The overall objective of Mixed Reality Application for Improving Mine Safety Culture in Underground Mining (MR4MS) is to improve the mine safety culture of the mining industry and to decrease the rate of injuries and life losses in mine accidents. MR4MS covers the development of an Mixed Reality (MR)environment that simulates an underground coal mineby utilizing Virtual Reality (VR)and MR technologies. Within its scope, the project is highly correlated with the global objective of the call, to improve occupational health and safety conditions and implementation of coherent and comprehensive strategies.