Toroku arsenic disease

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Toroku arsenic disease (土呂久砒素公害, Toroku hiso kōgai) was a disease resulting from air and water pollution from a refinery at a mine at Toroku, located in Takachiho, Nishiusuki District, Miyazaki, Japan.

It emitted arsenic-containing air, resulting in patients with chronic arsenic poisoning producing skin changes, skin cancers and sometimes lung cancer. The Sumitomo Metal Mining Co., Ltd., which bought the right of mining, was sued by the patients for health damage, but 15 years later, the lawsuit ended with a compromise.^{[citation needed]}