What is Asbestos? (1) There are three main types of asbestos, blue (crocidolite), brown (amosite) and white (Chrysotile). They are all harmful but blue and brown asbestos are recognised as the most hazardous and have not been imported into the UK since 1985. However, they are still present in buildings and equipment produced before the ban. White asbestos was only banned in the U.K. in 1999.
It is asbestos dust or airborne fibres, which cause harm when inhaled or ingested. Asbestos materials left undisturbed probably poses no significant threat. Asbestos fibres are very fine and if they are breathed in they can reach the smallest areas of the lung where they cannot be breathed or coughed out. Once they have lodged in the lung the body’s defence mechanism tries to break them down and remove them which leads to swelling and inflammation in the surrounding area. The fibres can also penetrate the edge of the lung and settle in the pleural lining. The fibres can also be swallowed and in a similar way can lodge in the abdomen and work their way to the peritoneum that lines the abdomen where the same swelling and inflammation can occur. Source: http://www.mesothelioma.uk.com/index.php?pageno=127⊂=18
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