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Vermiculite Insulation Identification - InspectAPedia.com

Vermiculite Insulation Identification How to recognize vermiculite insulation; Vermiculite identification photos. Vermiculite insulation identification. How to identify vermiculite or vermiculite insulation by visual inspection. It's easy, as we'll show you here. This article series explains how to recognize vermiculite building insulation that may contain asbestos fibers.

Vermiculite Insulation and Asbestos - leoneking.com

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.

Asbestos-Contaminated Vermiculite - Malignant Mesothelioma ...

Exfoliation is a process in which vermiculite ore is heated at high temperatures to expand or "pop" it. These facilities are of particular concern because exfoliation causes higher amounts of asbestos to be released than other processing methods.

Paracel Laboratories Ltd. - Asbestos / Vermiculite

What is Vermiculite and why is it a risk? Vermiculite is a mica-like mineral mined around the world and used in a variety of commercial and consumer products because it is fire-resistant and has good insulation qualities. Of concern is vermiculite ore produced by the Libby Mine in …

Vermiculite - Wikipedia

Vermiculite is a hydrous phyllosilicate mineral. It undergoes significant expansion when heated. Exfoliation occurs when the mineral is heated sufficiently, and the effect is routinely produced in commercial furnaces. Vermiculite is formed by weathering or hydrothermal alteration of biotite or …

Asbestos Analysis of Vermiculite and Vermiculite ...

Asbestos in Vermiculite - History Libby, Montana • The Libby mine was the source of estimated 70-90% of all vermiculite sold in the U.S. from 1919 to 1990 • W. R. Grace bought the mine and processing facility in 1963 and operated it until 1990. Vermiculite expands or "pops" when heated. This creats pockets of air that make the material ...

IT'S YOUR HEALTH - InspectAPedia.com

Of concern is vermiculite ore produced by the Libby Mine in Montana from the 1920's 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 vermiculite-based insulation.

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 mine(s) in Libby, Montana.

Report renews concern about asbestos-like minerals at ...

Mar 07, 2016· Home » Report renews concern about asbestos-like minerals at sites in arid west. Environmental Health and Safety Today's News. FairWarning Reports. Report renews concern about asbestos-like minerals at sites in arid west. March 7, 2016. ... The minerals were contaminants of vermiculite ore from a large mine that operated near the town from ...

Vermiculite - Wikipedia, the free encyclopedia

but does not recommend its removal. Nevertheless, homes or structures containing vermiculite or vermiculite insulation dating from before the mid 1990s—and especially those known to contain the "Zonolite" brand—may contain asbestos, and therefore may be a health concern.

What is Vermiculite? - The Vermiculite Association

Vermiculite is mined using open cast mining techniques where the ore is separated from other minerals and then screened or classified into several basic particle sizes. Every care is taken in mining operations to minimize the impact on the environment and to restore land to its natural condition when mining ends.

LA – Not Just a Libby Risk | Center for Asbestos Related ...

Upon delivery, the ore was exfoliated. Exfoliation is a process in which vermiculite ore is heated at high temperatures to expand or "pop" it. These facilities are of particular concern because exfoliation released countless tons of asbestos-laden dust into the surrounding communities, at levels much greater than other processing methods ...

How vermiculite is made - material, history, used ...

Vermiculite ore deposits may also contain a variety of other materials such as mica, quartz, and feldspar. These deposits vary from one mining location to another. During the manufacturing process, some of these materials may pose potential health hazards to workers. In the United States and many other countries, these hazards are defined in ...

Vermiculite Insulation - - The ...

Asbestos contamination in vermiculite and vermiculite products has become a national concern to a variety of federal agencies (EPA, OSHA, CPSC and ATSDR) and to many private citizens throughout the country. ... Attic insulation produced using vermiculite ore, particularly ore that originated from the Libby mine, may contain asbestos fibers ...

VERMICULITE IS NOT ASBESTOS

the vermiculite in the rock. Vermiculite ores from some sources were even found to contain asbestos minerals but asbestos is not intrinsic to vermiculite and only a few ore bodies have been found to contain more than tiny trace amounts. Nevertheless serious public concern was generated because of …

Vermiculite | Avid Environmental

Vermiculite is a mica-like mineral mined around the world and used in a variety of commercial and consumer products because of it's insulating and fire-resistant properties. Of concern is vermiculite ore produced by the Libby Mine in Montana from 1924 into the late 1980's, the mine officially closed in 1990.

