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Topic: Asbestos

	ATSDR - ToxFAQs™: Asbestos
		Asbestos is the name given to a group of six different fibrous minerals (amosite, chrysotile, crocidolite, and the fibrous varieties of tremolite, actinolite, and anthophyllite) that occur naturally in the environment.
		Asbestos minerals have separable long fibers that are strong and flexible enough to be spun and woven and are heat resistant.
		Asbestos mainly affects the lungs and the membrane that surrounds the lungs.
	www.atsdr.cdc.gov /tfacts61.html (1331 words)

	Asbestos (Site not responding. Last check: 2007-10-26)
		Asbestos was used in a wide varitey of building materials and building components during the twentieth century.
		The regulated asbestos minerals are the serpentine mineral chrysotile and the asbestiform varieties of the amphibole minerals grunerite (amosite), riebeckite (crocidilite), tremolite, actinolite and anthophylitte.
		Asbestos fibers are resistant to high temperatures, have high tensile strength, and in some cases can be woven into cloth.
	www.eia-usa.org /Technical/Asbestos/asbestos.html (711 words)

	Asbestos
		Asbestos" has been used (and continues to be used) in a wide variety of applications ranging from insulation material, plaster, paper, cement, friction material (e.g., clutch disks), gaskets, roofing material, flooring material and paint.
		Asbestos miners and millers, exposed to large concentrations of chrysotile and tremolite-actinolite-anthophyllite dust over long periods of time (10-30 years) and who also smoke, have suffered a significant excess mortality due to lung cancer and asbestosis -- but not to mesothelioma.
		Asbestos miners and millers, exposed to large concentrations of crocidolite and amosite dust over moderate periods of time (5-10 years) and have suffered a significant excess mortality due to lung cancer, asbestosis and to mesothelioma.
	darkwing.uoregon.edu /~jrice/geol_311/Asbestos.html (1838 words)

	Asbestos - NIOSH Topic Page
		A fiber of asbestos or related substance is coated by an iron-protein complex and surrounded by macrophages.
		The term "asbestos" is not a mineralogical definition but a commercial name given to a group of minerals that possess high tensile strength, flexibility, resistance to chemical and thermal degradation, and electrical resistance.
		Although the use of asbestos and asbestos products has dramatically decreased, they are still found in many residential and commercial settings and continue to pose a health risk to workers and others.
	www.cdc.gov /niosh/topics/asbestos (1283 words)

	[No title]
		Asbestos is the name given to a fibrous mineral found in ore-bearing rock mined from an open pit or an underground mine.
		Asbestos is still used in some products, but federal and state laws and regulations prohibit asbestos from being used in most indoor construction materials.Today asbestos fiber is used as a filler and reinforcer in asphalt and tar-based surface coatings.
		Asbestos removal is not required and, in fact, federal regulators say they would like to see the asbestos stay where it is as long as the insulating material is wrapped and covered.
	www.webshells.com /ocaw/txts/doc999902.htm (1750 words)

	Asbestos, CDFS-187-95 (Site not responding. Last check: 2007-10-26)
		Because asbestos is only a generic name for fibrous aggregates of minerals, specific types need to be identified to understand their variations.
		When asked if it were safer to leave asbestos in place, the majority replied that it was worth the short-term risk to increase the airborne fibers in renovation for the permanent removal benefits.
		Asbestos management does include a range of variables, therefore careful evaluation and scientific analysis are necessary on a case-by-case basis.
	ohioline.osu.edu /cd-fact/0187.html (997 words)

	2001.09.16: (Fact Sheet) Asbestos
		Asbestos is a naturally occurring strong mineral fiber that is resistant to heat and has many desirable properties.
		Because asbestos fibers are resistant to heat and most chemicals, they have been used as insulation materials in many residential and commercial buildings throughout the country.
		Asbestos exposure becomes a health concern when high concentrations of asbestos fibers are inhaled over a long time period.
	www.hhs.gov /news/press/2001pres/20010916a.html (562 words)

	Asbestos
		Asbestos is a naturally occurring mineral that appears in a fibrous and fluffy form when separated from rock in the asbestos mining process.
		Asbestos is a microscopic fiber that has been bound together with other products in varying amounts to from a matrix that is usually not hazardous when left undisturbed.
		After asbestos removal is completed, air within the enclosure is misted with a penetrating sealant that bonds to invisible airborne particles, allowing them to settle to the floor in a non-hazardous condition.
	www.aqhiinc.com /asbestos.asp (1104 words)

