plant workers exposed to vermiculite ore from libby
Asbestos Exposure In Colorado
12/01/2022Ray D. Nixon Power Plant Western Minerals Company Plant Western Minerals Company Plant in Denver, Colorado processed over 80,000 tons of vermiculite ore between 1867 and 1990. The ore was shipped by W.R. Grace from Libby, Montana, and contained the toxin. The company exposed workers and nearby residents to significant amounts of the
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Libby, MT and Asbestos
04/10/2022Asbestos contamination occurred in the Libby, Montana, vermiculite mine from the 1920s to 1990. In the 1920s, the Zonolite Company formed and began mining vermiculite in Libby, Montana. Zonolite continued mining until W.R. Grace purchased the company in 1963. W.R. Grace maintained the operations until the Libby mine closed in
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What is Vermiculite?
Vermiculite, when subjected to heat, exfoliates to form elongated concertina like particles which are lightweight, incombustible, compressible, highly absorbent, and non-reactive. Exfoliated vermiculite particles can have high cation exchange capacity and their surface chemistry may be modified.
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Table 1 from Exposure to Asbestos
Table 1. Characteristics of study participants in 2000–2001 living in Libby, Montana, who were ≤ 18 years of age when the mine closed in 1990. - Exposure to Asbestos-Containing Vermiculite Ore and Respiratory Symptoms among Individuals Who Were Children While the Mine Was Active in Libby, Montana
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Minneapolis Community Vermiculite Health Study
Introduction and background. This study investigated asbestos-related lung disease and deaths in Northeast Minneapolis due to asbestos exposure from a vermiculite processing plant that operated from 1938 to 1989. Vermiculite ore from a mine in Libby, Montana was contaminated with naturally occurring asbestos. For over 50 years, Western Mineral
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Vermiculite mining in Libby left trouble in the air
11/02/20071923 - The year that commercial mining of vermiculite began near Libby. The mine closed in 1990. 794 - Number of homes in Libby that have been cleaned in recent years, but at least 600 more
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Welcome to Libby, Montana, the town that was poisoned
08/03/2009WR Grace has gone bankrupt under the weight of 100,000 asbestos-related claims, mostly from plant workers around the US where raw vermiculite from Libby was processed. It has agreed to
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Exposure to Asbestos
Libby, Montana, was home to the largest vermiculite ore mine in the United States. The processing, use, and transport of the ore, which was ntaminated with amphibole asbestos, led to generalized contamination of the community. The mine closed in 1990. objectives: We examined the prevalence of respiratory symptoms in 2000-2001 and their associa
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Vermiculite Northwest Fact Sheet, 2009 Update
vermiculite ore from the 1940s until it closed in 1974. Libby, Montana, which was last owned and operated by the W.R. Grace Company. The ore that came from Libby was contaminated with asbestos. After it arrived at Vermiculite Northwest, it was processed in a furnace where so workers were exposed to high levels of dust that contained
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NE Minneapolis Community Vermiculite Preliminary Report
vermiculite ore came from Libby, Montana. This ore is now known to contain a group of mineral fibers called "Libby Asbestos." Ore from the Libby mine was shipped to many processing plants around the country. From about 1938 to 1989, ore was processed at the Western Mineral Products/W.R. Grace (WM/ WRG) plant located at 1720 Madison St.
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Media Announcement
28/09/2006- former workers who processed vermiculite from a mine in libby, montana at two plants located in phoenix and glendale were exposed to asbestos and are at increased risk for developing asbestos related health problems, the arizona department of health services (azdhs) and the federal agency for toxic substances and disease registry (atsdr)
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Photographs of commercial, expanded vermiculite ore.
06/11/2017vermiculite ore and therefore its potential to contain asbestos. Spectra of 52 expanded ore samples, including attic insulation, commercial packing materials, and horticultural products from Libby, Montana; Louisa, Virginia; Enoree, South Carolina; Palabora, South Africa; and Jiangsu, China, were measured with a portable spectrometer.
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Low
07/06/2007A cluster of bloody pleural effusions in workers sparked a 1980 study at a facility that was expanding Libby vermiculite for use as an inert carrier for lawn care products ( 6 ). This was the first published study to identify health risks from the amphibole fibers contained within the Libby vermiculite ore.
