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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 2017, approximately 640,903 tons of ore were mined, with 673,152 tons of ore processed through the mill facility. Approximately 19,122 tons of concentrate were shipped to an off-site refinery producing approximately 117,285 ounces of gold. At the end of 2017, Coeur Alaska employed 379 people.

Permits, Authorizations, and Approvals

Alaska Department of Natural Resources
Alaska Department of Environmental Conservation (DEC)
Alaska Department of Fish and Game (ADFG)
U.S. Department of Agriculture, Forest Service
U.S. Army Corps of Engineers (USACOE)

2011 APDES Permit Public Notice Archive

Annual Meetings and Annual Reports

2018 Annual Agency Meeting

June 20, 2018 10:00AM-3:30PM
DEC Juneau Offices (410 Willoughby Ave) 2nd Floor Main Conference Room
Teleconference number: 1-800-791-2345
Login code: 75434#
Meeting Agenda PDF

2017 Annual Reports
Kensington Gold Mine 2017 Annual Report PDF
Attachment 1: Kensington Marine Mammal Report - 2017 Transportation Action Strategy, May 2017, Coeur Alaska, Juneau, AK
Attachment 2: 2017 Terrestrial Wildlife Monitoring Report of the Slate Lakes Basin, January 2018, Juneau AK
Attachment 3: Mountain Goat Population Monitoring near the Kensington Mine, Alaska - February 2016, ADFG
Attachment 4: 2017 Revegetation Test Plot Monitoring Data

Mountain goat population monitoring and movement patterns near the Kensington Mine, Alaska - March 2018, ADFG PDF
Waste Management Permit No. 2013DB0002 2017 Annual Report 4Q 2017 Report PDF

APDES 2017 Reporting

Volume 1: Aquatic Studies at Kensington Gold Mine, 2017, ADFG Technical Report No. 18-02 PDF
Volume 2: Water Quality 2017 PDF

Archive of prior Annual Meetings and Reports

For More Information Contact:

State of Alaska Large Mine Permitting Team

Kyle Moselle
Associate Director
Alaska Department of Natural Resources
Office of Project Management and Permitting
Phone: (907) 465-6849
Fax: (907) 465-3886

Mail to:
PO Box 111030
Juneau, AK 99811

Visit at:
400 Willoughby Ave., 4th Floor
Juneau, AK 99801