About KATO YASUHIRO
About 東大 大学院工学系研究科 エネルギー・資源フロンティアセ
About rare earth element
About submarine sediment
About ocean floor resource
About problem
About mud
About resource development
About resource problem
About Mine,mineral and energy resources in general
About 太平洋
About レアアース
About 泥
About 日本