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Kensington Gold Mine

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 2016, approximately 626,797 tons of ore were mined, with 626,419 tons of ore processed through the mill facility. Approximately 20,475 tons of concentrate were shipped to an off-site refinery producing approximately 127,118 ounces of gold. At the end of 2016, Coeur Alaska employed 331 people. Currently, they employ 343 people and are ramping up to 356 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)

Alaska Department of Environmental Conservation (DEC)
DEC Waste Management Permit 2013DB0002 (PDF)
APDES Permit No. AK0050571 (2017) (PDF)
APDES Permit No. AK0050571 Fact Sheet (2017) (PDF)
APDES Permit No. AK0050571 Response to Comments (2017) (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 (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

Final Plan of Operations -- May 2005 (PDF)
1 - Existing Disturbance (PDF)
2 - Proposed Facilities (PDF)
3 - Disturbance Boundaries (PDF)
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

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

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

Five-Year Environmental Audit
Environmental Compliance and Management Systems Audit

Annual Meetings and Annual Reports

2017 Annual Agency Meeting

June 27, 2017 10:00AM-3:00PM
DEC Juneau Offices (410 Willoughby Ave) 2nd Floor Main Conference Room
Teleconference number: 1-800-791-2345
Login code: 75434#

Annual Reports
APDES 2016 Reporting

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