The tragic mercury poisoning epidemic at Minamata, Japan, serves as one of the critical first chapters in the history of the Toxic Century. The mercury spill in Minamata Bay in the 1950s constitutes one of the first expressions of the new landscapes that typify the Toxic Century. From 1932 to 1967, the Chisso Chemical Plant dumped mercury into the bay, from which local villagers subsisted on a fish-heavy diet. By the early 1950s, a growing number of animals and then residents were afflicted with a mysterious disease that flummoxed medical experts. Most typically, the symptoms involved debilitating damage to their nervous system. While researchers at Kumamoto University were able to identify heavy metal poisoning, it took some time before they could point to methyl mercury with confidence. (Minamata disease symptoms were first observed in humans in 1953; in 1959, studies definitively concluded that methyl mercury was the source).
Uncertainty ruled the early response. Hospitals quarantined sick patients, concerned that their ailment was contagious. “Whenever a new patient was identified,” Akio Mishima reported in Bitter Sea, “white-coated public health inspectors hurried to his or her house to disinfect every nook and cranny.” And still the fishing community ate the fish from the bay. Kibyo—strange illness—the locals said, when another neighbour showed symptoms. In historical circles, we resist talking about passive victims, but the hapless not-knowingness of the early stages of the Minamata outbreak can be framed in a manner that would impress Alfred Hitchcock.
Fear: the delay in discovering acute mercury poisoning was the source of Kibyo provoked fear around not knowing the source of the ailment. Subsequent victims also expressed fears about dying. Another form of fear manifests itself in the cultural response to victimhood. As science pointed toward the bay and the fish therein as the source of Minamata disease, divisions within the community arose between the afflicted and the fishermen who depended upon the bay for their livelihood. Patients’ families seeking compensation suffered discrimination from their neighbours. This ostracism also stimulated new forms of fear.