an incombustible, chemical-resistant, fibrous mineral used for insulation, fireproofing, building
materials, brake linings, chemical filters and in
materials that deaden
sound.
any of several grayish minerals that separate into long, threadlike fibers. Because certain varieties do not
burn, do not conduct
heat or
electricity and are often resistant to chemicals, they are used for making fireproof
materials,
electrical insulation, roofing, filters, etc. Known to
cause lung cancer when inhaled.