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Advanced Fragmentation Techniques.
Advances in Rock Mech proc 3D Cong internat Soc Rock Mech 1974 1:1645-1663
Research on advanced fragmentation techniques is expanding to provide alternative fragmentation systems to overcome the disadvantages of conventional methods and to improve excavation rates. This paper reviews the state-of-the-art of the thermal, hydraulic, and chemical techniques and includes a description of an experimental tunnel excavated by projectile impact.
Advances in Rock Mech.,proc. 3D Cong.internat. Soc. Rock Mech., V.1, Pt. B, 1974, PP. 1645-1663