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Vermiculite ore concern

From 1925 to 1990 vermiculite ore mined near Libby Mont accounted for more than half of the global production and supply During the mining process asbestos and asbestos fibers were mined and mixed with vermiculite It is primarily the asbestoscontaminated vermiculite that

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    Health Canada Vermiculite Insulation Containing

    Of concern is vermiculite ore produced by the Libby Mine in Montana from the 1920s to 1990 It was sold as Zonolite Attic Insulation and possibly other brands in Canada during that time Vermiculite from the Libby Mine may contain asbestos The Libby Mine supplied the majority of the world market in vermiculitebased insulation

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    Summary Report Exposure To AsbestosContaining

    Oct 29 2008Vermiculite A group of hydrated silicate minerals that resemble mica When heated water molecules between the platy layers of the mineral structure vaporize and the vermiculite expands into accordionlike nuggets in a process referred to as exfoliation

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    Libby Amphibole Asbestos Case Studies

    Sources of Libby Amphibole Asbestos Libby Amphibole or LA is an ore within the mineral vermiculite It is often times found within the soil sand and bodies of water in Libby The most hazardous force of LA would be within the vermiculite insulation that is in many houses in and outside of Libby

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    Atticare Toronto Markham North York Vaughan Brampt

    Of concern is vermiculite ore produced by the Libby Mine in Montana from the 1920s to 1990 It was sold as Zonolite Attic Insulation and possibly other brands in Canada during that time Vermiculite from the Libby Mine may contain amphibole asbestos The Libby Mine supplied the majority of the world market in vermiculitebased insulation

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    IWesHar

    Vermiculite is a micalike mineral mined around the world and used in a variety of mercial and consumer products because it is fireresistant and has good insulation qualities Of concern is vermiculite ore produced by the Libby Mine in Montana from the 1920s to 1990

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    Vermiculite Alternatives Replacements Mushroom

    Jan 31 2003The mine was for vermiculite which was crushed and milled The vermiculite ore body in Zonolite Mountain contains an asbestiform amphibole mineral Asbestiform minerals are of concern because inhalation of asbestos fibers suspended in air can result in lung diseases such as asbestosis mesothelioma and lung cancer

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    Vermiculite Insulation Mini Course Student Discuss

    Jul 27 2017Not all vermiculite insulation contains asbestos but prior to 1990 much of the worlds supply of vermiculite came from a mine near Libby Montana This mine had a natural deposit of asbestos which contaminated the vermiculite Attic insulation using vermiculite ore that originated from the Libby mine may contain asbestos fibers

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    Vermiculite Is A Porous Mineral Used As Insulation

    Oct 08 2012Vermiculite is a mineral ore that is posed of hydrated laminar magnesiumaluminumiron silicate 1 Vermiculite ores may also contain a range of other minerals including asbestos 1 All vermiculite does not necessarily contain asbestos however much of the vermiculite from Libby

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    Resolving The Vermiculite Asbestos Conflict

    Edward N Alley discovered the vermiculite deposits during World War I when he was prospecting for vanadium He experimented with samples built a small kiln to process the ore and promoted the material under the trade name of Zonolite This led to a demonstration plant in 1924 followed two years later by a larger facility

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    Vermiculite Avid Environmental

    Vermiculite is a micalike mineral mined around the world and used in a variety of mercial and consumer products because of its insulating and fireresistant properties Of concern is vermiculite ore produced by the Libby Mine in Montana from 1924 into the late 1980s the mine officially closed in 1990

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    Vermiculite Home Page For Information About Vermic

    This site was designed as a basic introductory page on some of the technical characteristics of vermiculite We also have include a listing of many helpful web sites and hope you will launch from here to find out how vermiculite is used how it is mined and processed and

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    Paracel Laboratories Ltd Asbestos Vermiculite

    Of concern is vermiculite ore produced by the Libby Mine in Montana from the 1920s to 1990 It was sold as Zonolite Attic Insulation and possibly other brands in Canada during that time Vermiculite from the Libby Mine often contains amphibole asbestos

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    Gardening With Vermiculite Vermiculite Uses And

    Vermiculite is the name of a group of hydrated laminar minerals aluminumiron magnesium silicates which look like mica Horticultural vermiculite is processed with massive heat that expands it into accordion shaped pellets posed of multiple layers of thin plates

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    Libby Vermiculite Exposure And Risk Of Developing

    The vermiculite ore formerly mined in Libby Montana contains asbestiform amphibole fibers of winchite richterite and tremolite asbestos Because of the public health impact of widespread occupational and nonoccupational exposure to amphiboles in Libby vermiculite numerous related studies have been published in recent years

