EHS for Mining Articles

  • Cut-Off Wall - Abandoned Mine Tailings Pond - Case Study

    Problem At an abandoned mine in the Yukon Territory, mining for both Gold and Zinc took place until the mid 1950's, with the processing of the ore taking place on the banks of an adjacent lake. Processing methods resulted in the creation of a large mine tailings pond that had high concentrations of iron, arsenic, zinc and lead. Spring runoff and summer rainfall then infiltrated through ...


    By C3 Environmental Limited

  • Protecting against cross-contamination

    Protecting product from cross-contamination is critical, especially when it comes to seed and pulse crops. Your conveyance is where the risk for contamination is usually at its highest. This necessitates constant clean-out measures that take up valuable time and are less than cost-effective. Here at Norstar, we believe that chain conveyance provides a well-balanced solution to the issue of ...


    By Norstar Industries

  • Migration and speciation of heavy metal in salinized mine tailings affected by iron mining

    The negative effects of heavy metals have aroused much attention due to their high toxicity to human beings. Migration and transformation trend of heavy metals have a close relationship with soil safety. Researching on migration and transformation of heavy metals in tailings can provide a reliable basis for pollution management and ecosystem restoration. Heavy metal speciation plays an ...


    By IWA Publishing

  • Iron removal in highly contaminated acid mine drainage using passive biochemical reactors

    Passive biochemical reactors (PBRs) are a viable alternative to neutralization plants for the treatment of acid mine drainage (AMD) because they require lower investment costs and use residual materials. However, high iron (Fe) concentrations (≥0.5 g/L) in AMD are challenging for their long-term efficiency. Sorption and precipitation are the main Fe removal mechanisms, but the relative ...


    By IWA Publishing

  • US Military’s First Choice for Dust Control Solutions – Rhino Snot (Envirotac II)

    Home soil or foreign, whenever the US Military is in need of a dust control job, they call EP&A Envirotac Inc. without a second thought. The US Military first came to know about Envirotac’s dust control products during its Afghanistan mission in 2002, where it used Envirotac II polymer for helicopter landing site and airfields in the Camp Rhino. This is also ...


    By EP&A Envirotac

  • The economic pre-treatment of coal mine drainage water with caustic and ozone

    Coal mine drainage waters are low in pH with varying amounts of iron and manganese and are generally brackish. The Austar Coal Mine in NSW, Australia, sought alternatives to their current lime dosing as the pre-treatment before the downstream reverse osmosis plant. Undesirable operating aspects of the current system include manganese and gypsum scaling/fouling, the need for anti-scalants and ...


    By IWA Publishing

  • Tailing propensity in the ultraviolet disinfection of trickling filter and activated sludge wastewater treatment processes

    In this paper, the effect of suspended flocs on the tailing of ultraviolet (UV) disinfection kinetics of secondary effluents was examined. To achieve this goal, final effluents produced in two processes for treating wastewater; namely, a trickling filter system and an activated sludge system, were collected and their UV disinfection were compared. Tailing of the UV dose response curve was ...


    By IWA Publishing

  • Cost Effective Dust Control Products for Road Construction by Envirotac

    The longevity and cost-effectiveness of Envirotac’s dust control products make them useful for various applications in many industries. Envirotac line of products are used across the globe for various jobs either it soil stabilization for road construction or constructing runways, parking lots, mining etc. Envirotac  CEO John Vermillion was awarded key to ...


    By EP&A Envirotac

  • Erosion Protection of Steep Cut Slopes - Case Study

    In May of 1995, 70,000 sf of large-cell (GW40V) GEOWEB® slope protection system was utilized on Phase II of the Cyprus Miami Open-Pit Mine to stabilize the cut slopes upon completion of copper extraction at the site. Aggregate available on site was used to infill the GEOWEB 3D structure and provide erosion resistance and slope-surface stability on slopes with 70-ft. slope lengths, and as ...


    By Presto Geosystems

  • Analysis of mine water from four decommissioned pits in south-western Ghana – implications for remediation programmes for mine closure

    Research into water quality status of accumulated water in decommissioned pits is a grey area in Ghana and could be of significant benefit in the effectiveness of remediation of pits after mining. Water sampled from four decommissioned pits in Amansie West District were analysed for their water quality status. Seasonal variations of physico-chemical parameters for determining water quality ...


