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This facility was listed as a vermiculite exfoliation plant in reports issued by the Grace continued manufacturing gypsum and cement at the site until 1998. In addition to receiving vermiculite ore from the Libby this report stated that future disturbances to this area could result in asbestos exposures to workers.
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.
cant amounts of asbestos when compared to the Libby ore. An EPA document reported that amphibole types found at Libby are not known to be found in vermiculite from the domestic vermiculite insulation mine source in Louisa County VA (17). In 2005, the USGS surveyed 101 vermiculite ore samples from their archives (18). During analyses
Community exposure to asbestos from contaminated vermiculite ore from Libby, with a plant worker for radiographic evidence of lung changes consistent with asbestos exposure.
While the Libby vermiculite mine closed in 1990, Grace continued to operate the facility until 1991. The current owner leased the site in late 1991, bought it in 1993, and still operates the vermiculite expansion (exfoliation) plant. The current owner reports that he did not process vermiculite ore from Libby. The plant now receives
(CN) The Montana Supreme Court ruled Wednesday that a workers compensation insurer is liable for damage claims from people who worked at the Grace vermiculite plant in Libby, Montana. Vermiculite is a silicate mineral that occurs naturally in asbestosladen rock on Vermiculite Mountain near Libby. Thousands of Grace workers and their families since the 1960s have been injured or have
Vermiculite, a mineral with many commercial and industrial uses, was mined in Libby, Montana, from the early 1920s until 1990. During those years, vermiculite from Libby was shipped to hundreds of locations throughout the United States. We now know that the vermiculite from Libby
#0183;#32;Community exposure to asbestos from contaminated vermiculite ore from Libby, Montana, occurred in many processing sites in the United States, including a densely populated urban residential neighborhood of Minneapolis, examined exposed community residents who never worked at the plant or never lived with a plant worker for radiographic evidence of lung changes consistent
Vermiculite mining in Libby began more than 80 years ago when Alley bought the Rainy Creek claims and launched Zonolite Company. In 1963, the Marylandbased Grace amp; Company acquired Alleys Zonolite business. By this time, vermiculite had been mined for more than 40 years in an area about seven miles outside of Libby.
#0183;#32;Researchers examined recent chest Xrays of 236 people who worked at a plant in Marysville, Ohio, that until 1980 used vermiculite ore mined in
#0183;#32;Researchers examined recent chest Xrays of 236 people who worked at a plant in Marysville, Ohio, that until 1980 used vermiculite ore mined in
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.
Oregon. Vermiculite was processed at the site from the early 1950s through 1993. From 1967 through 1991, Vermiculite Northwest received shipments of Libby vermiculite that were exfoliated at the site. Libby vermiculite is known to contain asbestos (See Appendix B) which was released into the indoor air of buildings where the material was
#0183;#32;The ore was filled with Libby amphibole, a particularly toxic combination of asbestos fibers. The plant that milled the vermiculite pumped out thousands
#0183;#32;A vermiculite processing plant in a Minneapolis, Minnesota neighborhood utilized asbestoscontaining ore from Libby, Montana from the late 1930''s until 1989. Multiple pathways of exposure to Libby asbestos were characterized in a cohort of over 6000 plant workers and residents living near the plant.
the Libby vermiculite ore was the Western Minerals/ Grace (WM/WRG) facility in Minneapolis, Minnesota. The WM/WRG facility processed vermiculite ore mined in Libby, Montana, from 1938 to 1989. This facility was one of approximately 250 such processing facilities in the United States that received Libby ore. At the WM/WRG facility, the vermiculite
their families in the area of Libby, Montana died or became ill from exposure to asbestoscontaminated vermiculite ore, which has been mined near Libby since the 1920s. Subsequently, the media reported that Environmental Protection Agency (EPA) officials knew about the exposure to asbestos and the dangers it posed, but did not take any action.
Vermiculite ore from a mine near Libby, Montana, is known to be contaminated with amphibole asbestos (primarily winchite, richterite, and tremolite), which is liberated in the mining and processing of the ore [Agency for Toxic Substances and Disease Registry (ATSDR) 2008; Meeker et al. 2003].The mining and processing of vermiculite in Libby have been associated with elevated mortality from
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