Pebble Project

History and Location

The Pebble Project is located approximately 200 miles southwest of Anchorage in the Bristol Bay region. The deposit lies entirely within the Lake and Peninsula Borough, approximately 23,782 square miles of land which is home to some 1,500 people in 18 communities.

Southwest Alaska - Regional Map
Click to Enlarge

The area around Pebble was secured by the State of Alaska during the Cook Inlet Land Exchange of 1974 - a three-way land swap involving the federal government, the State and the Cook Inlet Region Inc. (CIRI), an Alaska Native regional corporation. The State of Alaska secured land including what is now Pebble, explicitly for its mineral potential.

Surrounding terrain is characterized by tundra, gently rolling hills and the absence of permafrost. At just 1,000-feet above sea-level and 65 miles from tidewater on Cook Inlet by air, the project setting presents few obstacles to successful mine and infrastructure development.

Alaska is known around the world for its rigorous environmental standards, as well as its healthy fish and wildlife populations. The state currently has five hard rock mines with exemplary performance records and five major development projects, including Pebble.

While enforcing high standards, regulatory oversight in Alaska is also intrinsically stable and predictable. Alaskans strongly support responsible resource development, and have clearly indicated their support for the state's permitting system as the appropriate venue for evaluating projects like Pebble.

Northern Dynasty is confident that Pebble can be developed in an environmentally sound and socially responsible manner, consistent with Alaska and US standards.



  • 404 Wetlands Permit application receipted and Pebble EIS triggered


  • Pebble enters federal permitting process
  • Pebble Partnership announces Pebble Project Advisory Committee
  • Pebble Partnership reaches settlement with US Environmental Protection Agency (EPA), and proceeds towards normal course permitting


  • Successful advancement of multi-prong strategy to address EPA's pre-emptive 404(c) veto of the Pebble Project; Cohen Report released


  • The Pebble Partnership takes steps to address US EPA initiation of a pre-emptive regulatory action with potential to restrict future development of Pebble
  • Updated resource estimate based on drilling through 2013 shows increase in measured and indicated resources for the project



  • The Pebble Partnership releases its Environmental Baseline Document containing 27,000 pages of scientific data and analyses
  • Pebble Project reaches one millionth foot of drilling, exemplifying the scope and scale of the comprehensive technical and scientific work programs


  • Northern Dynasty publishes positive Preliminary Assessment Technical Report indicating Pebble has the potential to become one of the most important metal producers of the 21st century
  • Estimated mineral resource up by over 1000% since 2001


  • The Pebble Fund is established as a five-year, $5 million commitment to support community-led initiatives that enhance the health of Bristol Bay fisheries and contribute to a sustainable economic future in southwest Alaska
  • Updated resource estimate confirms Pebble as one of the world's most important copper-gold-molybdenum deposits


  • Northern Dynasty and Anglo American enter into a 50:50 partnership to develop a modern, long-life mine at Pebble
  • Anglo commits to $1.5 billion all or nothing to earn its 50% share in Pebble Partnership


  • Drilling at Pebble East continues to expand high-grade porphyry discovery
  • Estimated mineral resource up by 600% since 2001


  • Northern Dynasty acquires 100% of the Pebble deposit
  • Northern Dynasty discovers Pebble East, a significantly higher-grade zone of mineralization

2001 - 2004

  • Northern Dynasty expands the known mineral resource at Pebble from 1 billion to more than 4 billion tonnes – a 400% increase; initiates planning for a large-scale, open pit mine and comprehensive engineering, environmental and socio-economic studies


  • Northern Dynasty secures agreements to purchase Pebble property

1988 - 1997

  • Cominco (now Teck) explores the property
  • Cominco discovers several zones of mineralization on the Pebble property and in 1989 discovers the Pebble deposit; drilling and initial engineering and environmental studies completed over next over several years

(1) The IHS Global report is based on a conceptual mine plan using an iteration of the engineering work undertaken by the Pebble Partnership in 2013 and is the only economic impact study available at this time. The IHS report is intended to provide information about general economic effects/contribution of a development at Pebble to Alaska and the United States. The report should not be used to evaluate the Pebble Project’s impact on Northern Dynasty.

Subscribe to our Email List