About SHIBAYAMA ATSUSHI
About TONGAMU WIRIAMU
About HAGA KAZUHISA
About TAKASAKI YASUSHI
About copper ore
About arsenic
About leaching
About sodium compound
About arsenic compound
About precipitation (phase separation)
About separation
About mineral concentrate
About arsenate
About enargite
About Ore leaching
About ヒ素
About 銅鉱石
About アルカリ
About 浸出
About 析出