In this episode Linda Apthorpe, Consultant Occupational Hygienist and University Lecturer returns to discuss naturally occurring asbestos. Naturally occurring asbestos is the natural geological occurrence of asbestos minerals found in association with geological deposits including rock, sediments and soils. Generally, this refers to asbestos that has not been extracted or refined for commercial purposes and has been exposed unintentionally by excavation, road building or other construction or mining type works.