The stress and strength at hypocenters at Tau Tona and Mponeng gold mines, South Africa

Hiroshi Ogasawara1,2, Gerhard Hofmann3, Harumi Kato4, Chris Stander3, Trevor Clements5, Phil Piper5, Dave Roberts3, Yasuo Yabe6, Makoto Naoi2,7 and Masao Nakatani2,8, (1)Ritsumeikan Univ, Kusatsu, Japan, (2)SATREPS, Tokyo, Japan, (3)Anglogold Ashanti, Rock Engineering, Western Levels, South Africa, (4)3D Geoscience, Tokyo, Japan, (5)Groundwork (Pty) Ltd, Johannesburg, South Africa, (6)Tohoku University, Graduate School of Science, Sendai, Japan, (7)Kyoto University, Graduate School of Engineering, Kyoto, Japan, (8)Univ Tokyo, Tokyo, Japan
Abstract:
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