	Asbestos
		In fact, asbestos containing material is not generally considered to be harmful unless it is releasing dust or fibers into the air where they can be inhaled or ingested.
		Asbestos pipe and boiler insulation does not present a hazard unless the protective canvas covering is cut or damaged in such a way that the asbestos underneath is actually exposed to the air.
		Approximately 2 percent of all miners and textile workers who work with asbestos, and 10 percent of all workers who were involved in the manufacture of asbestos-containing gas masks, contract mesothelioma.
	www.pp.okstate.edu /ehs/modules/asbestos/asbharm.htm (947 words)

	Asbestos Information, Regulations, Free Downloads, Support, Interpretation, Training Materials and more from ...
		However, if asbestos should become airborne and is inhaled, it can remain in the lungs for a long period of time, producing the risk for severe health problems that do not appear until many years later.
		Asbestos comprised 5 - 95 percent of the fireproofing mixture and was used in conjunction with materials such as vermiculite, sand, cellulose fibers, gypsum and a binder such as calcium carbonate.
		Asbestos is rarely used alone, and it is generally safe when combined with other materials with strong bonding agents.
	www.ehso.com /asbestos.htm (2176 words)

	Asbestos
		Asbestos is likely to be found in buildings constructed before 1979 and almost certain to be present in those built before 1950.
		Asbestos was often sprayed or trowelled on ceilings and walls for thermal, acoustical, and decorative purposes.
		Disposal of Asbestos Containing Material from a renovation at a residential single unit dwelling, which is being performed by the owner/occupant, must be disposed of in accordance with state and federal regulations.
	www.vcapcd.org /asbestos.htm (1854 words)

	Asbestos, Bureau of Remediation and Waste Management, Maine Department of Environmental Protection
		Asbestos is a naturally occurring mineral, very strong and heat resistant, which was made into nearly three thousand products ranging from pipe insulation to cement wallboard.
		Asbestos has been proven to cause lung cancer, mesothelioma, and asbestosis, and needs to be treated with respect and handled by professionals under controlled conditions.
		Once a decision has been made to impact asbestos-containing materials (ACM), such as pipe insulation, boiler breeching, vinyl asbestos tile, transite (cement board), siding or roofing, in amounts greater than 3 linear or square feet, it must be removed or repaired by professionals unless specifically exempted from the DEP regulations.
	www.maine.gov /dep/rwm/asbestos/index.htm (307 words)

	Asbestos-Related Disorders - Lungs: pulmonary and respiratory health and medical information produced by doctors
		Asbestos is a family of naturally occurring silica compounds (similar to, but not the same as, the silica of window glass and computer chips).
		Lung disease from exposure to asbestos can be divided into three main types; asbestosis, disease of the lining of the lung (pleura), and lung cancer.
		Most current patients were once exposed to asbestos in mines, mills, factories, or homes with asbestos, either in the process of carrying, installing, or removing asbestos, or while cleaning items laden with asbestos dust.
	www.medicinenet.com /asbestos-related_disorders/article.htm (606 words)

	Asbestos definition - Cancer information on MedicineNet.com
		Asbestos is a group of six different fibrous minerals: The six minerals are amosite, chrysotile, crocidolite, and the fibrous varieties of tremolite, actinolite, and anthophyllite.
		Asbestos mainly affects the lungs: Changes in the membrane surrounding the lung are common in workers exposed to asbestos.
		Asbestos is a known carcinogen: There are two types of cancer caused by exposure to high levels of asbestos: cancer of the lung tissue itself and mesothelioma, a cancer of the membrane that surrounds the lung and other internal organs.
	www.medterms.com /script/main/art.asp?articlekey=2360 (835 words)

	NJDEP-Guidance Document For Management of Asbestos
		If the ACM being removed contains 1% or more of asbestos and is from a residential building or commercial facility and is a Category I non-friable asbestos material that is not in poor condition and is not friable, this waste may also be disposed of as ID 13C, construction and demolition debris.
		No transporter shall transport asbestos and/or ACM unless such waste is properly packaged in accordance with 40 C.F.R. The asbestos or ACM shall be transported in a manner that prevents the rupture of the asbestos containers in loading, transport, and unloading operations.
		Once collected, asbestos and/or ACM shall be transported directly from the point of generation to the solid waste landfill or transfer station permitted to receive such wastes.
	www.state.nj.us /dep/dshw/rrtp/asbestos.htm (2541 words)

