10:00 AM - 10:15 AM
*Kazuhiko Masumoto1, Tomoaki Matsushita2, Suguru Shirasagi1, Takashi Ueki3, Shinsuke Karasawa3, Daiki Makino3, Kazushige Wada4 (1.Kajima Technical Research Institute, 2.Kajima Corporation, 3.Matsunaga Geo-Survey Co., Ltd., 4.Mitsui Mineral Development Engineering Co., Ltd.)