This chapter develops Special methods of testing rock and for analysis of rock slopes and structures constructed on rock. The study of rock mechanics is a large field, so only basic rock mechanics are covered here. Rock mechanics can be used in planning the dimensions, shapes, and orientations of the openings. It can also be used in the design of the support systems, the planning of blasting and excavation operations. The design process for excavations can involve performing two or three-dimensional stress analysis, and this commonly involves finite element or finite difference (FLAC) analysis. When the jointing is spaced widely or there are just a few well-defined joints, finite element programs can be used where the joints are specifically modelled in a continuum that is used to model the remaining rock mass. Rock bolts alone can be used if no shot-crete is deemed necessary to support the rock.