This presentation will start with a general description of the understanding of rock mechanics in the mining environment. Examples from Boliden mines of how high stresses on varying rock mass strength influences the mine infrastructure will be shown. An example of a ground fall due to high stress will also be presented that gives insight in how rock mechanics work is done in our mines today. Finally, some thoughts on ongoing research and development that may lead to technical solutions for tomorrow where the challenges with high stress in deep mines needs to be solved.