About OKUNO Koichi
About Hazama Technical Res. Inst., Ibaraki, JPN
About KAWAI Masayoshi
About High Energy Accelerator Res. Organization(KEK), Ibaraki, JPN
About YAMADA Hitoshi
About Hazama Technical Res. Inst., Ibaraki, JPN
About Nuclear Technology
About neutron
About radiation shielding
About concrete
About californium 252
About Monte Carlo method
About ore
About コレマナイト
About Radiation shielding
About Particle accelerators in general and theory
About 中性子遮蔽
About コンクリート
About 開発