About HARI AKIRA
About ITAKURA KEN'ICHI
About SATO KAZUHIKO
About TOMITA SHINJI
About ICHIHARA YOSHIHISA
About 釧路コールマイン
About 資源・素材学会北海道支部春季講演会講演要旨集
About acoustic measurement
About Rock burst,gas outburst,blooding,fall
About Coal mines,coal resources
About 音響計測
About 坑道
About 壁面
About 安定性評価
About 基礎
About 研究