Minggu, 07 Oktober 2012

History About Asbestos

Asbestos is the name of a group of minerals that have been used as insulation material, especially in building products and slow the vehicle. "Asbestos includes chrysotile amosite, crocidolite, tremolite, anthophyllite asbestos, actinolite asbestos, and materials that have been chemically treated and / or altered." (Sheet O.S.H.A. fact osha.gov).

The first known use of asbestos dates back more than 5000 years and is used in products such as cremation and cloth hats and shoes. Even thousands of years ago, he saw the dangers of asbestos. Benefit  utility, however, is considered to outweigh the risks and continued use. There are many archaeological discoveries shroud, lamp wicks and asbestos clothing. The use of asbestos as insulation increased rapidly during the Industrial Revolution (1820-1870) and many asbestos mine / quarry open to extract the mineral (s). Extensive use of asbestos in factories, railroads and shipyards for protection from heat and flame. Asbestos is used to protect fireboxes of steam locomotives, pipes and boilers in factories and on ships and in various building materials.

In the 20th century, asbestos was used much more widely. It is used in fire-resistant coatings for many materials. It is used in drywall, roofing shingles, furniture, appliances, brick, concrete and mortar. 1900 show widespread use of asbestos in brake linings and pads vehicle clutch and brake lining, even in the elevator. Many schools and theaters also have curtain of asbestos ceiling tiles fire resistant properties and reducing sound. It is estimated that approximately 3,000 different asbestos-based products The 1940-1978 period saw the use of asbestos products were used almost exclusively for any use. That the necessary heat or sound insulation. In fact, E.P.A. estimated that there are 107 000 and 733 000 school buildings in the U.S. EPA Asbestos Containing. even trying to asbestos counted residential impact.

History of the discovery and use of asbestos and asbestos-related diseases in the context of the presence of asbestos in ophiolite complexes. By Malcolm Ross & P. Robert Nolan.

Inhalation of asbestos is known to cause diseases such as asbestosis and mesothelioma. In all but the rarest of cases, the disease was asleep (or at least not detectable) for decades before disease symptoms appear. For more information about the disease caused by the inhalation or ingestion of asbestos fibers, their symptoms, diagnosis and treatment.

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History About Asbestos - Asbestos Eksposure