Title: Tsūshi Ashio kōdoku jiken
Subjects: Biography, Conservationists, Copper mines and mining, Environmental aspects, Environmental aspects of Copper mines and mining, Environmental policy, History
Places: Ashio-shi, Ashio-shi (Japan), Japan, Watarase River Watershed, Watarase River Watershed (Japan)
People: Shōzō Tanaka (1841-1913)