Q&A/ 2024-2025.
Chrysotile - Answer: The only asbestos mineral found in the serpentine group and
the most common in the USA at 90-95%. "White Asbestos"
Amosite - Answer: Second most likely found asbestos. "Brown Asbestos" 5-10%
Crocidolite - Answer: "Blue Asbestos" 1-5%
Actinolite - Answer: Can be in vermiculite (often associated with Tremolite) no
current production.
Tremolite - Answer: Can be in Vermiculite. Some current production in India.
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, Anthophyllite - Answer: Rare. No current production.
Serpentine - Answer: Long-wavy structure
Amphibole - Answer: Short; rigid structure; most hazardous
Friable ACM - Answer: can be crumbled, pulverized, or reduced to powder by
hand. > 1% ACM
Non-friable ACM - Answer: cannot be pulverized by hand. > 1% ACM
Three categories of ACM in buildings: (according to EPA) - Answer: Surfacing
Materials (sprayed or troweled)
Thermal System Insulation (TSI)
Miscellaneous (ceiling tile, drywall, floor tiles)
What is the typical latency period for asbestosis? - Answer: 10-20 years
What part of the lungs does asbestosis affect? - Answer: the alveoli
What is the typical latency period for Mesothelioma? - Answer: 30-40 years
What part of the lungs does Mesothelioma affect? - Answer: affects the
mesothermic layer of the lungs
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