Ground freezing is a process by which in-situpore water is converted into ice. Like the cement in concrete, the ice bonds the soil particles together imparting strength and impermeability to the frozen soil mass. Continuous energy is usually required to establish and maintain a freeze wall for excavation and subsequent construction work; therefore, ground freezing is mostly used for temporary ground support and as a ground water control system. It is utilized on civil engineering projects for the construction of shafts, large open excavations, and tunnels. The application of ground freezing is the removal of toxic and hazardous wastes for environmental projects. It is mostly used for temporary ground support and as a groundwater control system in difficult geologic conditions.