vermiculite ore exposed

Health of vermiculite miners exposed to trace amounts of ...

There were four deaths from lung cancer and 3.31 expected (SMR 1.21, 95% CI 0.33-3.09). Three of the four deaths were in the lowest exposure category (less than 1 f/ml y); no death was attributed to mesothelioma or pneumoconiosis. These findings contrast with those in Montana where the vermiculite ore was heavily contaminated with fibrous ...

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vermiculite ore exposed - sremachineries

How vermiculite is made material history used. The exposed rock layers are then drilled with large pneumatic or hydraulic drills and the holes are filled with explosive charges When all personnel and equipment have been moved out of the area the explosive charges are detonated Vermiculite ore deposits may also contain a variety of other materials such as mica quartz and feldspar

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Workers Exposed To Libby Vermiculite Ore Have High Rate Of ...

Workers Exposed To Libby Vermiculite Ore Have High Rate Of Chest Wall Abnormalities Date: July 10, 2005 Source: University of Cincinnati Summary: More than one-quarter of tested workers at an Ohio ...

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Limiting Potential Exposures of Workers to Asbestos ...

Vermiculite ore mined near Libby, Montana, which accounted for more than half the worldwide production of vermiculite from 1925 to 1990, was contaminated with asbestos and asbestos-like fibers. Workplace exposure to these fibers caused a serious health problem in local miners and millers, as well as some downstream workers.

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vermiculite ore exposed

vermiculite ore exposed. Jan 03 2007 Vermiculite is a naturally occurring mineral mined in the United States Brazil Argentina Mexico South Africa Zimbabwe Kenya Uganda Egypt India Russia China Japan and Australia Mined vermiculite ore is milled to produce vermiculite concentrate of

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vermiculite ore exposed - gezieninnederland.nl

vermiculite ore exposed VERMICULITE IS NOT ASBESTOS 12 Accessory Minerals in Vermiculites Vermiculite ore deposits like most other rocks contain an assemblage of other minerals besides the vermiculite (Addison and Get Price Vermiculite Crudebisley Vermiculite Crude Paora Vermiculite is a of vermiculite ore in manufacture of fire .

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Exposure to Asbestos-Containing Vermiculite Ore and ...

Jul 01, 2010  Mortality in a cohort of vermiculite miners exposed to fibrous amphibole in Libby, Montana. Occup Environ Med 61(4):363-366 15031396. Crossref, Medline, Google Scholar; McDonald JC, Sebastien P, Armstrong B. 1986. Radiological survey of past and present vermiculite miners exposed to tremolite. Br J Ind Med 43(7):445-449 3013279. Medline, Google ...

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Plant Workers Exposed to Vermiculite Ore from Libby, Mont ...

May 24, 2005  More than one-quarter of tested workers at an Ohio manufacturing plant historically exposed to asbestos-containing vermiculite ore exhibited signs of scarring of the chest wall lining, or pleural plaques, which are usually considered markers of previous exposure to asbestos fibers, according to research from the University of Cincinnati College of Medicine.

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Health of vermiculite miners exposed to trace amounts of ...

There were four deaths from lung cancer and 3.31 expected (SMR 1.21, 95% CI 0.33-3.09). Three of the four deaths were in the lowest exposure category (less than 1 f/ml y); no death was attributed to mesothelioma or pneumoconiosis. These findings contrast with those in Montana where the vermiculite ore was heavily contaminated with fibrous ...

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Limiting Potential Exposures of Workers to Asbestos ...

Vermiculite ore mined near Libby, Montana, which accounted for more than half the worldwide production of vermiculite from 1925 to 1990, was contaminated with asbestos and asbestos-like fibers. Workplace exposure to these fibers caused a serious health problem in local miners and millers, as well as some downstream workers.

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Vermiculite Intermountain HC-02-27-2007release

communities throughout the United States located near facilities that received vermiculite ore from the Libby mine. A major source of exposure to asbestos is from exfoliation of the ore at exfoliation facilities. Exfoliation is the process of heating the vermiculite ore to drive off excess 3

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Study of Asbestos Contamination of Former Vermiculite ...

