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9 comments
Omeger
30.04.2019 01:44
LinkAsbestos is a set of six naturally occurring silicate minerals,[1] which all have in common their asbestiform habit: i.e., long (roughly 1:20 aspect ratio), thin fibrous crystals, with each visible fiber composed of millions of microscopic "fibrils" that can be released by abrasion and other processes.[2] The minerals are chrysotile, amosite, crocidolite, tremolite, anthophyllite, and actinolite.
Asbestos has been mined for over 4,000 years, but large-scale mining began at the end of the 19th century, when manufacturers and builders began using asbestos for its desirable physical properties.[1] Some of those properties are sound absorption, average tensile strength, affordability, and resistance to fire, heat, and electricity. It was used in such applications as electrical insulation for hotplate wiring and in building insulation. When asbestos is used for its resistance to fire or heat, the fibers are often mixed with cement or woven into fabric or mats. These desirable properties led to asbestos being us
Nighteye[OP]
30.04.2019 01:44
LinkSexy