• An examination of I Arbertor National eview I

    problem, the vermiculite ore from the Libby mine was contaminated with asbestos. Studies have shown that people who worked in the mine and processing facilities and people who lived in the community were exposed to asbestoscontaminated vermiculite during the time the facilities were in operation. Prolonged exposure to asbestos can cause very serious health problems, including asbestosis and ...

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  • Vermiculite Data Sheet

    VERMICULITE (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: Two companies with mining and processing facilities in South Carolina and ia produced approximately 200,000 tons of vermiculite concentrate, but actual data have been rounded to one significant digit to avoid disclosing company proprietary data. Flakes of raw vermiculite concentrate .

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  • Miners and Asbestos Exposure | Tremolite Asbestos in Mines

    The mine provided at least 80 percent of the world's supply of vermiculite. In one estimate, the ore was sent to more than 60 processing plants in the United States and Canada, where workers became ill with lungrelated diseases (Seattle Post–Intelligencer, December 22, 1999). Many workers in the Zonolite mine were stricken with asbestosrelated diseases. Preliminary health screening tests ...

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  • Vermiculite Mining Ltd.

     · Vermiculite Mining Ltd. (hereinafter abbreviated to "Vermmining"), established on March 1989 with the approval of the Chinese government, is a professional mining company headquartered in hebei China, it has holding subsidiary factories specialized in processing of mineral and industry materials, such as vermiculite, mica, calcite, perlite, etc.

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  • Grace Exfoliation Facility

    Raw vermiculite ore from Libby, Montana, is estimated to contain up to 21–26% fibrous asbestos (MRI 1982). During mining and processing operations, asbestos fibers released into the ambient air, that is, the air in and around the mining companies' facilities. Consequently, many workers were exposed to high levels of asbestosfiber concentrations. ATSDR health screening activities and other ...

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  • Palabora Mine (Foscor open pit; PMC mine), Phalaborwa ...

    A copper(U)(Zr)apatitevermiculite mine loed near Phalaborwa in Limpopo Province (previously NE Transvaal). Apatite production occurred . Vermiculite production began in 1946. Copper mining commenced in 1965 and was fully operational by 1967. The town name is Phalaborwa, the geological formation is the Phalaborwa Complex and the mine Palabora mine. Ore is in the .

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  • Vermiculite Mine Photos

    Your Vermiculite Mine stock images are ready. Download all free or royaltyfree photos and vectors. Use them in commercial designs under lifetime, perpetual ...

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  • Clearing the Smoke

     · The vermiculite mining operation, which by some estimates accounted for 80 percent of the world's sup ply of the ore, ran from 1919 until 1990, and employed a sig nificant segment of Libby's residents. When the mine closed, Libby's economy faltered, and by 2000, percent of Libby residents lived below the poverty line; for Lincoln County as a whole, the number was percent ...

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  • Health Consultation Zonolite/ Grace Site

    In the 1920s, the Zonolite Company was formed and began mining vermiculite ore in Libby, Montana. Later sold to the Grace Company, the mine was finally closed in 1990. While in operation, the vermiculite mine in Libby may have produced 80% of the world's supply of vermiculite. Not all vermiculite contains asbestos, and it is still mined worldwide. Vermiculite has been used as loose fill ...

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  • Vermiculite | Avid Environmental

    Vermiculite is a micalike mineral mined around the world and used in a variety of commercial and consumer products because of it's insulating and fireresistant properties. Of concern is vermiculite ore produced by the Libby Mine in Montana from 1924 into the late 1980's, the mine officially closed in 1990. During production it was packaged and sold as "Zonolite" Attic Insulation and many ...

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  • Namekara Vermiculite Mine

    operated vermiculite mine. vermiculite ore. vermiculite insulation / mines. MINE. MINES. Mineer. Mines. mine: SAN JOSE MINE Chile. iron ore mines. Mines Ltd.. Mine Resistant Ambush Protected. Crandall Canyon mine. Mine Safety. coal mine * * Related by context. Frequent words. (Click for all words.) 46 Gabon Ghana 39 Puntland Somalia 38 Bamburi Cement 36 Mozambique Tanzania 35 .

