Causes
Effects on ecosystems and food chains
Responsibility and Perspectives
Historical Context
Community Impact
1000

What is the primary cause of the mercury contamination in Grassy Narrows?

The Dryden pulp and paper mill dumped mercury into the English-Wabigoon River system.

1000

Which staple food for the Grassy Narrows community has been heavily impacted by mercury contamination?

Fish.

1000

Which company was responsible for the initial mercury dumping?

Dryden Fibre Canada (formerly Dryden pulp and paper mill).

1000

In what province is Grassy Narrows located?

Ontario.

1000

What percentage of the Grassy Narrows population is affected by mercury poisoning?

Nearly 90%.

2000

In which decades did the mercury dumping take place?

The 1960s and 70s.

2000

Name two health issues caused by mercury poisoning in Grassy Narrows.

Tremors and memory loss.

2000

From whom has the Grassy Narrows First Nation been advocating for justice?

The federal and Ontario governments.

2000

What river system was contaminated by mercury?

The English-Wabigoon River system.

2000

Besides health issues, what other aspect of life in Grassy Narrows is affected by mercury contamination?

The ecosystem.

3000

Approximately how much mercury was dumped into the river system?

About 9,000 kilograms or 9 tons

3000

What process causes mercury to become more concentrated as it moves up the food chain?

Biomagnification.

3000

What have governmental and corporate entities been criticized for regarding the crisis in Grassy Narrows?

For insufficient action to address the contamination.

3000

What was the original name of the company responsible for the mercury dumping?

Dryden pulp and paper mill.

3000

What ongoing struggle does the Grassy Narrows community face?

The fight for clean water and health equity.

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