Jul 08, 2019· The EPA strongly recommends that a trained professional take the samples for you to test the vermiculite for asbestos. If you have loose fill vermiculite in your home as insulation, there is a chance that it contains asbestos. Until 1990, about 70% of the vermiculite mined in the US came from a single Montana mine that was contaminated.
In Libby, Montana, there are vermiculite mines that companies began operating in 1919. Vermiculite is a naturally occurring mineral that often contains asbestos. The miners and townspeople in Libby were completely unaware of the asbestos dangers surrounding the mining of vermiculite.
Unfortunately, the vermiculite from the Libby mine contained a type of naturally-occurring asbestos called tremolite-actinolite. How can I be exposed to asbestos in vermiculite? Not all vermiculite contains asbestos; however, some products have been made with vermiculite containing asbestos.
Jul 25, 2016· The EPA says that vermiculite insulation, which is the pebbly stuff found in attics of many older homes, is only risky if it contains more than 1 percent asbestos. That's good news, because most Zonolite, a vermiculite insulation, falls into that category.
Over 70% of vermiculite ore mined worldwide came from the Libby, Montana mine. 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.
Following the discovery of the presence of asbestos fibers in the vermiculite it produced, the Libby Mine closed in 1990 (in fact, little Zonolite was distributed after 1980). To date, no other vermiculite mines have been found to contain asbestos and periodic tests are done to make sure it stays that way.
Most asbestos-related diseases rarely occur until at least 15 years after first exposure to asbestos. How can workers be protected from asbestos-contaminated vermiculite? In general, any vermiculite that originated from the mine near Libby, Montana, should be regarded as potentially contaminated with asbestos.
Jan 03, 2007· Vermiculite from the mine near Libby, Montana, is contaminated with tremolite asbestos and other amphibole fibers (winchite and richterite). Asbestos-contaminated Libby vermiculite was used in loose-fill attic insulation that remains in millions of …
Apr 01, 2007· Vermiculite from the mine near Libby, Montana, is contaminated with tremolite asbestos and other amphibole fibers (winchite and richterite). Asbestos-contaminated Libby vermiculite was used in loose-fill attic insulation that remains in millions of homes in …
Concerns about Asbestos-contaminated Vermiculite Insulation. A mine near Libby, Montana, was the source of over 70 percent of all vermiculite sold in the United States from 1919 to 1990. There was also a deposit of asbestos at that mine, so the vermiculite from Libby was contaminated with asbestos.
Vermiculite Building Insulation: properties, uses, asbestos content. This article permits visual identification of vermiculite insulation; we include our own as well as US EPA photographs of various forms of vermiculite insulation to assist in recognizing vermiculite in buildings.
Asbestos exposure is a danger in all types of mining. However, vermiculite mining is especially risky. Vermiculite is a group of minerals that often contains contaminating minerals, including asbestos. Vermiculite is used in insulation, fireproofing materials, growing material for plants, and various construction materials. For decades, a large ...
In 1963 W. R. Grace and Company bought the local mine, by which time it was producing 80% of the vermiculite in the world. Because the local vermiculite contains asbestos, and the mine's byproducts were used in local buildings and landscaping, the town suffered from an …
Vermiculite Mining. Vermiculite is a member of the phyllosilicate group of minerals and is found in many parts of the world. Vermiculite can contain many other minerals, including asbestos. However, not all vermiculite is contaminated.
Mar 07, 2009· When WR Grace bought the mine in 1963 it was producing 80% of the world's vermiculite and Libby was proud of it. But naturally occurring amid the mineral were traces of a dangerous form of asbestos.
The Vermiculite Institute is being organized to provide a voice to those who desire a more proactive resource. It is true the Libby, Montana vermiculite mine contained asbestos; and it is true that many miners and some plant workers who had regular exposure to the mine and to the crude vermiculite from that mine have developed health problems.
Jul 08, 2012· Processed vermiculite from the WR Grace Libby MT Mine contained tremolite, a form of asbestos, that found it's way into local homes and has caused hundreds of cases of asbestos relelated disease ...
Most of the vermiculite used in the US prior to the 1990s came from one mine in Libby, Montana. Products from that Montana mine also contained asbestos, which contaminated the vermiculite. Asbestos is a fibrous mineral that occurs in nature in several forms. What are the health effects of asbestos? Inhalation of asbestos can cause lung problems.
Jul 11, 2019· Zimbabwean vermiculite is most sought on the international market due to its high grade, equally comparable to reputable global suppliers. Vermiculite also contributes to mining revenue, with export markets in America, Asia, Middle East, Australia, South Africa, while the European market chews up a bigger portion of Zimbabwean vermiculite.
Asbestos-related risks can be quite serious, and can lead to illnesses like specific types of cancer. In fact, in the town where the vermiculite mining took place, there were over 400 asbestos-related deaths that occurred just from the contamination of dust particles in the air.
Dec 07, 2014· Vermiculite itself does not contain asbestos; it was just the Libby, Montana mine which was contaminated because of the presence in the mountain of a secondary mineral called diopside. (To read more about diopside, go to sites like The Mineral Diopside.) In a simplified description, in the Libby deposit there was originally biotite and diopside.
Apr 26, 2016· Vermiculite insulation is way worse than I previously thought. I've known that vermiculite insulation can contain asbestos, and my advice to homeowners has always been to assume it contains asbestos and leave it alone, which is also the advice of the EPA.If the insulation needs to be removed or disturbed, my advice has previously been to recommend first having it tested for asbestos.
The Best Practices Program for Asbestos Detection and Control Protocol: Vermiculite Mining and Milling promotes mining operations that are following proper protocol for asbestos detection and control. This program requires participants to follow specific protocols related to many areas of internal controls.
Libby, Montana, is the site of one of America's worst man-made environmental disasters. Toxic asbestos dust from the vermiculite mines that helped the town prosper for decades has killed hundreds of residents, sickening thousands more.
The vermiculite/asbestos connection comes from a public health emergency caused by a vermiculite mine at Libby, Montana. The public health emergency is well documented in both US Environmental Protection Agency documents and in medical literature. Being a natural product, vermiculite can contain lots of different minerals and other substances ...
Vermiculite is a mineral used in a number of consumer products, including home insulation. Some vermiculite produced at Libby Mine in Montana from the 1920s until 1990, sold primarily under the brand name Zonolite®, has been found to contain asbestos. While not all vermiculite produced before 1990 ...
Vermiculite History & Properties Vermiculite discovery, mining history, properties, How to recognize vermiculite building insulation that may contain asbestos fibers - Vermiculite history & properties: This article describes the early history of discovery, description & mining of vermiculite and we describe the properties of vermiculite that have formed the basis of its widespread uses in many ...
Vermiculite produced by the Libby Mine has not been on the market in Canada for more than 10 years. Not all vermiculite sold in Canada before 1990 contains asbestos fibres. However, if you believe that your home may contain vermiculite insulation, it is reasonable to assume that it may be contaminated with asbestos.