Asbestos is a naturally occurring silicate mineral that was widely used in construction and other industries from the 1950s to the 1980s. It was prized for its heat resistance, insulation properties, and durability. However, extensive use of asbestos was stopped when it was discovered to have serious health hazards.

Asbestos can cause several serious illnesses, including asbestosis, lung cancer, and mesothelioma. Its microscopic fibers, when inhaled, cause damage to the lungs and can lead to these diseases, which can be fatal. Asbestos is considered a hazardous substance by the UK government, and strict regulations are in place to control its use and disposal.