The Lacuna Project

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Exhibit 197

Annual Report on the Environment in Japan 2006: Fifty Years of Minamata Disease

Exhibit 197 · Government report

Annual Report on the Environment in Japan 2006: Fifty Years of Minamata Disease

The mass media reported that the equipment would purify wastewater, but it was not designed to remove mercury, failing to remove water-soluble methyl mercury compounds.

Describes ineffective wastewater equipment, delayed government action, and continuing victim claims.

Source
Ministry of the Environment, Japan
Date
2006
Quoted from
Overview 2, Section 2 "Emergence and Expansion of Minamata Disease", p. 21 (parenthetical)
Grade
Primary record
Document
https://www.env.go.jp/content/900457263.pdf
Accessed
2026-11-09
Cited by
Findings citing this exhibit

Cited by

Finding MED-11.2
Primary record Chisso’s 1959 wastewater equipment failed to remove methylmercury, while the government delayed its official conclusion on the cause until 1968.