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    STRATEGY FOR FURTHER ASSESSMENT OF

    An estimated 105 exfoliation facilities in the US received vermiculite ore from the Libby mine Because environmental contamination is more likely exfoliation facilities both former and current that are thought to have received asbestoscontaminated ore from Libby MT are of

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    1128 Vermiculite Processing US EPA

    The primary pollutants of concern in vermiculite processing are particulate matter PM and PM less than 10 micrometers PM10 Particulate matter is emitted from screening drying exfoliating and materials handling and transfer operations 2 nitrogen oxides NO x and sulfur oxides SO x

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    Vermiculite NW 041608 2

    The former WR Grace processing plant known as Vermiculite Northwestis located at the intersections of N Harding N Randolph and N Loring in an industrial area near the Willamette River in northeast Portland Oregon Vermiculite was processed at the site from the early 1950s through 1993

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    Protect Your Family From AsbestosContaminated Verm

    Concerns about Asbestoscontaminated Vermiculite Insulation A mine near Libby Montana was the source of over 70 percent of all vermiculite sold in the United States from 1919 to 1990 There was also a deposit of asbestos at that mine so the vermiculite from Libby was contaminated with asbestos

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    Vermiculite FAQs Dudley Services Inc

    However the vermiculite we may purchase at the local nursery as a soil conditioner is tested frequently and does not contain asbestos Look to this website for clarification The main concern is with a particular vermiculite ore that originated from a certain mines in Libby Montana

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    EPAAsbestosVermiculite Fact Sheet University Of

    Vermiculite is produced from ore mined throughout the world In the United States mines are located in Montana South Carolina and Virginia When heated the ore expands into a light rather fluffy material that is fire resistant chemically inert absorbent light weight and odorless

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    Risk Of Asbestos Who Is At Risk Of Asbestos Comple

    The insulation that raises the most concern is called Zonolite derived from vermiculite ore in a nowclosed 80yearold mine in Libby Montana last owned by WR Grace Co Hundreds of Libby miners and their relatives have died of asbestosrelated diseases The ore was sent to more than 700 locations throughout North America

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    atal Asbestosis 50 Years After Brief High Intensi

    In these latter two areas vermiculite ore deposits contain other minerals including tremolite It is the tremolite and other asbestiform fibers that have significant implication to human health There is increasing concern about the threat of asbestos contamination of vermiculite

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    Vermiculite Insulation And Asbestos

    The concern involves insulation produced from vermiculite ore from the Libby Mine in Montana from the 1920s until 1990 It was sold as Zonolite Attic Insulation and possibly other brands in Canada during that time Vermiculite from the Libby Mine may contain asbestos

    more
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    Fixing Attics With Vermiculite Insulation

    Apr 17 2015Vermiculite is a mineral mined from the earth posed of shiny flakes that look like mica When this mineral is put in an oven it expands like popcorn Expanded vermiculite is lightweight fireresistant and odorless since it has an Rvalue of about R2 per inch it was used for decades as an insulation material

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    Asbestos Vermiculite Building Insulation FAQs

    Vermiculite insulation FAQs Frequentlyasked questions and answers about asbestos in vermiculite insulation what to do about vermiculite insulation that contains or might contain asbestos how to minimize any asbestos hazards from vermiculite how to test vermiculite for asbestos and when and how to remove asbestoscontaminated vermiculite from a building

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    Vermiculite Howard Garrett

    Vermiculite can hold several times its own weight in water but even when the medium is thoroughly wet ample air circulates about plant roots helping to avoid dampingoff and other diseases There is some concern about breathing this material

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    Vermiculite Toxicity Garden Guides

    From 1925 to 1990 vermiculite ore mined near Libby Mont accounted for more than half of the global production and supply During the mining process asbestos and asbestos fibers were mined and mixed with vermiculite It is primarily the asbestoscontaminated vermiculite that

    more
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    Vermiculite America Contracting

    Vermiculite is a micalike mineral mined around the world and used in a variety of mercial and consumer products because it is fireresistant and has good insulation qualities Of concern is vermiculite ore produced by the Libby Mine in Montana from the 1920s to 1990

    more
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    Ground Goop Who Uses It Model Railroad Hobbyist

    Of concern is vermiculite ore produced by the Libby Mine in Montana from the 1920s to 1990 It was sold as Zonolite Attic Insulation and possibly other brands in Canada during that time Vermiculite from the Libby Mine may contain amphibole asbestos The Libby Mine supplied the majority of the world market in vermiculitebased insulation

    more

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