The risk of developing these diseases depends upon many factors, including the chemistry and shape of the fiber, level of exposure, duration of exposure, the individual's physiological response to fiber exposure, and the smoking history of the exposed individual.11 Vermiculite Processing Vermiculite is produced from ore mined throughout the world.

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Environmental Tracking - Minnesota Department of Health

Apr 23, 2019  Vermiculite ore from a mine in Libby, Montana was contaminated with naturally occurring asbestos. For over 50 years, Western Mineral Products (later called the W. R. Grace plant) in Northeast Minneapolis used this contaminated ore. For many years, waste material was given freely to the community, and used as fill in driveways, yards, and gardens.

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US: Vermiculite Products Could Expose Consumers to ...

Feb 15, 2000  The company has been sued by nearly 200 former workers or their families, and is now the subject of a class action lawsuit representing some 26,000 people exposed to asbestos from contaminated vermiculite ore, including mineworkers, processing plant employees and Libby residents.

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Workers Exposed To Libby Vermiculite Ore Have High Rate Of ...

Mar 23, 2010  Workers Exposed To Libby Vermiculite Ore Have High Rate Of Chest Wall Abnormalities Researchers examined recent chest X-rays of 236 people who worked at a plant in Marysville, Ohio, that until 1980 used vermiculite ore mined in

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vermiculite ore exposed - gezieninnederland.nl

vermiculite ore exposed VERMICULITE IS NOT ASBESTOS 12 Accessory Minerals in Vermiculites Vermiculite ore deposits like most other rocks contain an assemblage of other minerals besides the vermiculite (Addison and Get Price Vermiculite Crudebisley Vermiculite Crude Paora Vermiculite is a of vermiculite ore in manufacture of fire .

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Libby vermiculite exposure and risk of developing asbestos ...

Purpose of review: 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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Federal Register :: Disease Progression in Persons Exposed ...

May 05, 2003  The Agency for Toxic Substances and Disease Registry (ATSDR) announces the availability of fiscal year (FY) 2003 funds for a cooperative agreement program to conduct health studies of disease occurrence and progression in persons exposed to vermiculite ore in Libby, Montana (MT) or shipped from Libby to other locations for packaging and processing.

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Workers exposed to Libby Vermiculite Ore have high rate of ...

Workers exposed to Libby Vermiculite Ore have high rate of chest wall abnormalities May 24, 2005 SAN DIEGO -- More than one-quarter of tested workers at an Ohio manufacturing plant historically exposed to asbestos-containing vermiculite ore exhibited signs of scarring of the chest wall lining, a study by researchers from the University of Cincinnati has found.

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Vermiculite Northwest, Spokane, Health Consultation, 2004

vermiculite mine operated from the early 1920s until 1990, and was last owned by the W.R. Grace Company. Unfortunately, the ore from Libby contained amphibole asbestos at levels as high as 26%.3 Because mining and processing vermiculite is an extremely dusty task, miners and workers were exposed to high levels of asbestos-containing dust.

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Exposure to Asbestos-Containing Vermiculite Ore and ...

Jul 01, 2010  Mortality in a cohort of vermiculite miners exposed to fibrous amphibole in Libby, Montana. Occup Environ Med 61(4):363-366 15031396. Crossref, Medline, Google Scholar; McDonald JC, Sebastien P, Armstrong B. 1986. Radiological survey of past and present vermiculite miners exposed to tremolite. Br J Ind Med 43(7):445-449 3013279. Medline, Google ...

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Workers Exposed To Libby Vermiculite Ore Have High Rate Of ...

Workers Exposed To Libby Vermiculite Ore Have High Rate Of Chest Wall Abnormalities. SAN DIEGO -- More than one-quarter of tested workers at an Ohio manufacturing plant historically exposed to asbestos-containing vermiculite ore exhibited signs of scarring of the chest wall lining, a study by researchers from the University of Cincinnati has found.

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Study of Asbestos Contamination of Former Vermiculite ...

The risk of developing these diseases depends upon many factors, including the chemistry and shape of the fiber, level of exposure, duration of exposure, the individual's physiological response to fiber exposure, and the smoking history of the exposed individual.11 Vermiculite Processing Vermiculite is produced from ore mined throughout the world.

