Minamata disease was first discovered in Minamata city in Kumamoto prefecture, Japan, in 1956.It was caused by the release of methylmercury in the industrial wastewater from the Chisso Corporation's chemical factory, which continued from 1932 to 1968.The physicians were puzzled by her symptoms: difficulty walking, difficulty speaking, and convulsions.Two days later, her younger sister also began to exhibit the same symptoms and she, too, was hospitalised.In extreme cases, insanity, paralysis, coma, and death follow within weeks of the onset of symptoms.
The rapid expansion of the Minamata factory spurred on the local economy and as Chisso prospered, so did Minamata.
Initially producing fertilisers, the factory followed the nationwide expansion of Japan's chemical industry, branching out into production of acetylene, acetaldehyde, acetic acid, vinyl chloride, and octanol, among others.
The Minamata factory became the most advanced in all of Japan, both before and after World War II.
Neighbors have accused him of smearing feces on their door and having rage-filled outbursts so bad that they filed a restraining order against him.
He was also accused of being a deadbeat dad after allegedly leaving his daughter with her heroin-addicted mother.