The Tailing Treatment Facility and Upper Slate Lake at the Kensington Mine on Monday, Oct. 14, 2019. Coeur Alaska wants to expand the life of the mine which will require expanding this lake which holds processed material from the mine. The lake has its own water treatment plant which continually processes wastewater. The company says it follows the strictest environmental precautions. (Peter Segall / Juneau Empire)

The Tailing Treatment Facility and Upper Slate Lake at the Kensington Mine on Monday, Oct. 14, 2019. Coeur Alaska wants to expand the life of the mine which will require expanding this lake which holds processed material from the mine. The lake has its own water treatment plant which continually processes wastewater. The company says it follows the strictest environmental precautions. (Peter Segall / Juneau Empire)

Comment period opens for proposed mine operations extension

Expanding the life of the mine means expanding facilities

The Tongass National Forest is seeking the public’s input on a proposed expansion of operations at the Kensington Gold Mine located north of Juneau, the U.S. Forest Service announced Friday.

The Kensington Gold Mine, operated by Coeur Alaska Inc., is an underground gold mine on a mix of patented land and the Tongass National Forest, the Forest Service said in a news release. It has been in production since late June 2010. Kensington provides approximately 387 jobs in Juneau and Southeast Alaska, the release said.

Coeur Alaska Inc. is requesting an operations plan amendment for additional tailings, waste rock disposal and related infrastructure at the mine, the U.S. Forest Service said in a news release. A 45-day public comment period on the supplemental environmental impact statement, which considers the proposed changes to the Plan of Operations, begins on Oct. 30 and will remain open until Dec. 14.

[Digging into Kensington Gold Mine]

The proposed additions would extend the life of the mine. The current predicted life of the Kensington mine currently ends in 2023, according to the Forest Service. Activities under the proposed Plan of Operations Amendment will add 10 years to the expected mine life to 2033.

“The Forest Service recognizes the importance of mineral resources and encourages safe, responsible mineral exploration and development as part of our multiple-use mandate,” said Brad Orr, Juneau District Ranger, in the release. “We are working with Coeur Alaska to analyze potential impacts of their proposed extension of operations for the mine, and public input is an important part of the analysis.”

Workers inside the Kensington Gold Mine on Monday, Oct. 14, 2019. Kensington began its operations in 2010 after a prolonged legal battle over the Tailing Treatment Facility which environmentalists say is a threat to fish habitats. (Peter Segall / Juneau Empire)

Workers inside the Kensington Gold Mine on Monday, Oct. 14, 2019. Kensington began its operations in 2010 after a prolonged legal battle over the Tailing Treatment Facility which environmentalists say is a threat to fish habitats. (Peter Segall / Juneau Empire)

Forest Service experts will work toward minimizing the impacts of mining activities on other forest resources by working closely with the state and other federal agencies with regulatory authority to ensure that measures are in place to protect water quality and nearby aquatic habitats, according to the Forest Service.

Earlier this month the Forest Service began a public comment period on a proposed expansion of the Hecla Greens Creek Mine on Admiralty Island, which is looking to expand its tailings and waste rock facilities as well.

[Coeur Alaska to expand Kensington operations]

According to the release, public comments submitted during this period will be considered and responded to in the Final Environmental Impact Statement and used to help finalize the Draft Decision. Project information, meeting announcements, legal notices, and documents are posted on the project web page at: https://www.fs.usda.gov/project/?project=55533.

Virtual public meetings will be scheduled in Juneau and Haines, the Forest Service said, but did not give dates.

Comments can be submitted several ways:

• Electronically at: https://www.fs.usda.gov/project/?project=55533

• Email to sm.fs.kensington@usda.gov

• Fax to 907-586-8808.

• Mail to 8510 Mendenhall Loop Rd, Juneau AK 99801; attention Kensington Mine Plan Amendment

More in News

The Seward-based band Blackwater Railroad Company plays onstage ahead of their New Year’s concert in Juneau at Crystal Saloon. (photo courtesy Blackwater Railroad Company)
Transience and adventure: Alaska band returns to Juneau for New Year’s concerts

The Blackwater Railroad Company talks about their ‘Alaska Music’ ahead of their shows.

A page of the Juneau Empire from a Nov. 29, 1915 edition. (Mari Kanagy / Juneau Empire)
Empire Archives: Juneau’s history for Dec. 27 & 28

1915 Juneau reporters reflect on holiday celebrations and look forward to the New Year.

A residence stands on Tuesday, Dec. 23 after a fatal house fire burned on Saturday, Dec. 20. (Mari Kanagy / Juneau Empire)
2 house fires burn in 3 days at Switzer Village

Causes of the fires are still under investigation.

A house on Telephone Hill stands on Dec. 22, 2025. (Mari Kanagy / Juneau Empire)
Court sets eviction date for Telephone Hill residents as demolition plans move forward

A lawsuit against the city seeks to reverse evictions and halt demolition is still pending.

A Douglas street is blanketed in snow on Dec. 6, 2025. (Mari Kanagy / Juneau Empire)
Precipitation is forecast later this week. Will it be rain or snow?

Two storm systems are expected to move through Juneau toward the end of the week.

Juneauites warm their hands and toast marshmallows around the fire at the “Light the Night" event on winter solstice, on Dec. 21, 2025. (Mari Kanagy / Juneau Empire)
A mile of lights marked Juneau’s darkest day

Two ski teams hosted a luminous winter solstice celebration at Mendenhall Loop.

A Capital City Fire/Rescue truck drives in the Mendenhall Valley in 2023. (Clarise Larson / Juneau Empire file photo)
Juneau man found dead following residential fire

The cause of the fire is still under investigation.

CBJ sign reads “Woodstove burn ban in effect.” (City and Borough of Juneau photo)
Update: CBJ cancels air quality emergency in Mendenhall Valley Sunday morning

The poor air quality was caused by an air inversion, trapping pollutants at lower elevations.

A dusting of snow covers the Ptarmigan chairlift at Eaglecrest Ski Area in December 2024. (Eaglecrest Ski Area photo)
Update: Waterline break forces closure at Eaglecrest Friday, Saturday

The break is the latest hurdle in a challenging opening for Juneau’s city-run ski area this season.

Most Read