Asbestos is a useful, even indispensable component of. many materials with which we come into daily contact. It has unique properties of heat resistance and durability and is cheap and abundant. Unfortunately, it is a serious threat to the health of those who handle it carelessly over a long period of time, and its dangers went unrecognized for many years after it was put into widespread use.
The first ill effect to be recognized in asbestos workers was pulmonary fibrosis, termed asbestosis,...