Greens Creek Mine

Project Description

The Greens Creek Mine is an underground cut-and-fill and long hole stoping operation using grinding and flotation processes to recover zinc and lead, and gravity processes to recover silver and gold. 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 Greens Creek Mine facilities include the Greens Creek underground mine, surface mill, dry stack tailings facility, tailings storage facility, water treatment system, wastewater treatment plant, administrative and camp facilities, ferry dock and ship-loading facility. Power is supplied by hydroelectric infrastructure and diesel generators. The mine started production in 1989, and today operates 24-hours a day, 365 days a year. In 2015, Greens Creek Mine produced approximately 8,452,153 ounces of silver, 60,566 ounces of gold, 61,934 tons of zinc, and 21,617 tons of lead. As of 2015, Hecla Greens Creek Mining Company employs approximately 415 people.

Financial Assurance

Reclamation/Closure Bond & Audits MOU (USFS, ADNR, ADEC) (PDF) (06/30/2014)

Reclamation/Closure Bond & Audits MOU Modification No. 1 (USFS, ADNR, ADEC) (PDF) (01/29/2015)

Permits, Approvals, 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 (March 2009)

Support Documents
HGCMC General Plan of Operations 2014 - Appendices 1, 3, 7, 11 & 14
Greens Creek Mining Company General Plan of Operations 2004 (PDF)
Final Environmental Impact Statement
Inspection Reports


Archive of Inspections

Annual Meetings and Annual Reports
Annual Meeting

2016 Annual Agency Meeting
July 15, 2016 8:30AM-3:30PM
DEC Juneau Offices (410 Willoughby Ave) 2nd Floor Main Conference Room
Meeting Agenda (PDF)

Annual Reports