• Huge Upper Peninsula mine OK'd despite major concerns

    Aug 13, 2019· The open-pit sulfide mine would operate on 83 acres and its pit would be 2,000 feet by 2,500 feet, and 750 feet deep, according to the company.

  • sulfide mining in michigan torch lake MC World

    Mining, particularly sulfide mining, presents certain unavoidable ecological risks. Take for example the case of Torch Lake, in Michigan's upper peninsula, where copper was mined between the 1860's and the 1960's. Waste from the mining process was dumped into Torch Lake or onto its shoreline. Most of the lake's western shore and twenty percent

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  • GLIFWC

    Mining, particularly sulfide mining, presents certain unavoidable ecological risks. Take for example the case of Torch Lake, in Michigan's upper peninsula, where copper was mined between the 1860's and the 1960's. Waste from the mining process was dumped into Torch Lake or onto its shoreline. Most of the lake's western shore and twenty percent

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  • METALS IN AND AROUND TORCH LAKE: WHAT’S THE STORY

    Feb 16, 2019· METALS IN TORCH LAKE — ARE THEY A CONCERN Yes. The mining industry processed many tons of metal-rich ore and also left behind metal-rich materials that are potentially harmful to both humans and wildlife. Some of the lasting impacts include: • Copper, the most abundant metal around Torch Lake, can be toxic to humans, but is more harmful to

  • Sulfide Mining in Michigan's U.P. Great Lakes

    Sulfide Mining and Sulfuric Acid Mine Drainage in Michigan's Upper Peninsula. New mining ventures in Michigan's Upper Peninsula could drastically alter the character and environmental health of this area. A Vancouver, Canada, company has bought mineral rights in Michigan U.P. counties and is exploring for Nickel/Copper/Gold/Zinc and other minerals.

  • Torch Lake Michigan Technological University

    Torch Lake was the tailings pond for both the C&H mines in Calumet and the Quincy Mine in Hancock, the two largest mines in the whole district. A significant fraction of the entire volume of the lake was filled with stand sands and other mining wastes. This period

  • Sediment Toxicity from Copper in the Torch Lake (MI) Great

    Jan 01, 1999· Torch Lake (MI) is a Federal Superfund Site and a Great Lakes Area of Concern. and copper carbonate has a solu- bility of about 250 mg/L. Sulfide precipitates would be stable as well. However, in the Keweenaw waterway has shown the copper-to-AVS (acid volatile sulfide) ratio is generally greater than 100 meaning that sulfides are not

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  • Torch Lake Superfund Site and Surrounding Areas Michigan

    Michigan’s Upper Peninsula (see map on back page). The Torch Lake Superfund Site is a large, complex site dealing mostly with stampsands left behind from historical copper mining activities. The Site and its surrounding areas include, but are not limited to, Lake Linden, Hubbell/Tamarck City, Mason, Point Mills and Isle-Royale.

  • Torch Lake AOC Great Lakes Areas of Concern US EPA

    Immediate environs are those areas along the shore of Torch Lake where wastes from the production of copper contributed directly to the contaminant loadings of Torch Lake. Mining of the native copper found in the region's bedrock formations began during the 1840s and continued until 1968, when all mining related operations ceased.

  • Torch Lake is a cautionary tale of what happens when

    Mar 24, 2016· Of all the Areas of Concern in the Upper Peninsula, it is the Keweenaw's Torch Lake that has suffered the most at the hands of industry and mining. The lake, on which the towns of Lake Linden and Hubbell are situated, was the site of multiple mining operations and copper processing industry all the way through the mid-20th century.

  • Cleanup of abandoned mining waste in the Keweenaw

    1 天前· Cleanup of abandoned mining waste in the Keweenaw Peninsula making great progress EGLE’s Abandoned Mine Waste project focuses on mining-era wastes historically discarded in or near Torch Lake

  • Torch Lake suffers algae outbreak The Mining Journal

    CENTRAL LAKE (AP) — A northern Michigan lake that’s famous for its turquoise waters is facing an outbreak of brown algae that’s left its sandy bottom covered with mushy, squishy mats. Rick

  • METALS IN AND AROUND TORCH LAKE: WHAT’S THE STORY

    Feb 16, 2019· METALS IN TORCH LAKE — ARE THEY A CONCERN Yes. The mining industry processed many tons of metal-rich ore and also left behind metal-rich materials that are potentially harmful to both humans and wildlife. Some of the lasting impacts include: • Copper, the most abundant metal around Torch Lake, can be toxic to humans, but is more harmful to

  • Sulfide Mining in Michigan's U.P. Great Lakes

    Sulfide Mining and Sulfuric Acid Mine Drainage in Michigan's Upper Peninsula. New mining ventures in Michigan's Upper Peninsula could drastically alter the character and environmental health of this area. A Vancouver, Canada, company has bought mineral rights in Michigan U.P. counties and is exploring for Nickel/Copper/Gold/Zinc and other minerals.

  • Torch Lake Sands Michigan Technological University

    Torch Lake was the tailings pond for both the C&H mines in Calumet and the Quincy Mine in Hancock, the two largest mines in the whole district. A significant fraction of the entire volume of the lake was filled with stand sands and other mining wastes. This period

  • Sediment Toxicity from Copper in the Torch Lake (MI) Great

    Jan 01, 1999· Torch Lake (MI) is a Federal Superfund Site and a Great Lakes Area of Concern. and copper carbonate has a solu- bility of about 250 mg/L. Sulfide precipitates would be stable as well. However, in the Keweenaw waterway has shown the copper-to-AVS (acid volatile sulfide) ratio is generally greater than 100 meaning that sulfides are not

  • Undetermined PCB source in Torch Lake The Mining Gazette

    TORCH LAKE — Although cleanup has taken place on several sites, the toxic legacy of the copper-mining era in the Copper Country is still an issue in some locations, including Torch Lake. The Torch Lake Superfund Site was created by the federal Environmental Protection Agency in 1986, and recently some of the areas of concern in the site have been delisted, such as the Quincy Smelting Works

  • Torch Lake Area of Concern IA Michigan Sea Grant

    In 2012, Michigan Sea Grant funded a Michigan Technological University research team to conduct an integrated assessment of the Torch Lake AOC, a site which includes Torch Lake and its watershed. This is a challenging site to investigate because of conflicting information on the success of remediation efforts and the remaining problems on site.