	Asbestos - Wikipedia, the free encyclopedia
		Asbestos (a misapplication of Latin: asbestos "quicklime" from Greek ἄσβεστος: a, "not" and sbestos, "extinguishable") describes any of a group of minerals that can be fibrous, many of which are metamorphic and are hydrous magnesium silicates.
		Asbestos was used in fabrics such as Egyptian burial cloths and Charlemagne's tablecloth (which according to legend, he threw in a fire to clean).
		Asbestos is used in brake shoes and gaskets for its heat resistance, and in the past was used on electric oven and hotplate wiring for its electrical insulation at elevated temperature, and in buildings for its flame-retardant and insulating properties, tensile strength, flexibility, and resistance to chemicals.
	en.wikipedia.org /wiki/Asbestos (2769 words)

	Asbestos (Site not responding. Last check: 2007-10-26)
		Asbestos (CAS# 1332-21-4) is a generic term for a group of six naturally occurring fibrous minerals: amosite (CAS# 12172-73-5), chrysotile (CAS #12001-29-5), crocidolite (CAS #12001-28-4), and the fibrous varieties of tremolite (CAS# 14567-73-8), actinolite (CAS# 13768-00-8), and anthophyllite (CAS#17068-78-9).
		Because asbestos fibers are considered to be carcinogenic and may produce adverse health effects in exposed persons, all new uses of asbestos have been banned in the United States by the EPA.
		Asbestos workers have increased chances of getting two types of cancer: cancer of the lung itself, and mesothelioma, a cancer of the thin membrane that surrounds the lung and other internal organs.
	www.nsc.org /ehc/chemical/asbestos.htm (1419 words)

	Asbestos and Industrial Hygiene (Site not responding. Last check: 2007-10-26)
		Asbestos is a naturally occurring mineral found in certain rock formations, mined from open pit mines.
		Asbestos is a hazardous air pollutant that is regulated by the state and federal governments.
		Asbestos in schools—We provide technical assistance for the public and private schools that are subject to the 1987 Asbestos Hazard Emergency Response Act (AHERA).
	www.mde.state.md.us /Programs/AirPrograms/Asbestos/index.asp (474 words)

	Mineral Information Institute - Asbestos (Site not responding. Last check: 2007-10-26)
		"Asbestos" refers to a small number of minerals that are formed of flexible fibers, and have the useful physical property of being very heat resistant.
		The tonnage of asbestos used worldwide is in a slow decline, as, for health reasons, many countries have restricted or altogether banned the use of asbestos.
		The former uses of asbestos in building construction (fireproof ceiling panels in schools, for example) have largely disappeared, although asbestos is still used in making asbestos-cement products, automobile and truck brakes, roof castings, and applications where the fibers are encased in other materials and are unlikely to become free-floating.
	www.mii.org /Minerals/photoasbes.html (449 words)

	Asbestos
		Asbestos is a fibrous mineral that is chemically inert with heat resistant properties.
		Amphibole forms of asbestos may pose a greater health risk than the Chrysotile form because they are more rigid and less soluble, causing the particles to penetrate the lung tissue and remain within the tissue for a longer duration.
		Asbestos was also used circa 2,000-3,000 BC in Egypt to wrap embalmed pharaohs and in Finland to strengthen clay pots.
	www.heritageresearch.com /asbestos.htm (860 words)

	Asbestos: Environmental Health in Minnesota
		Asbestos is the name for a group of minerals that occur naturally in the ground.
		Chrysotile, sometimes called white asbestos, is composed of wavy, flexible white fibers and comprises 90 to 95 percent of the asbestos used in the U.S. Amosite, sometimes called brown asbestos, is composed of straight, light gray or brown fibers.
		Asbestos is mined out of the ground as an ore from open pit mines.
	www.health.state.mn.us /divs/eh/asbestos (463 words)

	Asbestos \| OPPT \| US EPA
		Asbestos is the name given to a number of naturally occurring, fibrous silicate minerals mined for their useful properties such as thermal insulation, chemical and thermal stability, and high tensile strength.
		Asbestos is commonly used as an acoustic insulator, thermal insulation, fire proofing and in other building materials.
		Asbestos is made up of microscopic bundles of fibers that may become airborne when asbestos-containing materials are damaged or disturbed.
	www.epa.gov /asbestos (488 words)

	Mesothelioma & Asbestos Cancer Resource
		Mesothelioma is a rare disease caused as a result of malignant cancerous cells lining the patient's body cavities such as chest, abdominal region or the area surrounding the heart.
		It is typically associated with exposure to asbestos which has been documented in as many as 70-80% of all mesothelioma cases.
		It is also known that family members of workers exposed to asbestos can contract this disease through exposure to the worker.s clothing.
	www.freewebs.com /mesothelioma (406 words)

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