Dangerous Fibers Found in Old Building Materials

This page is the CodyCross answer for the clue below from World of Books, Group 297, Puzzle 4 (Publishing Company).

Question is: Dangerous Fibers Found in Old Building Materials

and the answer is: ASBESTOS

Word Meaning:

ASBESTOS — (mineralogy) Any of several fibrous mineral forms of magnesium silicate, used for fireproofing, electrical insulation, building materials, brake linings, chemical filters, suits, fireman's gloves, etc.

Definitions from Wiktionary.

Dangerous fibers found in old building materials — CodyCross Answer | CodyCross Solutions