ENVIRONMENT
Use our resources to better understand the debate surrounding the Pebble Mine.
Teachers, scroll down for a quick list of key resources in our Teachers Toolkit.

Photo courtesy Thomas Quinn, University of Washington, and the Environmental Protection Agency
Discussion Ideas
- Watch our media spotlight video on the Pebble Mine controversy. Work through the short series of questions in the “Questions” tab.
- What are the benefits of a gold mine in Bristol Bay?
- A gold mine would provide hundreds of jobs, improving the economy of the region.
- How large would Pebble Mine be?
- Pebble Mine would be an open pit about two miles long and 1,700 feet deep.
- A leak or spill from Pebble Mine would endanger the local sockeye salmon population. What is another danger of such a spill?
- A spill could contaminate freshwater resources.
- What are the benefits of a gold mine in Bristol Bay?
- According to the Nat Geo News article, what was the EPA’s reasoning behind halting development of the Pebble Mine project? Was this an economic or environmental decision?
- Both. “Extensive scientific study has given us ample reason to believe that the Pebble Mine would likely have significant and irreversible negative impacts on the Bristol Bay watershed and its abundant salmon fisheries,” says EPA Administrator Gina McCarthy.
- Economic and Environmental: On the EPA’s website, a pie chart dramatically shows how Bristol Bay is home to half of the world’s sockeye salmon population. Commercial fishing is the biggest industry in Bristol Bay. The salmon population (including king, red, chum, silver, and pink varieties, as well as sockeye) also provides a strong sport fishing and tourist economy. Critics worry a mine would threaten this lucrative industry.
- Economic and Environmental. “Pure water is more precious than gold,” says one Bristol Bay resident in our video. Protecting the watershed is a safety issue, as well as an economic one–critics worry pollution linked to the mine may limit access to water used for drinking, hygiene, and industry. This would put an economic strain on local, state, and federal government agencies.
- Both. “Extensive scientific study has given us ample reason to believe that the Pebble Mine would likely have significant and irreversible negative impacts on the Bristol Bay watershed and its abundant salmon fisheries,” says EPA Administrator Gina McCarthy.
- Our video (as well as a terrific National Geographic magazine article) outlines the controversy surrounding the Pebble Mine. Does the EPA’s decision end that controversy? The magazine article asked about “Alaska’s Choice: Salmon or Gold.” Have the salmon won?
- The salmon have “won” temporarily. According to the Nat Geo News article, the decision “kicks off a review process” for all mining activities in Bristol Bay.
TEACHERS TOOLKIT
Nat Geo: EPA Puts Pebble Mine on Hold
Nat Geo: Pebble Mine