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microbes found ongold mine tailngs dump

The metagenome of a microbial community of the sediments from a highly acidic iron-rich puddle at thetailings dumpof the Komsomolskaya goldminein the Kuzbass area, Siberia, Russia, was sequenced. Binning of contigs yielded a near-complete genome of the dominant bacterium, representing a novel deep lineage of Deltaproteobacteria .

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  • Gauteng’sminedumps brimming with radioactive uranium
    Gauteng’sminedumps brimming with radioactive uranium

    Oct 15, 2015· The 400km 2 of bright yellowminedumps scattered around the province are laden with 600,000 tons of the radioactive heavy metal uranium, inadvertently excavated through goldminingprocesses over the last century. “Gold and uranium occur in the same geological environment and with goldmining, uranium is often also brought to the surface,” explains Professor Frank Winde, a North …

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  • (PDF) Quantitative Microbial Community Analysis of Three
    (PDF) Quantitative Microbial Community Analysis of Three

    v ol. 74, 2008 microbial community analysis inmine tailings5215 In the tailingdumpin Germany, microbial growth and the formation of cemented layers were probably favored by the

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  • Converting Tailings Dumps into Mineral Resources | Energy
    Converting Tailings Dumps into Mineral Resources | Energy

    The model is created to demonstrate the distribution of grade throughout atailings dumpand to also verify the bulk volume using the survey data produced by surveyors. Knowing the deposition history of atailings dumpand, possibly, past process plant efficiencies, gives an idea of what to expect in terms of mineralogy and metals of interest.

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  • Metagenome scale analysis yields insights into the
    Metagenome scale analysis yields insights into the

    Jan 19, 2016· The microbial communities inmine tailingshave attracted considerable interest, and there are many relevant microbiological researches ofmine tailings, most of which have been performed in the last decade [1, 2].Previous cultivation-dependent studies ofmine tailingsin several countries have revealed a numerical dominance ofBacteriaover Archaea.

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  • Metal Mobilization by Iron  and Sulfur OxidizingBacteria
    Metal Mobilization by Iron and Sulfur OxidizingBacteria

    The marine shore sulfidicmine tailings dumpat the Chañaral Bay in the Atacama Desert, northern Chile, is characterized by extreme acidity, high salinity, and high heavy metals concentrations. Due to pyrite oxidation, metals (especially copper) are mobilized under acidic conditions and transported toward thetailingssurface and precipitate as secondary minerals (Dold, Environ. Sci. Technol ...

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  • GoldTailings: Hazards and Opportunities | INN
    GoldTailings: Hazards and Opportunities | INN

    This article was first publishedon GoldInvesting News on August 2, 2011.Tailingsfrom goldminingoperations can pose a threat to the environment and health of nearby communities.

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  • TailingsDams: WhereMiningWaste is Stored Forever
    TailingsDams: WhereMiningWaste is Stored Forever

    Jul 30, 2012· Stava, Italy: In 1985,tailingsdams built to store waste from flouriteminingfailed due to poor design and extreme water pressure. Two hundred thousand cubic meters (186,462 cubic miles) of ...

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  • Determining the radon exhalation rate from a goldmine
    Determining the radon exhalation rate from a goldmine

    Feb 01, 2015· Obtain radon flux from a large area such as amine dump. • Find 226 Ra activity concentration in themine dumpusing highly efficient gamma ray detector. • Use gamma radiation to infer flux rather than cumbersome radon flux apparatus. • Flux measurements of around 0.1 Bq m −2 s −1 were obtained for amine tailings dump.

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  • Biodiversity, abundance, and activity of nitrogen fixing
    Biodiversity, abundance, and activity of nitrogen fixing

    The country rock of the Cu ore body in this area is mainly comprised of carbonatite (carbonate rock). The tailings dump was in operation for about 30 years and has been left abandoned since 1990, occupying an area of about 20 ha (Sun et al., ). Gradually, natural biological colonization (of microbes, biotic crusts, and pioneer plants) of substrates takes place, displaying a sparse distribution in the early stage of …

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  • (PDF) Quantitative Microbial Community Analysis of Three
    (PDF) Quantitative Microbial Community Analysis of Three

    Themicrobialcommunities of three different sulfidic andacidic mine waste tailing dumpslocated in Botswana, Germany, and Sweden were quantitatively analyzed using quantitative real-time PCR...

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  • Couldmicrobeshelp remediate abandoned gold mines
    Couldmicrobeshelp remediate abandoned gold mines

    Dr. Campbell, a noted environmental containment specialist, will explore whethermicrobes foundin and around the lakes and wetlands impacted by 100-year oldtailingscould be the key to reducing toxic levels of mercury and arsenic. (The idea being that somemicrobesare natural remediation (clean-up) specialists in that they can detoxify heavy ...

