About HIRANO SHUJI
About JR東日本
About natural disaster
About typhoon
About rain storm
About heavy rainfall
About mudflow deposit damage
About track maintenance
About job
About disaster recovery
About railway line
About security
About safety management
About safety countermeasure
About track maintenance business
About security
About Natural disasters
About Track maintenance,prevention of railway disasters
About 台風
About 暴風
About 豪雨
About 被害