Kensington Gold Mine

Project Description

The Kensington Gold Mine is an underground long hole stoping and drift-and-fill operation using flotation processes to recover gold. The mine is located in southeast Alaska, in the Tongass National Forest between Berners Bay and Lynn Canal, approximately 45 air miles north of Juneau and 35 air miles south of Haines. It is situated on private and U.S. Forest Service lands within the City and Borough of Juneau and access to the mine is by air or sea. The project is operated by Coeur Alaska, Inc. (Coeur), a wholly owned subsidiary of Coeur d'Alene Mines Corporation. The major Kensington Mine facilities include the Kensington underground mine, underground paste backfill plant, surface mill, tailings treatment facility, administrative and camp facilities, generator facilities, water treatment facilities, and marine dock facility. Power is supplied by on-site diesel generators. The mine was originally permitted in 2005, and operates 24-hours a day, 365 days a year. In 2014, approximately 642,249 tons of ore was mined, with 635,961 tons of ore processed through the mill facility. Approximately 18,378 tons of concentrate was shipped to an off-site refinery producing approximately 120,469 ounces of gold. As of 2014, Coeur employs approximately 318 people.

Financial Assurance
Permits, Authorizations, and Approvals

Alaska Department of Natural Resources
Kensington Gold Mine Reclamation Plan Approval J20133158 (PDF)
Certificate to Operate a Dam (FY2015-13-AK00308) (PDF)

U.S. Department of Agriculture, Forest Service
2016 Surface Exploration Decision Memo (PDF)
2014 Kensington Fuel Depot Decision Notice and Finding of No Significant Impact (PDF)
Approval letter of the April 2013 Kensington Reclamation Plan Update
and reclamation cost estimate

Support Document:

2013 Reclamation and Closure Plan Update for the Kensington Gold Project,
Borough of Juneau, Alaska (April 2013)


Response to Comments on State of Alaska Authorizations 2005 (PDF)

Alaska Department of Natural Resources (DNR)

Alaska Department of Environmental Conservation (DEC)

Alaska Department of Fish and Game (ADFG)

U.S. Army Corps of Engineers (USACOE)

U.S. Environmental Protection Agency (EPA)

2011 APDES Permit Public Notice Archive

Support Documents
2004 Final Supplemental Environmental Impact Statement (Dec 2004)

1997 Final Supplemental Environmental Impact Statement (Aug 1997)

1992 Final Supplemental Environmental Impact Statement (Jan 1992)

Inspection Reports

Archive of prior Inspection Reports

Annual Meetings and Annual Reports
2015 Annual Agency Meeting

July 7, 2015 10:00AM - 3:00 PM

DEC Juneau Offices (410 Willoughby Ave) 2nd Floor Main Conference Room

2014 Annual Reports 

NPDES and APDES 2014 Reporting

Volume 1: Aquatic Studies at Kensington Mine, 2014 (PDF)

Volume 2: Water Quality 2014 (PDF)

Archive of prior Annual Meetings and Reports

For More Information Contact

State of Alaska Large Mine Permitting Team
Kyle Moselle
Large Mine Coordinator
Alaska Department of Natural Resources
Office of Project Management and Permitting
400 Willoughby Avenue, Suite 400
Juneau, AK 99801
Phone:(907) 465-6849
Fax: (907) 465-3886

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