    By IWA Publishing

  • Seasonal variation of microbial community for the treatment of tail water in constructed wetland

    Effects of seasons and hydraulic loading rates (HLR) on the treatment performance and the response of the microbial community of vertical flow constructed wetland treating tail water were investigated. The seasonal treatment performance was evaluated at four HLR of 125, 250, 375 and 500 mm/d, respectively. The microbial community was detected by MiSeq Illumina platform at HLR 125 and 375 mm/d. ...


    By IWA Publishing

  • Hydrochemical characterization of a river affected by acid mine drainage in the Iberian Pyrite Belt

    This paper addresses the modelling of the processes associated with acid mine drainage affecting the Trimpancho River basin, chosen for this purpose because of its location and paradigmatic hydrological, geological, mining and environmental contexts. By using physical-chemical indicators it is possible to define the contamination degree of the system from the perspective of an entire river ...


    By IWA Publishing

  • Long-term impacts of deep-sea mineral mining

    A new international study has demonstrated that deep-sea nodule mining will cause long-lasting damage to deep-sea life. This study, led by scientists at the National Oceanography Centre (NOC), was the first to review all the available information on the impacts of small-scale sea-floor disturbances simulating mining activity. It found clear impacts on marine ecosystems from deep-sea nodule mining ...

  • Researchers date ancient water deep beneath earth’s surface

    When a pocket of ancient water was discovered deep beneath the Earth in 2013, a team of Canadian researchers estimated it to be roughly 1.5 billion years old. At the same site, they discovered a deeper pocket of water estimated to be at least 2 billion years old, making it the oldest water on the planet. Barbara Sherwood Lollar, a University of Toronto professor who led the team that discovered ...


    By Fluence Corporation

  • Integrated treatment of acid mine drainage using cryptocrystalline magnesite and barium chloride

    This study endeavours to report the efficiency of a hybrid approach in the treatment of acid mine drainage. Cryptocrystalline magnesite was used to pre-treat acid mine drainage and barium chloride was used to remove the residual sulphate through the formation of barium sulphate. Batch experimental approach was adopted and the documented optimum conditions for both cryptocrystalline magnesite ...


    By IWA Publishing

  • Case study - Polyphosphates for in situ uranium immobilization

    INFORMATION Carus Corporation has a long history of developing and providing a variety of permanganate products for chemical oxidation applications. Carus is also a leading provider of phosphate products for sequestration and corrosion control. Phosphates are widely used as water treatment chemicals (dry or liquid solutions) to correct problems resulting from inorganic groundwater ...


    By Carus Corporation

  • Passive neutralization of acid mine drainage using basic oxygen furnace slag as neutralization material: experimental and modelling

    This study investigated passive neutralization of acid mine drainage using basic oxygen furnace slag as neutralization material over 90 days, with monitoring of the parameters' quality and assessment of their removal kinetics. The quality was observed to significantly improve over time with most parameters removed from the influent during the first 10 days. In this regard, removal of acidity, ...


    By IWA Publishing

  • Membrane technology applied to acid mine drainage from copper mining

    The objective of this study is to evaluate the treatment of high-strength acid mine drainage (AMD) from copper mining by nanofiltration (NF) and reverse osmosis (RO) at pilot scale. The performances of two commercial spiral-wound membranes – NF99 and RO98pHt, both from Alfa Laval – were compared. The effects of pressure and feed flow on ion rejection and permeate flux were evaluated. The ...


    By IWA Publishing

  • Veolia Water Technologies Botswana: Tailored solutions for treating mine water

    Veolia, the world's largest water services company, offers the complete A to Z of mine water treatment for mining applications in Botswana. We're helping mines refine minerals, reduce waste, limit pollution and drive maximum profitability to their operation. Our solutions for mine water treatment include: Tailings pond water treatment for reuse or discharge Containerised ...


  • With Minestis, optimize the way you achieve mineral resource estimation

    Minestis users appreciate the quality of the geostatistics implemented, the ease of use of the software and the innovative tools it offers. Try it today! >> Want to challenge Minestis with your own data? Contact us now! MINESTIS KEY ...


    By Geovariances

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