Asbestos is a naturally-occuring fibrous mineral of metamorpic hydrous magnesium silicate. The term "metamorphic" is used to describe a process of extreme heat and pressure which creates specific secondary patterns of minerals with new chemical and/or physical properties. As the primary rock is heated and recooled, silicate crystals align in long rows of mineral fibers, which easily separate into tiny shards thinner than a human hair. Asbestos fibers are not a health risk as long as they are undisturbed. However, when asbestos is undergoes natural weathering, or is mined and processed, the microscopic particles waft into the air and cause disease if they are inhaled.
Asbestosis occurs when an inhaled asbestos particle irritates the body's natural defence mechanis View the rest of this article
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