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COVID Update: More details

Greens Creek Mine

Project Description

The Greens Creek Mine is an underground cut-and-fill and long-hole stopping operation using flotation and gravity processes to recover silver, gold, lead, and zinc.

The mine is located in southeast Alaska, in the Tongass National Forest near Hawk Inlet on Admiralty Island National Monument, approximately 18 miles southwest of Juneau, on U.S. Forest Service and private patented land within the City and Borough of Juneau. Access to the mine is by sea and a 13-mile access road.

The project is operated by Hecla Greens Creek Mining Company (HGCMC). The major mine facilities include the underground mine, surface mill, dry stack tailings storage facility, wastewater treatment plant, administrative and camp facilities, ferry dock, and ship-loading facility. Power is supplied by connection to the local hydroelectric-powered utility with diesel generators as a backup.

The mine started production in 1989 and today operates 24-hours a day, 365 days a year. In 2020, HGCMC produced approximately 10.5 million ounces of silver, 48,491 ounces of gold, 56,813 tons of zinc, and 21,400 tons of lead. As of 2021, HGCMC employed approximately 440 people.

Permits, Authorizations, and Approvals

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

Five-year Environmental Audits

Greens Creek Mine 5-Year Environmental Audit (January 2019)

Annual Meetings & Annual Reports

2020 Annual Meeting

Considering the logistical difficulties and health-related risks of holding an in-person meeting in this time of pandemic response, the Alaska Department of Environmental Conservation, Wastewater Discharge Authorizations Program (WDAP) has waived Permit Part The annual meeting for calendar year 2020 is cancelled. All other permit conditions remain in effect.

2020 Annual Reports

2020 HGCMC H1 Biannual Report 2020 HGCMC H2 Biannual Report 2020 HGCMC BMP Plan Annual Report 2020 HGCMC Hawk Inlet Monitoring Report 2020 HGCMC Storm Water Annual Report 2020 Aquatic Biomonitoring Greens Creek Mine
2020 HGCMC Hawk Inlet Monitoring Report Appendix B

Archive of prior Annual Meetings and Reports

For More Information Contact

State of Alaska Large Mine Permitting Team
Cathe Heroy
Large Mine Coordinator
Alaska Department of Natural Resources
Office of Project Management and Permitting
Phone: (907) 269-0880
Fax: (907) 269-5673

Mail to:
550 W. 7th Ave. Suite 1430
Anchorage, AK 99501

Visit at:
550 W. 7th Ave. Suite 1430
Anchorage, AK 99501

Matthew Reece
USDA Forest Service
8510 Mendenhall Loop Road
Juneau, Alaska 99801
Telephone: (907) 586-8800
Fax Number: (907) 586-8808