About SHIMIZU YOSHIYUKI
About 日立造船
About SAITO TAKAYUKI
About 公害資源研
About TOJO CHIAKI
About 日立造船
About TOMISHIMA YASUO
About 公害資源研
About SUZUKI MOTOMITSU
About 日立造船
About YAMAZAKI TETSUO
About 公害資源研
About YOKOGAWA AKIRA
About 日立造船
About USAMI TAKESHI
About 公害資源研
About manganese nodule
About Special minings
About 立型
About 水槽
About エア
About リフト装置
About 非定常
About 鉱
About 研究