Distributed fibre optic sensing (DFOS) is an innovative, yet rapidly growing technology that enables continuous and high-resolution measurement of multiple parameters along many kilometres of optical fiber cables. Silixa has been working with mines to deploy Rockmass Response monitoring solutions based on fibre optics sensing technology. In this paper, we review the recent advances and challenges of DFOS specifically in the field of underground geotechnical monitoring as well as tailings storage facility monitoring.