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Tsuyoshi HARAGUCHI
Fukken Co. Ltd.
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Makoto OKAMURA
Departrment of Geology, Faculty of Science, Kochi University
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Hiromi MATSUOKA
Departrment of Geology, Faculty of Science, Kochi University
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Kazumi MATSUOKA
Department of Geology, Faculty of Liberal Arts, Nagasaki University
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Seiji KONDO
Kyusyu Office, Penta-Ocean Construction Co. Ltd.