10:00 AM - 12:00 PM
○Hiroshi Asahi1, Hiromichi Takebe2, Atsushi Shibayama3, Etsuro Shibata4, Taro Kamiya5, Yoshinori Yajima6, Shuichi Ogasawara1, Satoshi Asano1, Keiko Sasaki7 (1. Sumitomo Metal Mining Co., Ltd., 2. Ehime University, 3. Akita University, 4. Tohoku University, 5. Japan Organization for Metals and Energy Security, 6. Japan Mining Industry Association, 7. Kyushu University)