of mining industry estimates when acid drainage was involved.

Vertical Distribution of Soil Bulk Density, SOC and Soil

Jun 21, 2019· 4.1 Variation of soil bulk density, organic carbon and pH with soil depths at Trojan Nickel mine tailings dumps in Bindura, Zimbabwe The mean soil bulk densities and pH on nickel mine tailings dumps did not differ p > 0.05 with soil depths whereas soil organic carbon contents varied significantly p < 0.05 with soil depths Table 1.

Suitability of an organic residual cover on tailings for

Jan 01, 2012· To test the potential for production of bioenergy crops, such as canola and corn, an organic cover was constructed over acidproducing mine tailings containing nickel and copper, belonging to Vale in Sudbury, Ontario, Canada. The 1 m deep cover was of organic residuals biosolids obtained from a regional paper mill.

Submerged Mine Tailings Metal Dissolution

Batch Test Equipment and Method. In one series, 2 kg of lead mine A tailings were slurried with 2 L of deionized water and poured into a 4L, widemouth, polyethylene bottle. An additional 1.5 L of deionized water was added to each of seven identical samples, yielding a solidtoliquid ratio of 0.57.

LEACHING OF FLOTATION TAILINGSUniverzitet u Zenici

participation of oxide copper forms regarding to the total copper content of the flotation tailings. Mine waste water from the accumulation Robule were used as leaching solution with pH correction, what is a special contribution to solving the environmental problems using the integrated treatment of mine wastewater and tailings.

Recycling and Utilization of Mine Tailings as Construction

Recycling and Utilization of Mine Tailings as Construction Material through Geopolymerization Lianyang Zhang, Ph.D., P.E. Department of Civil Engineering and Engineering Mechanics University of Arizona, Tucson, Arizona U.S. EPA Hardrock Mining Conference 2012: Advancing Solutions for a New Legacy April 35, 2012, Denver, Colorado

Geochemical Evaluation of Cemented Paste Tailings in a

Mine Site and Tailings . A western US mine proposed to use cemented paste tailings as fill for primary and secondary stopes in their underground mining sequence. Tailings to be used as backfill are from an oxidized carbonatehosted Carlin style deposit. Tailings have low levels of pyritic sulfur but are alkaline in pH

An Assessment of Radiological Hazards from Gold Mine

Jan 18, 2016· The basin has led to a legacy of some 400 km 2 of mine tailings dams 270 tailings dams and 380 mine residue dumps containing 6 billion tonnes of pyrite tailings and 600,000 tonnes of lowgrade uranium . The gold mining area studied has 5 mine tailings that have been accumulated throughout the operating history of the mine.

Remediating mine tailings and recovering goldMining

Tailings.info Water Management Considerations for

A rotational slip occurred causing tailings from the upper impoundment to inundate the lower impoundment which eventually overtopped and failed Davies 2001. Tailings escaped down the hillside engulfing the town of Stava claiming the lives of 269 people. Stava remains as one of the worlds worst tailings disasters in terms of loss of human life.

NEUTRALIZING AMENDMENTS AND RATES OF

NEUTRALIZING AMENDMENTS AND RATES OF APPLICATION Principles and Practices Mine tailings exhibiting elevated metal concentrations and residual sulfide minerals are a significant environmental problem in the Western U.S. and around theis desired in the limeamended mine waste. Bulk pH will naturally fall from the 1012

Recycling and Utilization of Mine Tailings as Construction

Recycling and Utilization of Mine Tailings as Construction Material through Geopolymerization Lianyang Zhang, Ph.D., P.E. Department of Civil Engineering and Engineering Mechanics University of Arizona, Tucson, Arizona U.S. EPA Hardrock Mining Conference 2012: Advancing Solutions for a New Legacy April 35, 2012, Denver, Colorado

Geochemical Evaluation of Cemented Paste Tailings in a

Mine Site and Tailings . A western US mine proposed to use cemented paste tailings as fill for primary and secondary stopes in their underground mining sequence. Tailings to be used as backfill are from an oxidized carbonatehosted Carlin style deposit. Tailings have low levels of pyritic sulfur but are alkaline in pH

PDF Filtered Dry Stacked TailingsThe Fundamentals

Mine tailings are often stored underwater behind earthen dams; this is effective in the short term, but failure of these structures typically causes significant environmental damage.

Accelerated Weathering of BiosolidAmended Copper Mine

MATERIALS AND METHODS the City of Phoenix 27th Avenue wastewater treatment plant and had a pH of 8.1. Total N 44 g kg 11, C 246 g kg , S. Tailings and Biosolids 24 g kg 1 and metal concentrations in the biosolids were Copper mine tailings were obtained from a mine in south

Leachability of Arsenic and Heavy Metals from Mine

Nov 17, 2009· To select a solution between #1 and #2, pH of the mine tailings was measured by shaking 5g of mine tailings with 96.5 mL for 5 min. Then, if pH of the solution is <5.0, fluid #1 is selected, otherwise following additional step is needed: the solution is acidified with 3.5 mL of 1 N HCl and heated at 50°C for 10 min.

TESTING A STANDARD TEST METHOD FOR LABORATORY

TESTING A STANDARD TEST METHOD FOR LABORATORY WEATHERING ON SULPHIDE CONTAINING MINE TAILINGS Carla Ardau1, David W. Blowes2 and Carol J. Ptacek2 1Department of Earth Sciences, University of Cagliari, Via Trentino 51, 09127 Cagliari, Italy 2Department of Earth Sciences, University of Waterloo, Waterloo, Ontario, N2L 3G1 Canada Abstract A Standard Test

In Situ E Amendments to Stabilize Oxidized AcidGenerating

Eagle/Telbel mine site, which is now referred to as Joutel mine. The main objective of this study was to test the in situ e ectiveness of these materials to stabilize acidgenerating tailings.

Mine TailingsGround Truth Trekking

Mine tailings are the ore waste of mines, and are typically a mudlike material. Worldwide, the storage and handling of tailings is a major environmental issue. Many tailings are toxic and must be kept perpetualy isolated from the environment. Scale of tailings production is immense, since metal extraction is usually only ounces or pounds, for