95 percent of asbestos is chrysotile in the world. Chrysotile production one of the largest and most widely distributed, accounting for more than 98% of the total output. Chrysotile fibers can be divide into per fiber. The diameter of fiber per 0.5-micron, Length is 5 microns, They can be suspended in the water or air for several weeks, months. They can continue to pollute the air and water. Studies have shown that Asbestos can cause some occupational diseases, Such as lung cancer, asbestos cancer, mesothelioma. Asbestos was widely used in all walks of life For example, asbestos mining, construction, ship and auto repair, metallurgy, textile, mechanical and electrical engineering, chemistry, agriculture, etc. US Environmental Protection Agency has restricted the use of asbestos products. Asbestos-related occupational diseases caused 1.2 million deaths during 1980-2003 in Germany. The death toll reached 2,000 people per day because asbestos causes cancer in France. There are 20,000 cases of asbestos cancer are reported In the United States during the period 1990-1999. In 1998, WHO has reaffirmed the carcinogenic effects of chrysotile asbestos. Chrysotile asbestos can cause increased mesothelioma. WHO calls for using asbestos substitutes. Many countries have banned the use of any asbestos products.
Asbestos fibers are the main factors leading to mesothelioma. Asbestos is a naturally occurring fibrous mineral aggregates can be split into thin and flexible fiber. Asbestos fibres, resistant to heat, fire and chemicals, were widely used in construction and insulation before being linked to asbestosis, lung cancer, mesothelioma and other cancers. Mesothelioma cancer is the direct result of exposure to disturbed asbestos, where the fibers become airborne. These airborne asbestos fibers can then be easily ingested or breathed in by those in the vicinity that are not wearing adequate protection. In essence though, pleural mesothelioma develops when jagged asbestos fibers are inhaled and settle in and around the lungs.
Asbestos exposure is the main factor cause the asbestos workers with a high risk of asbestos cancer. Bronchogenic carcinoma is estimated to develop in 20% to 25% of asbestos workers who are heavily exposed. The association between asbestos exposure and bronchogenic carcinoma is now accepted as being causal in nature. While science has conclusively shown that mesothelioma is caused only by asbestos exposure, the actual biological processes by which it develops are still being investigated. There is a typical latency period of approximately 20 years, and the greater of exposure to asbestos, and higher the risk of lung cancer. Remember : Many people who develop mesothelioma due to asbestos exposure may be eligible for compensation.
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Source: http://ezinee.info/2011/10/asbestos-fibers-are-the-main-factors-leading-to-mesothelioma.html
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