Asbestos - What Is It?

Asbestos refers to a group of naturally occurring minerals that form in bundles of fibers, which can be separated into thin threads. Known for their heat resistance, chemical durability, high tensile strength, and electrical resistance, these fibers were widely used for thermal and electrical insulation. Due to these properties, asbestos was commonly added to various building materials.

There are several types of commercial asbestos:

Chrysotile (White Asbestos) – The most commonly used type, accounting for about 99% of asbestos currently used in the United States.

Crocidolite (Blue Asbestos) – Known for its thin, needle-like fibers.

Amosite – Typically characterized by its brown fibers.

Anthophyllite – Usually found in shades of gray.

Asbestos fiber masses can easily break down into fine dust particles that become airborne and cling to clothing. When inhaled or swallowed, these fibers pose serious health risks. Asbestos-containing materials are classified into two categories: friable and non-friable. Friable materials can be crumbled into powder by hand pressure, making them more likely to release asbestos fibers into the air. These materials require strict control measures to prevent fiber exposure. Non-friable materials, on the other hand, are more stable and less likely to release fibers under normal conditions.

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Last updated on Apr 16, 2025

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Asbestos - What Is It?

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