Ontario Minamata disease


Ontario Minamata disease is a neurological syndrome caused by severe mercury poisoning. It occurred in the Canadian province of Ontario, in 1970, and severely affected two First Nation communities in Northwestern Ontario following consumption of local fish contaminated with mercury, and one First Nation in Southern Ontario due to illegal disposal of industrial chemical waste. The disease was named after the infamous case of severe mercury poisoning in the fishing community of Minamata, Japan, which became known as Minamata disease because it devastated only the residents of the community.

Grassy Narrows and Whitedog First Nations

In 1962, Dryden Chemical Company began operating a chloralkali process plant in Dryden, Ontario using mercury cells. It produced sodium hydroxide and chlorine that were used in large amounts for bleaching paper during production by the nearby Dryden Pulp and Paper Company. Both companies were subsidiaries of the British multinational, Reed International.
Dryden Chemical Company discharged their effluent directly into the Wabigoon-English River system. In 1970, extensive mercury contamination was discovered in this river system, leading to closure of the commercial fishery and some tourism related businesses. On March 26, 1970, the Ontario provincial government ordered Dryden Chemical Company to cease dumping mercury into the river system, although the order did not place any restrictions on airborne emissions of mercury by the company. It was estimated that over 9,000 kg of mercury had been dumped by the company into the Wabigoon-English river system between 1962 and 1970. The airborne emissions of mercury continued unabated until the company stopped using mercury cells in its chloralkali process in October 1975; the company closed down in 1976.

Sarnia First Nation

The Aamjiwnaang First Nation is located on the St. Clair River, affectionately called by the local population as "Chemical Valley." This First Nation is plagued by numerous chemical affective disorders, including mercury poisoning. Elders in the community recall collecting mercury from the local toxic waste dump by pouring water, then selling the collected mercury on the black market.

Health effects

Grassy Narrows and Whitedog First Nations

In the late 1960s, people in the Grassy Narrows and Whitedog First Nations populations started to suffer symptoms of mercury poisoning. Several Japanese doctors who had been involved in studying Minamata disease in Japan travelled to Canada to investigate the mercury poisoning in these people. Blood mercury levels were above 100 ppb in a significant number of individuals and above 200 ppb in several others. Symptoms included sensory disturbances, such as narrowing of the visual field, and impaired hearing, abnormal eye movements, tremor, ataxia, and dysarthria.
Health effects continued to be felt, even in young people, in the 21st century. Dumping of drums of mercury which continue to leak is suspected.

Lawsuits and settlements

Grassy Narrows and Whitedog First Nations

The Asabiinyashkosiwagong Nitam-Anishinaabeg or the "Grassy Narrows First Nation" and their downstream neighbours, the Wabaseemoong Independent Nations sought compensation for loss of jobs and way of life. On March 26, 1982, Canada contributed $2.2 million to Wabaseemoong for economic development, social and educational programs. Wabaseemoong also signed a settlement with Ontario in January 1983. On July 27, 1984, Canada contributed $4.4 million to Grassy Narrows for economic development and social service development/planning.
In 1985, a Memorandum of Agreement was signed committing government and two companies to a one-time compensation payment. In 1986, the Government of Canada's Grassy Narrows and Islington Indian Bands Mercury Pollution Claims Settlement Act and the Government of Ontario's English and Wabigoon River Systems Mercury Contamination Settlement Agreement Act, facilitated the creation of the Mercury Disability Fund and the Mercury Disability Board, based in Kenora, Ontario. The federal and provincial governments, as well as the two companies involved, paid a total of $16.67 million for the MOA compensation. Canada's contribution was $2.75 million. Part of the First Nations' MOA settlement was placed in a trust fund. The Board administers the trust as well as a benefits mechanism.
Nevertheless, the community members have seen little of this money, due to conditions on its use and bureaucratic requirements by band councils. Similarly to other First Nations communities, the federal government's Indian Act governance system has made it difficult for band councils and chiefs to negotiate for their people.
Chief Sakatcheway was the first leader of community when the treaty was signed and mainly wanted education for the community.