Since the publication of the first edition in 1969, Fundamentals of Rock Mechanics has been widely regarded as the most authoritative and comprehensive book in its field. This classic book, unavailable for many years, is now back by popular demand. Extensively revised for this fourth edition, it now contains substantially expanded chapters on poroelasticity, wave propagation, and subsurface stresses, as well as entirely new chapters on rock fractures and micromechanical models of rock behavior.