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Former Vermiculite Northwest Portland, Oregon

with asbestos from vermiculite ore that was received from Libby, Montana and processed at the former Vermiculite Northwest facility in Portland, Oregon. The evaluation focused on ways that people could have been or may be exposed to asbestos from vermiculite processed at this site from 1967 until it

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Vermiculite Health, Safety and Environmental Aspects

Vermiculite and other ore bodies can contain a variety of associated minerals such as mica, quartz, feldspar, etc. The associated minerals are unique to a particular deposit and, in ... Vermiculite Miners and Millers Exposed to Tremolite-Actinolite: Part I, Exposure Estimates” Am. J. Ind, Hyg. 11,1-14,1987. Amandus, H.E., and Wheeler, R ...

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Vermiculite Northwest Fact Sheet, 2009 Update

vermiculite ore from the 1940s until it closed in 1974. The ore used at the former Vermiculite Northwest facility was obtained from a mine in Libby, Montana, which was last owned and ... exposed to asbestos from vermiculite waste rock if it was used as fill material, for gardening, or

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Incidental Vermiculite Building Insulation Exposure FAQs

May 08, 2019  Exfoliated vermiculite was sold for use in fertilizer and in fire proof doors. Some of the exfoliated vermiculite waste had been placed in a local landfill. An IMC official said Koos purchased vermiculite ore from American Vermiculite (a South African mine) and from W.R. Grace, but, to their knowledge, none of the ore came from the Libby mine.

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The Danger in Your Garden - Asbestos Contaminated Vermiculite

Jul 08, 2020  Asbestos ore is made up of long, thin fibers that can only be seen through a microscope. When these tiny fibers become airborne, they can be inhaled into the lungs, where they might eventually cause asbestosis, lung cancer, and even the deadly asbestos cancer mesothelioma. Vermiculite was first identified in 1881 in a mine near Libby, Montana.

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Vermiculite ore

Vermiculite ore for the exfoliation. Vermiculite is the raw material for the production of the exfoliated vermiculite. Application of the expanded vermiculite: construction, horticulture, agriculture, aviculture, animal husbandry, ecology and other fields. Saint-Petersburg Mica Manufactory was founded in 1925.

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Disease Progression in Persons Exposed to Asbestos ...

Disease Progression in Persons Exposed to Asbestos Contaminated Vermiculite Ore in Marysville, Ohio (R01): CDC's Procurement and Grants Office has published a funding opportunity announcement entitled, "Disease Progression in Persons Exposed to Asbestos Contaminated Vermiculite Ore in Marysville, Ohio (R01)." Approximately $500,000 will be available in fiscal year 2009 to fund one award.

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Silver Raw Vermiculite Ore- Supply Xinjiang White Crude ...

Silver Raw Vermiculite Ore Silver Raw Vermiculite Ore, good quality crude vermiculite, also called Xinjiang White Raw Vermiculite, because this special kind of crude vermiculite ore is located in Xinjiang, China. MiningValleys supply a full granule size range, including superfine grade, fine grade, medium grade, and large grade.

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Workers exposed to Libby Vermiculite Ore have high rate of ...

May 24, 2005  More than one-quarter of tested workers at an Ohio manufacturing plant historically exposed to asbestos-containing vermiculite ore exhibited signs of

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Workers Exposed To Libby Vermiculite Ore Have High Rate Of ...

Asbestos and the Law; Tips for Working with an Asbestos Attorney; New York Asbestos Law; Choosing the Right Mesothelioma Attorney; What Can a Mesothelioma Lawyer Do to Help?

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vermiculite -NW 041608 2 - Oregon

• The site was an exfoliation facility that processed more than 100,000 tons of vermiculite ore from Libby mine. Exfoliation, a processing method in which ore is heated and “popped,” is expected to have released more asbestos than other processing methods. Phase 2: ATSDR will continue to evaluate former Libby vermiculite processing sites in

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Health of vermiculite miners exposed to trace amounts of ...

