May 15, 2010September 29, 2022FY2010 Follow-up survey of landslide caused by the 2004 Chuetsu earthquake in Niigata Pref. 2004年新潟県中越地震で生じた地すべりの継続調査
January 15, 2010September 29, 2022FY2010 Technical visit to construction site of highway embankment in Ibaraki Pref. 高速道路の盛土施工現場見学（茨城県）
