Asbestos is a naturally occurring mineral that was widely used in construction and other industries until the 1980s. It was used because of its heat-resistant properties and durability. However, it was later discovered that exposure to asbestos fibres can lead to serious health problems.

When asbestos-containing materials are disturbed, they can release tiny fibres into the air that can be inhaled. These fibres can become trapped in the lungs and cause damage over time, leading to lung diseases such as asbestosis and mesothelioma.