Is mining in headwaters worth the risk? - Medicine Hat ...

    Aug 15, 2020 · Toxic effects of selenium on aquatic life, fish and birds have been documented in the mountaintop coal-mining regions of the Appalachians and more recently the Elk Valley of B.C., extending up to ...

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    Coal mine water - Canadian Mining JournalCanadian Mining ...

    The Selenium (VI) is much harder to remove, and is the primary threat to water quality in the coal mining industry today. Today's Treatment Technology According to Jacques Groenewald, Senior Geoscientist with Summit Environmental, Vancouver, one of the most effective ways to mitigate the effects of coal mining is to avoid creating the problem ...

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    Risk management approach for Selenium and its compounds ...

    5.2.1 Coal mining. As of November, 2016, 8 coal mining facilities reported releases to the NPRI of 13 360 kg of selenium to water in 2014. These facilities also reported the on-site disposal of 28 802 kg of selenium; this data includes selenium contained in tailing products and coarse coal rejects (National Pollutant Release Inventory, 2014).

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    Mine Drainage Technology Initiative - Office of Surface Mining

    Selenium discharges that exceed water quality standards have been identified in several coal mine watersheds in southern West ia. It is suspected that these Se concentrations are the result of leaching of selenium compounds in coal and overburden exposed to oxidizing conditions during mining activities in this region.

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    Stream pollution from mountaintop mining doesn't stay put ...

    Apr 07, 2020 · Since the 1980s, a sprawling mountaintop removal mining complex in southern West ia has been leaching pollutants—such as selenium—into nearby streams at .

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    Minerals | Free Full-Text | Mining-Related Selenium ...

    The mining of coal, precious metals (gold and silver), and metallic sulfides are key contributors of selenium from mining operations . According to an annual coal report presented by the US Energy Information Administration, the annual coal production for 2015 was about 896 million short tons, which was used for electric power generation [ 8 ].

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    Selenium - Wikipedia

    Selenium pollution of waterways also occurs when selenium is leached from coal flue ash, mining and metal smelting, crude oil processing, and landfill. The resultant high selenium levels in waterways were found to cause congenital disorders in oviparous species, including wetland birds [114] and fish. [115]

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    Coal Mining Threat - livingstonelandowners

    Mountain top coal mining is extremely invasive, stripping the soil, vegetation and rock from thousands of hectares of land, dumping the waste rock into the valleys, leaching toxins into natural waterways and destroying or severely disrupting native wildlife. ... Selenium Poisoning. Release of elements like selenium .

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    Aquatic hazard of selenium pollution from. | Publications ...

    Authors: Lemly, Dennis A. Publication Year: 2009 Publication Series: Book Source: Book Chapter In: In: Fosdyke, Gerald B. ed. Coal Mining: Research, Technology and Safety. Abstract. Selenium is a chemical element that is found in coal in small amounts. The potential for environmental problems begins when coal-bearing strata are exposed to air and water during the mining process, and when coal ...

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    Coal mining pollutes water and destroys our environment ...

    Jul 25, 2020 · Home » Coal mining pollutes water and destroys our environment. ... Selenium levels in the Upper Fording River resulted in it being closed to anglers. A couple years ago, water tests throughout the Elk Valley found selenium levels at 50-70 parts/billion and in some cases higher than 100 parts/billion.

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    Basic Information about Surface Coal Mining in Appalachia ...

    selenium concentrations are elevated, reaching concentrations that have caused toxic effects in fish and birds, and macroinvertebrate and fish communities are consistently degraded. In addition, mountaintop mining and valley fills can lead to large-scale landscape changes:

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    Selenium - Canada.ca

    Safety of selenium. Selenium is an essential nutrient for human health. Most Canadians get the selenium they need from following a healthy eating pattern. We assessed the potential health and environmental risks of selenium through a chemical risk assessment. We found that fish caught near mining operations may have higher selenium levels.

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    Coal mining pollutes water and destroys our environment ...

    Jul 25, 2020 · Home » Coal mining pollutes water and destroys our environment. ... Selenium levels in the Upper Fording River resulted in it being closed to anglers. A couple years ago, water tests throughout the Elk Valley found selenium levels at 50-70 parts/billion and in .

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    Teck Proposes Huge Coal Mine Expansion | Fernie

    – The project would continue coal mining in the Elk Valley for many decades, releasing more than 20 million tonnes of carbon over the life of the mine and more than 20 million tonnes every year when the coal is burned, equal to a third of BC's current annual emissions, even though we desperately need to reduce carbon emissions.

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    Selenium Water Treatment - Envirogen Technologies

    The most highly effective selenium water treatment for applications ranging from coal and metals mining, refining, power generation, agriculture and more is accomplished using our patented fluidized bed bioreactor technology (FBR) technology. The FBR offers 'best in class' performance in the coal mining industry for larger outfalls. This process has been shown to cost-effectively remove ...

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    Mining company reduce Selenium in wastewater

    Mining operations that are already removing selenium from wastewater will likely have to upgrade their treatment systems to achieve such low discharge limits, and other mining operations will need to add a new process to their existing wastewater treatment system.

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    Koocanusa Exceeds Selenium Standard - Elk Valley Coal News

    Selenium is a naturally occurring element in sedimentary rocks and coal and can be toxic to fish at elevated levels, which are exacerbated by mining operations and the accumulation of waste rock, according to the EPA.

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    Mines blamed for high selenium levels in B.C.'s Elk River ...

    Jul 26, 2013 · A U.S. study has linked coal mining in the Elk River in southeast British Columbia to high levels of selenium, and that has prompted the B.C. government to order the mining .

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    Mining industry, environmental groups watch as Canada ...

    Environment Canada continues to focus on selenium, an element released into the environment by coal mining. It has been found to accumulate in fish and harm reproduction.

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    For decades B.C. failed to address selenium pollution in ...

    Dec 04, 2018 · Selenium is often found in coal rich deposits like those underlying much of the Elk Valley, where Teck Resources owns and operates five sprawling metallurgical coal mines. To get at those blackened seams, Teck employs a technique known as cross-valley fill, a bucolic euphemism for mountaintop removal mining.

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    West ia's streams are in trouble – Appalachian ...

    Selenium pollution occurs when coal seams with high selenium levels are mined, exposing the once-buried selenium to surface run-off. Once the selenium is exposed, U.S. Forest Service biologist A. Dennis Lemly, author of an important 2008 report selenium, believes expensive pollution treatment will be required in perpetuity.

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