Ground Goop - who uses it? | Model Railroad Hobbyist magazine

Vermiculite is a mica-like mineral mined around the world and used in a variety of commercial and consumer products because it is fire-resistant and has good insulation qualities. Of concern is vermiculite ore produced by the Libby Mine in Montana from the 1920's to 1990.

Vermiculite is a porous mineral used as insulation, and to ...

Oct 08, 2012· Vermiculite is a mineral ore that is composed of hydrated laminar magnesium-aluminum-iron 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

Risk of Asbestos, who is at risk of asbestos, Complete ...

The insulation that raises the most concern is called Zonolite, derived from vermiculite ore in a now-closed, 80-year-old mine in Libby, Montana, last owned by W.R. Grace & Co. Hundreds of Libby miners and their relatives have died of asbestos-related diseases. The ore was sent to more than 700 locations throughout North America.

CDC - Vermiculite - NIOSH Workplace Safety and Health Topic

Overview. Vermiculite is a mineral that rapidly expands when heated. Expanded vermiculite is used in construction and consumer materials. Vermiculite 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.

STRATEGY FOR FURTHER ASSESSMENT OF VERMICULITE ORE ...

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 asbestos-contaminated ore from Libby, MT are of primary concern …

GAO-08-71 Hazardous Materials: EPA May Need to Reassess ...

exfoliation facilities that processed ore from the mine. 2 —and the need to avoid undue influence on the case, 3. we designed our methodology to . 2. Facilities that exfoliated the ore—or heated it until it expanded or popped—are of particular concern because this processing method released higher amounts of asbestos

What is Vermiculite Insulation? - Inspecnor

Vermiculite is a mica-like mineral mined around the world and used in a variety of commercial and consumer products because it is fire-resistant and has good insulation qualities. Of concern is vermiculite ore produced by the Libby Mine in Montana from the 1920's to 1990.

A risk assessment for exposure to grunerite asbestos ...

Vermiculite Ore Containing Tremolite Asbestos. The mineral vermiculite has the generalized chemical formula (Mg, Ca) 0.35 (Mg, Fe, Al) 3 (Al, Si) 4 O 10 (OH) 2 nH 2 O. On heating, the mineral loses water rapidly and expands to form a lightweight aggregate used for various purposes, e.g., insulation, soil conditioning, and filter medium.

Health Assessment Document for Vermiculite

Based on a production volume of 1 million tons (1.2 x 109 kg) of vermiculite ore mined and beneficiated in 1979 to produce 314 x 106 kg of crude vermiculite, approximately 802 x 103 kg were released into the air, 89,900 x 103 kg were released into water, and 2,490 x 103 kg were released as solid waste.

Environmental Concerns - Vermiculite Insulation

May 17, 2011· The concern with having vermiculite insulation in the attic is the potential for contamination with asbestos fibers. Between 1919 and 1990 approximately 70% of vermiculite was mined in Libby, Montana which also happened to contain a deposit of asbestos.

Fatal Asbestosis 50 Years after Brief High Intensity ...

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.

Vermiculite Insulation and Potential Health Concerns ...

Approximately 80% of vermiculite ore mined worldwide came from the Libby, Montana mine from 1924 to 1990. The ore from this mine also included a natural deposit of amphibole/tremolite asbestos. Much of the vermiculite from Libby was contaminated with asbestos. Asbestos fibers are invisible to the eye and can only be professionally detected.

EPA/Asbestos/Vermiculite Fact Sheet - University of …

What is vermiculite and where does it come from? Vermiculite is produced from ore mined throughout the world. In the United States, mines are located in Montana, South Carolina, and ia. When heated, the ore expands into a light, rather fluffy material, that is fire resistant, chemically inert, absorbent, light weight, and odorless.

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

Health Canada Vermiculite Insulation Containing Asbestos

Of concern is vermiculite ore produced by the Libby Mine in Montana from the 1920's 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 vermiculite-based insulation.

What is vermiculite? - My Legal Briefcase

Of particular concern is vermiculite ore produced by the Libby Mine in Montana from the 1920's to 1990, which was sold as Zonolite Attic Insulation and once supplied more than 80 percent of the world's vermiculite needs.