There were four deaths from lung cancer and 3.31 expected (SMR 1.21, 95% CI 0.33-3.09). Three of the four deaths were in the lowest exposure category (less than 1 f/ml y); no death was attributed to mesothelioma or pneumoconiosis. These findings contrast with those in Montana where the vermiculite ore was heavily contaminated with fibrous ...

More

Former Vermiculite Northwest Portland, Oregon

with asbestos from vermiculite ore that was received from Libby, Montana and processed at the former Vermiculite Northwest facility in Portland, Oregon. The evaluation focused on ways that people could have been or may be exposed to asbestos from vermiculite processed at this site from 1967 until it

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Workers Exposed To Libby Vermiculite Ore Have High Rate Of ...

Workers Exposed To Libby Vermiculite Ore Have High Rate Of Chest Wall Abnormalities. SAN DIEGO -- More than one-quarter of tested workers at an Ohio manufacturing plant historically exposed to asbestos-containing vermiculite ore exhibited signs of scarring of the chest wall lining, a study by researchers from the University of Cincinnati has found.

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DEPARTMENT OF HEALTH HUMAN SERVICES

Dec 07, 2004  downstream users of vermiculite who either expand vermiculite or use expanded vermiculite as a product ingredient. Vermiculite ore is a micaceous mineral used as insulation, in cements, and in horticultural mixes.1 Some vermiculite has been documented to

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EPA/Asbestos/Vermiculite Fact Sheet

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

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Former Vermiculite Northwest Processing Facility

Vermiculite Northwest, Inc. and later by W.R. Grace and Company. Vermiculite ore from Libby, Montana, was received at the property. The ore contained asbestos. Records show that up to 10,317 tons of vermiculite ore was processed at the facility from January 1967 to October 1970.

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The Danger in Your Garden - Asbestos Contaminated Vermiculite

Jul 08, 2020  Asbestos ore is made up of long, thin fibers that can only be seen through a microscope. When these tiny fibers become airborne, they can be inhaled into the lungs, where they might eventually cause asbestosis, lung cancer, and even the deadly asbestos cancer mesothelioma. Vermiculite was first identified in 1881 in a mine near Libby, Montana.

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vermiculite ore exposed - zeskampspecialist.nl

Jul 22, 2020  vermiculite ore exposed FlyFilm-Studio Workers exposed to libby vermiculite ore have high rate of chest wall abnormalities san diego more than onequarter of tested workers at an ohio manufacturing plant historically exposed to asbestoscontaining vermiculite ore exhibited signs of scarring of the chest wall lining, a study by researchers from ...

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vermiculite ore exposure - aircraftengine.cz

Feb 19, 2021  Vermiculite is a naturally occurring mineral used in insulation (brand name, “Zonolite”), construction, and gardening products. From 1924 -1990, most of the world’s supply of raw vermiculite ore came from Libby, Montana. This ore is now known to contain a group of mineral fibers called. More

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Incidental Vermiculite Building Insulation Exposure FAQs

May 08, 2019  Exfoliated vermiculite was sold for use in fertilizer and in fire proof doors. Some of the exfoliated vermiculite waste had been placed in a local landfill. An IMC official said Koos purchased vermiculite ore from American Vermiculite (a South African mine) and from W.R. Grace, but, to their knowledge, none of the ore came from the Libby mine.

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Former Zonolite Facility - Easthampton, Hampshire County ...

vermiculite ore from a Libby mine. Exfoliation, a processing method in which ore is heated and “popped,” is expected to have released more asbestos than other processing methods. The following document is one of the site-specific health consultations that ATSDR and its state health partners are developing for each of the 28 Phase 1 sites.

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Vermiculite ore

Vermiculite ore for the exfoliation. Vermiculite is the raw material for the production of the exfoliated vermiculite. Application of the expanded vermiculite: construction, horticulture, agriculture, aviculture, animal husbandry, ecology and other fields. Saint-Petersburg Mica Manufactory was founded in 1925.

More

Workers exposed to Libby Vermiculite Ore have high rate of ...

May 24, 2005  More than one-quarter of tested workers at an Ohio manufacturing plant historically exposed to asbestos-containing vermiculite ore exhibited signs of

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