vermiculite ore mine

Vermiculite Home Page for Information about Vermiculite

The Palabora Vermiculite Mine Recently there has been a lot of confusion about vermiculite and asbestos. Recent newspaper articles, a 20/20 show, National Public Radio, McCall's magazine, and Newsweek, for instance, have addressed problems at the former Libby, Montana mine which has been closed since 1990. Get price

Schundler Company Vermiculite Technical Information

It is not found in measurable levels in any of the currently used vermiculite deposits and most specifically not in the Palabora Mine (South African) which supplies ore to The Schundler Company. Asbestos was present in the infamous Libby, Montana mine described in news stories and more recently in articles in McCall's and People magazines. Get price

Community Exposure to Asbestos From a Vermiculite Exfoliation

time purchased the vermiculite mine and associated processing facilities in Libby, MT. The plant produced vermiculite prod-ucts from ore mined and processed in Libby through the use of two expansion furnaces, which heated the ore to approx-imately 2000 Get price

What is Vermiculite? What is it used for?

The vermiculite mined at Libby was found to contain a dangerous type of asbestos, which naturally grew alongside the vermiculite, and the mine was permanently closed in 1990. Vermiculite sold today is subject to strict industry protocols that ensure it is safe to use. Get price

DEPARTMENT OF HEALTH HUMAN SERVICES

2004/12/7Brown #2 mine in Woodruff, South Carolina. Two facilities used ore from the ia Vermiculite Ltd., R.E. Sansom Mine and Mill in Louisa, ia. Lastly, two facilities imported ore from Palabora Mining Co. Ltd. located in Phalaborwa, South Africa. Thus, Get price

Hazardous Substance Tools: What about vermiculite?

Vermiculite is a mineral ore that has been expanded to produce the familiar light granules that are sometimes used as loose fill insulation. Only a few vermiculite ores contain asbestos. However, between 1960 and 1990, 70 percent of the world's vermiculite ore came from a mine in Libby, MT, and was marketed as Zonolite. Get price

U.S. Government Accountability Office

According to an EPA database compiled from W.R. Grace shipping invoices, 396,910 tons of vermiculite ore from the Libby mine were shipped to this site between January 1967 and March 1993. EPA confirmed that a vermiculite exfoliation facility had operated at this site from approximately 1953 until 1992 and that the raw vermiculite ore processed at the site came from the Libby mine. Get price

ehp ENVIRONMENTAL HEALTH PERSPECTIVES

high concentrations of vermiculite ore. The ore was mined beginning in the 1920s by the Zonolite Company and then later by W.R. Grace, which bought the mine in 1963. It is estimated that between 1924 and 1990, when the mine was closed, a total of 5.8 Get price

Characterization of historical amphibole samples from the former vermiculite mine

(Gunter et al., 2005b, 2007). The vermiculite ore was removed by surface mining methods. At its largest extent, the mine covered several hundred acres. A complete review of the geology, mining, and health effects of the RainyCreek Complex isgivenin Bandli Get price

vermiculite ore minerals

Vermiculite ore is invariably an alteration product of a variety of mafic minerals: biotite, phlogopite, rarely muscovite, diopside, tremolite, augite, hornblende, olivine, chlorite, and serpentine. All known deposits have formed in the zone of circulating groundwater above the water table. Get price

vermiculite mines commercial

Since 1978 ia Vermiculite LLC has been the sole commercial producer of vermiculite in ia operating a surface mine just west of Trevilians in Louisa County. This mine is one of two in the United States that in 2016 actively mined and processed vermiculite concentrate (Tanner 2017). Get price

Schundler Company Vermiculite Technical Information

Ongoing testing at this major domestic supplier of crude vermiculite ore has continued ever since. In all of these test, the mine has been able to operate and sell vermiculite ore in full compliance with OSHA, MSHA, and EPA regulations. Vermiculite from Yuli Get price

Palabora Mining Company Ltd

Palabora has developed a US$410 million underground mine with a production capacity of 30,000 tonnes of ore per day. Palabora also owns a nearby vermiculite deposit which is mined and processed for sale worldwide. Vermiculite is a versatile industrial mineral Get price

U.S. Government Accountability Office

Vermiculite mine Unknown Yes-October 11, 2000 Yes This mine started operating in 1979 and was still in operation at the time of EPA's investigation. EPA investigated the ia Vermiculite site because it was the source of vermiculite ore for the LaFarge Get price

Mining Equipment Vermiculite

Mining Equipment Vermiculite Product specification: 0.03-1mm Processing capacity: 2-40t/h Application area: ore separating plant and others Raw materials: iron ore, ilmenite, chromite, pyrite, zircon, rutile, monazite, tungsten ore, tin ore and colombite ore, etc. Get price

E ARA VERMICULITE MINE DEVELOPMENT DRILLING AND

planning, validation of vermiculite flake size, bulk density, Mineral Resource and Mine Ore Reserve estimation and classification upgrade work. Drilling completed north west ("P2") and north east ("P3") of the current open pit with results to be Get price

US: Vermiculite Products Could Expose Consumers to

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. Get price

Vermiculite: Mineral information, data and localities.

Davis Pyrite Mine (Davis Mine; Davis Sulfur Ore Mine) Cerato, A.. 2003: Mineralogical Study of Davis Mine, Rowe, MA, Using X-Ray Diffraction Techniques Hampshire Co. Pelham Pelham asbestos mine Emerson, B.K. Geology of Massachusetts and Get price

Hazardous Substance Tools: What about vermiculite?

Vermiculite is a mineral ore that has been expanded to produce the familiar light granules that are sometimes used as loose fill insulation. Only a few vermiculite ores contain asbestos. However, between 1960 and 1990, 70 percent of the world's vermiculite ore came from a mine in Libby, MT, and was marketed as Zonolite. Get price

STRATEGY FOR FURTHER ASSESSMENT OF VERMICULITE ORE

vermiculite ore shipped from the Libby mine. The non-exfoliation sites also had fewer material handling and processing steps (e.g., receiving shipments as bagged product vs. in bulk via railcar). o For instance, at gypsum wallboard manufacturing facilities (the Get price

Deposit Vermiculite Mine Near Franklin, North Carolina

The Deposit Vermiculite Mine was closed at the time of data entry with no known plans to re-open. Production size when active was considered to be small. The ore mined is composed of olivine, chromite and asbestos with waste material consisting primarily of Get price

Morbidity and mortality of vermiculite miners and millers

The vermiculite ore and concentrate of a mine and mill near Libby, Montana, was found to be contaminated with fibrous tremolite-actinolite. Of 599 fibers (length greater than 5 microns and width greater than 0.45 micron) counted in eight airborne membrane filter samples, 96% had an aspect ratio greater than 10 and 16% had an aspect ratio greater than 50. Get price

Vermiculite Mineral Specimen For Sale

Vermiculite - Phyllosilicate - Monoclinic - Not a Mica group member. But is micaceous. A member of the Montmorillonite-Vrmiculate group with 2:1 layering, meaning there are two (T) tetrahedral layers with an (M) octahedral layer in between. There is no (I) interlayer and the 2:1 layers are instead held together by weak Van der Waals bonds. Requires Biotite, Chlorite, Hornbelnd and Serpentines Get price

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 n H 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. Get price

WOLFF MLLER Baustoffe

The produced ore is processed in a modern vermiculite concentration factory, which has the capacity of 20 000 T of concentrated crude vermiculite per year. The factory operates with brand new machines and qualified personnel, which gives us maximum effectiveness and high achievements. Get price