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Asbestos Exposure In Colorado
12/01/2022Ray D. Nixon Power Plant Western Minerals Company Plant Western Minerals Company Plant in Denver, Colorado processed over 80,000 tons of vermiculite ore between 1867 and 1990. The ore was shipped by W.R. Grace from Libby, Montana, and contained the toxin. The company exposed workers and nearby residents to significant
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Asbestos Exposure In Colorado
12/01/2022Western Minerals Company Plant. Western Minerals Company Plant in Denver, Colorado processed over 80,000 tons of vermiculite ore between 1867 and 1990. The ore was shipped by W.R. Grace from Libby, Montana, and contained the toxin. The company exposed workers and nearby residents to significant amounts of the carcinogen.
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Exposure estimates for workers in a facility expanding Libby
ABSTRACT Low cumulative fiber exposure (CFE) has been associated with health effects in a cohort exposed to Libby vermiculite. This study refines the original 1980 exposure estimates and compares the CFE results. Cumulative fiber exposure estimates were developed using three times more industrial hygiene measurements and long-term
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Exposure to Vermiculite Asbestos in Libby Montana
09/04/2000Most Asbestos Diseases Linked to Mine Workers April 09, 2000 Erica Curless, Missoulian State Bureau. Direct exposure HELENA - Most Libby residents with asbestos-related diseases had a direct connection to the former vermiculite mine or its workers, the federal Environmental Protection Agency has concluded.
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Vermiculite, respiratory disease, and asbestos exposure in Libby
01/04/2007Libby vermiculite workers experienced significant excess deaths from all causes, all cancers, lung cancer, cancer of the pleura, and asbestosis. Mortality from asbestosis and lung cancer increased with increasing cumulative exposure to airborne asbestos and other amphibole fibers.
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Vermiculite Intermountain HC
The occupational exposure pathway for former workers exposed to airborne Libby asbestos in and around these facilities during handling and processing of vermiculite is considered a completed exposure pathway and was a public health hazard. A potential exposure pathway existed for the community around the sites.
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Mobile Asbestos Screening Clinics in Kalispell Oct. 10
23/09/2022Sep. 23—Libby, Montana, was home to a vermiculite mine for over 70 years. The mine closed in 1990, but the damage was already done. The vermiculite ore, processed in various plants around the
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cost to remove vermiculite insulation from attic
au. Attic Insulation.Removing asbestos insulation from an attic costs $4 to $8 per square foot. Keep in mind, new attic insulation costs between $813 and $1492 or $1.50 to $3.00 per square foot.Vermiculite Insulation Removal Costs.Vermiculite attic insulation removal costs between $4 to $8 per square foot on average. Search: Home Depot Vermiculite.Top
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Minneapolis Community Vermiculite Health Study
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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cost to remove vermiculite insulation from attic
I have an older single story cottage with vermiculite insulation in the attic . I understand that the EPA says that all vermiculite installed before 1990 should be considered contaminated with asbestos. We will inspect, assess, quote and provide a step-by-step plan to outline the work and give complete transparency to the removal work. Call
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Community Exposure to Asbestos From a Vermiculite Exfoliation Plant
•Occupational exposure of former workers at the plant (Table2)andthesubsequentexposureoftheirfamilies. •Inhalation of Libby asbestos fibers released from fur- nace stacks and fugitive dust emissions (Table 3). •Children playing in or adults handling vermiculite pro- cessing wastes dumped in piles outside the plant for
WhatsApp:+8617329420102North Carolina
28/03/2022Vermiculite Refineries Zonolite, Inc. is a vermiculite refinery that was founded in 1954 by a popular company known as W.R. Grace. The refinery received around 150 shipments, or about 10,000 tons of vermiculite from W.R. Grace's mine in Libby, Montana. However, the mine was contaminated with asbestos.
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Exposure estimates for workers in a facility expanding Libby
ABSTRACT Low cumulative fiber exposure (CFE) has been associated with health effects in a cohort exposed to Libby vermiculite. This study refines the original 1980 exposure estimates and compares the CFE results. Cumulative fiber exposure estimates were developed using three times more industrial hygiene measurements and long-term workers' input.
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vermiculite ore exposed
US: Vermiculite Products Could Expose Consumers to . 15/02/2000 The vermiculite ore at a mine in Libby, Montana, was contaminated with tremolite. For more than 60 years, W.R. Grace amjp; Co. dug vermiculite ore out of the Zonolite Mountain in Libby. Vermiculite is a volcanic mineral compound that expands when wet.
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The Morbidity and Mortality of Vermiculite Miners and Millers Exposed
The primary purposes of this paper are to: (1) estimate a ratio to convert respirabie airborne dust exposure (million particles per cubic foot, mppcf) to fiber exposure (fibers per cubic centimeter, fibers/cc). (2) estimate the 8-hr TWA fiber exposure for jobs in each year of operation of the Libby facility.
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