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The vermiculite deposit at the mine in Libby, Montana, was (and is) heavily contaminated with asbestos. Numerous people were knowingly exposed to the harmful dust of vermiculite that contained asbestos. Unfortunately, the mine had been operating since the 1920s, and environmental and industrial controls were virtually nonexistent until the ...
Vermiculite ore was shipped from mines in Libby, Montana, to the Southern California expansion plant where he worked. His duties included unloading the vermiculite ore, operating a forklift, shoveling ore into canvas bags and, occasionally, shoveling ore into ovens.
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.
Workers Exposed to Libby Vermiculite Ore Have High Rate of Chest Wall Abnormalities. Science Daily 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 the University of ...
Jul 10, 2005· Workers Exposed To Libby Vermiculite Ore Have High Rate Of Chest Wall Abnormalities Date: July 10, 2005 Source: University of Cincinnati Summary: More than onequarter of tested workers at an Ohio ...
Mar 07, 2009· WR Grace has gone bankrupt under the weight of 100,000 asbestosrelated claims, mostly from plant workers around the US where raw vermiculite from Libby was processed. It .
Apr 01, 2007· Libby 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.
with asbestos from vermiculite ore that was received from Libby, Montana and processed at the former Vermiculite Northwest facility ... exposure to these workers is unknown. Could I be exposed to ... The Vermiculite Northwest plant processed more than 193,113 tons of Libby
Mar 18, 2008· Workers exposed to low levels of an asbestoslike mineral from Montana more than two decades ago are at an increased risk for lung disease today, according to .
The Arms of Tragedy: Libby''s Asbestos Went Far Beyond Just Libby. In Minneapolis, Minnesota, a vermiculite processing plant operated from the 1930s until the late 1980s. The plant utilized vermiculite ore from Libby for much of those 50 to 60 years, meaning many of the plant''s workers and nearby residents were at risk.
asbestosrelated lung disease. Workers employed at Supreme Perlite during were exposed to elevated levels of Libby asbestos as a result of working in and around the facility. contacts of former workers were also likely to have been exposed to Libby asbestos brought home on clothing and hair of workers. Could I be exposed to
Workers Exposed To Libby Vermiculite Ore ... ScienceDaily. 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 the University of Cincinnati has found.
The correspondence stated "...we have experienced asbestosis in % of the workers (with over 10 years'' service) in Libby, as well as in 28% of the workers (with over 10 years'' service) exposed to Libby ore in the expanding plants."7 Other facilities which processed Libby vermiculite ore .
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, or pleural ...
The vermiculite from Libby contained asbestos. ATSDR has linked some exposures to Libby vermiculite to respiratory illnesses. Those who lived with former Zonolite and Grace workers while Libby vermiculite was being processed at the plant also were potentially exposed to asbestos. Workers may have carried home asbestos fibers on their hair ...
Vermiculite contaminated with Libby Amphibole asbestos was shipped to nearly 300 processing plants around the country. Upon delivery, the ore was exfoliated. Exfoliation is a process in which vermiculite ore is heated at high temperatures to expand or "pop" it.
Mar 01, 2007· facilities processed asbestoscontaminated vermiculite ore from Libby, Montana. 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.
Jan 01, 2012· Health effects from occupational exposures to Libby asbestos in operations beyond Libby are emerging. Workers at a vermiculite expansion plant that produced material primarily for lawn care products were found to have increased risk of pleural abnormalities at exposures lower than those seen in Libby (Rohs et al. 2008).
Plant Workers Exposed to Vermiculite Ore from Libby, Mont., Shown to Have High Rate of Chest Wall Abnormalities 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 the University of ...
The story can be traced back to 1919 when companies first started pulling vermiculite out of mines in Libby. Known commercially as Zonolite, vermiculite was used in a variety of construction materials including insulation for homes and buildings. Decades of mining the vermiculite exposed workers and residents to toxic asbestos dust.
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 the University of Cincinnati has found.
EPA reported that the Libby vermiculite ore, even after processing it to remove impurities, remained contaminated with asbestos. This report resulted from an investigation EPA had launched in 1978, after learning that workers at a vermiculiteprocessing plant in Marysville, Ohio—one of
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 the University of Cincinnati has found.
facilities in Libby, MT. The plant produced vermiculite products from ore mined and processed in Libby through the use of two expansion furnaces, which heated the ore to approximately 2000 F. W. R. Grace documents indicate that while it operated, the plant processed over 138,000 tons of vermiculite ore .
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