THIS! IS! REAL naval asbestos mastic insulation EXPOSEDsteemCreated with Sketch.

in #dtube2 years ago

Asbestos, a set of six naturally occurring silicate minerals, all have in common their asbestiform habit: i.e., long, thin fibrous crystals, with each visible fiber composed of millions of microscopic "fibrils" that can be released by abrasion and other processes. They are commonly known by their colors, as blue, brown, white asbestos, and green asbestos.
Asbestos was mined more than 4,000 years ago, large-scale mining began at the end of the 19th century, when manufacturers/ builders began using asbestos for its physical properties. 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 hotplate wiring and 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 used very widely. Asbestos use continued to grow through most of the 20th century, until public recognition of the health hazards of asbestos dust led to its outlawing by courts and legislatures in mainstream construction and fireproofing in most countries.
Inhalation of asbestos fibers cause serious and fatal illnesses including lung cancer, mesothelioma, asbestosis ( type of pneumoconiosis). Concern of asbestos-related illness in modern times began with the 20th century and escalated during the 1920s and 1930s. By the 1980s and 1990s, asbestos trade and use were heavily restricted, phased out, or banned outright in an increasing number of countries.

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