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  • IJERPH | Free Full Text | Heavy Metal Pollution from Gold
    IJERPH | Free Full Text | Heavy Metal Pollution from Gold

    Miningactivities can lead to the generation of large quantities of heavy metal laden wastes which are released in an uncontrolled manner, causing widespread contamination of the ecosystem. Though some heavy metals classified as essential are important for normal life physiological processes, higher concentrations above stipulated levels have deleterious effects on human health and biota.

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  • Metagenome Sequence of a Microbial Community from the Gold
    Metagenome Sequence of a Microbial Community from the Gold

    The metagenome of a microbial community of the sediments from a highly acidic iron-rich puddle at thetailings dumpof the Komsomolskaya goldminein the Kuzbass area, Siberia, Russia, was sequenced. Binning of contigs yielded a near-complete genome of the dominant bacterium, representing a novel deep lineage of Deltaproteobacteria.

    Get Price
  • Mining:Bacteriawith Midas touch for efficient gold
    Mining:Bacteriawith Midas touch for efficient gold

    Apr 28, 2017· Special 'nugget-producing'bacteriamay hold the key to more efficient processing of gold ore,mine tailingsand recycled electronics, as well as aid in exploration for new deposits, research has ...

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  • Variation in rhizosphere microbiota correlates with
    Variation in rhizosphere microbiota correlates with

    Oct 01, 2019· Li et al. (2015b) alsofoundthatorganotrophic microorganismswere significantly enriched (Li et al., 2015b) and iron- and sulfur-oxidizing bacteria (especially Leptospirillum and Acidithiobacillus) were less abundant in revegetatedtailingcompared with baretailingsafter 3 years of phytostabilization (Li et al., 2016). These studies have provided a way to understand rhizospheremicrobiomesintailing dumps.

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  • Quantitative Microbial Community Analysis of Three
    Quantitative Microbial Community Analysis of Three

    Sulfate-reducing Bacteria, e.g., Desulfosarcina spp. and Desulfotomaculum spp., were regularly detected in sulfidicmine tailings(3, 7, 13, 17, 18, 64). These anaerobic and presumably neutrophilic Bacteria might be protected by microenvironments from acidity and oxygen, or they are able to removeoxygenby active respiration ( 32 ).

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  • Correlating Microbial Diversity Patterns with Geochemistry
    Correlating Microbial Diversity Patterns with Geochemistry

    It should be pointed out that the progressive changes in geochemistry in the mine tailings resulted largely from metabolic activities of the wide array of microbes detected, in particular, those capable of iron and sulfur oxidization.

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  • FromTailingsto Treasure? Miners Make    Advancing Mining
    FromTailingsto Treasure? Miners Make Advancing Mining

    New technology allows it to recover up to 40% of the gold left in particle form intailings. DRD Gold extracted 33,600 ounces of gold, worth nearly US$40 million, in the last quarter of 2013. Mintails, amine tailingsprocessor, has developed new technology to process 350,000 tons of slimes from its extensivetailingsresources.

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  • Tailings  Earthworks
    Tailings Earthworks

    In 2012, Earthworks and MiningWatch Canada released a report, Troubled Waters, whichfoundthat each year,miningcompaniesdumpover 180 million tonnes of these hazardousminewastes into water bodies — more than 1.5 times the amount of waste that US cities send to landfills each year.

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  • Metal Mobilization by Iron  and Sulfur Oxidizing Bacteria
    Metal Mobilization by Iron and Sulfur Oxidizing Bacteria

    Feb 15, 2013· Acidophilic chemolithoautotrophic iron(II)-oxidizing bacteriawere also frequently found via most-probable-... Metal Mobilization by Iron- and Sulfur-Oxidizing Bacteria in a Multiple ExtremeMine Tailingsin the Atacama Desert, Chile - Environmental Science & Technology (ACS Publications)

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  • The Toxic Landscape of Johannesburg's Gold Mines | WIRED
    The Toxic Landscape of Johannesburg's Gold Mines | WIRED

    More than a century of goldmininghas left towering piles of bleachedminewaste, known as "tailings," all over Johannesburg's landscape. Discovery of gold in the region in 1886 led to the ...

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  • New metalloid oxide reducing bacteria found in manitoba's
    New metalloid oxide reducing bacteria found in manitoba's

    New metalloid oxide reducingbacteria foundin manitoba's nopiming goldmine tailingsby Canadian Science Publishing (NRC Research Press) Images from right: sites ofbacteriasampling.

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  • Bacterial communities associated with a mineral weathering
    Bacterial communities associated with a mineral weathering

    Acidophilic S and Fe oxidizing bacteria, such as Thiobacillus sp. and Acidithiobacillus sp., have been isolated frommine tailings(Baker and Banfield 2003; Wakelin et al. 2012). Theoxidationof...

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