These proceedings present the outcome of the eighth symposium on naturally occurring radioactive material (NORM). The symposium which provided an important opportunity to review recent technical and regulatory developments concerning exposure to NORM, with the overall objectives of addressing radiation protection issues, discussing the results of new research, exploring practical case studies of industrial applications and identifying new societal needs and technical requirements for regulatory bodies and industries involving NORM. The symposium provided a platform for experts from industries, academic and research institutions and regulatory bodies from all over the world to share experiences, to identify opportunities, to analyse current challenges, and to review progress made in identifying, quantifying and managing the radiological risks associated with industrial processes involving NORM. Ongoing activities to implement new international standards during the period since the last NORM symposium in 2013 provided an important backdrop to the presentations and discussion. The proceedings contain 31 papers that were accepted for oral presentation, text versions of 35 poster presentations and a summary that concludes with the main findings of the symposium.