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  • Vermiculite

    Products made from vermiculite ore produced by the Libby Mine were not widely used after the mid1980's and have not been on the market in Canada since 1990. Asbestos can cause lung disease including lung cancer in people who are exposed to airborne particles. Asbestos poses health risks only when fibers are present in the air that people breathe. If asbestos fibers are enclosed or tightly ...

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  • Home · Dicalite Management Group

    Vertically Integrated: From Mine to Appliion. Dicalite Management Group is an international industrial minerals company with a unique multimineral platform including perlite, vermiculite, and diatomaceous earth, represented across three brands: Dicalite, Dicaperl, and Specialty Vermiculite.

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  • SURFACE MINING 1996

    The Vermiculite Operations Department (VOD) of the Company operates two shallow openpits from which the vermiculite ore is recovered. The mining operation is notoriously difficult because of the sporadic and unpredictable distribution of all the economic minerals. The vermiculite ore was mined from the start by opencast methods, the bench height being maintained at 5 m. The vertical blastholes ...

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  • Vermiculite

    Vermiculite Vermiculite is a hydrated magnesium aluminum silie mineral which resembles mica in appearance. It is found in various parts of the world including Australia, Brazil, Bulgaria, Kenya, Russia, South Africa, Uganda, USA and Zimbabwe. Vermiculite is mined using open cast mining techniques where the ore is separated from other minerals and then screened or [.]

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  • Western Mineral Products: Vermiculite Processing ...

    Ore from the Libby mine was shipped to many processing plants around the country. From 1938 to 1989, ore was processed at the Western Mineral Products plant loed at 1720 Madison St. NE in Minneapolis. At this plant, raw vermiculite was heated until the moisture trapped in the ore caused it to pop like popcorn. After going through this "exfoliation" process, the vermiculite was light and ...

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  • Vermiculite Home Page for Information about Vermiculite ...

    Reports on the Vermiculite Mines Currently Being Used by Producers of Expanded Vermiculite. The February 2007 IOM Testing Results on Chinese Vermiculite (in .pdf format) The September 2006 IOM (Institute of Occupational Medicine) Report on "Sampling and Analysis of Crude Vermiculite Samples for Possible Asbestiform Content (September 2006)". "Polarised Light Microscopy .

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  • Vermiculite

    Vermiculite ore contaminated by sea water should, as a general rule, be condemned as unusable. Chloride contamination would prohibit its use in concrete or any other use where it would come into contact with mild steel. Drying wet vermiculite ore could involve additional handling and energy costs, and this is not usually commercially viable.

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  • MLS 165 Mud Tank Vermiculite Mine

    Mining of vermiculite ore commenced in 1996 and operations consisted of two decommissioned pits, a dry beneficiation processing plant, and supporting mine infrastructure including an onsite camp. MLS 165 is situated within the NT Crown Land Portion 3790 designated as a gemstone fossicking reserve. MLS 165 was excised from portion 3790 in 1995 to allow commencement of mining. It was agreed ...

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  • Asbestos Mines

    Modern mining methods involve fewer miners and rely more on technology and machinery to extract ore. While this resulted in fewer miners at asbestos mines, it did not eliminate the risk of asbestos exposure because miners were also exposed to asbestos parts while operating, maintaining and repairing machinery and equipment. Mining of asbestos peaked during the Industrial Revolution when it was ...

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  • DEPARTMENT OF HEALTH HUMAN SERVICES

     · Vermiculite ore is a micaceous mineral used as insulation, in cements, and in ... imported ore from Palabora Mining Co. Ltd. loed in Phalaborwa, South Africa. Thus, the vermiculite ore used by these facilities came from three domestic sources and one international source. HETA : Vermiculite Technical Assistance to OSHA Closeout Report Page 2 NIOSH collected bulk and air .

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  • Workers exposed to Libby Vermiculite Ore have | EurekAlert!

    The Libby mine closed in 1990 and vermiculite ore used now comes from other sources and is not known to contain asbestos. The Xrays were taken during the past two years, and each was reviewed ...

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  • Top 10 Recent American Industrial Disasters

     · As it turns out, the mine owners knew that the vermiculite ore that came out of the Libby mine was contaminated with a form of asbestos called tremolite – an especially deadly form of asbestos. They also knew there was no way they could remove the asbestos contamination from the vermiculite ore they were mining and processing in Libby, and shipping out by rail car to scores of other ...

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