Mine site security is an open challenge due to the complexity of this type of infrastructure, the variety of physical and digital components, the distribution of assets and machinery and the large number of stakeholders involved. In recent years, mining operators have adopted digital components (ICT) but still use archaic/manual processes to collect and process the data, thus making the protection of the mining critical assets a costly and highly complex problem. In this context, one of the most sensitive physical assets to be secured to guarantee mines infrastructure safety is Tailings Storage Facilities (TSFs), which are complex structures whose physical parameters need to be continuously monitored, understood and modelled so that dramatic failures can be prevented or at least minimized. The objective of the mini-symposium is to overview the latest efforts for the tailing dams modelling and monitoring. We anticipate talks on the following topics: - Efforts at the European level to leverage advanced monitoring and modelling strategies for TSFs - The challenges of TSFs’ traditional monitoring and future trends - Methods for data assimilation and modelling of TSFs