Hecla Mining Co HL

Alternate Symbol(s): HL.PR.B

Metals & Mining Silver

Hecla Mining Company discovers, acquires and develops mines and other mineral interests and produces and market concentrates containing silver, gold and other metals, carbon material containing silver and gold, and unrefined dore containing silver and gold. Its segments include Greens Creek, Lucky Friday, Keno Hill, Casa Berardi and Nevada Operations. The Company produces zinc, silver and precious metals flotation concentrates at Greens Creek and silver and zinc flotation concentrates at Lucky Friday. At Greens Creek, it also produces gravity concentrate containing payable silver, gold and lead. It also produces unrefined gold and silver bullion bars (dore) and loaded carbon and precipitates at Casa Berardi, which are shipped to refiners before sale of the metals to precious metal traders. Keno Hill is located in the Keno Hill Silver District in Canada's Yukon Territory. Nevada Operations consists of four land packages in northern Nevada totaling approximately 110 square miles.

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Hecla Mining Co

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Post by HuskySWon Jul 10, 2024 1:44pm

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Post# 36126697

2023 annual phys geotechnical inspection of earth structs

Thought this might be of interest. :) Site visit has a nice GPS walkabout (that would have been fun ;)) In light of what is hapening over at VG Dublin Gulch this is a review of HL Keno Hill operations and review of the mines by:

Tetra Tech Canada Inc.
61 Wasson Place
Whitehorse, YT Y1A 0H7 CANADA
Tel 867.668.3068 Fax 867.668.4349

PRESENTED TO

Alexco Keno Hill Mining Corporation, dba Hecla Yukon
2023 Annual Geotechnical Inspection
Mining Related Earth Structures
NOVEMBER 16, 2023
ISSUED FOR USE

1.1 Background
Tetra Tech Canada Inc. (Tetra Tech), NELPCo’s exclusive engineering service provider, was retained by Alexco
Keno Hill Mining Corporation (AKHM), doing business as Hecla Yukon, to complete the 2023 annual physical
geotechnical inspection of earth structures associated with the development of the Bellekeno, Flame and Moth, and
Bermingham Mines, located near Keno City, Yukon

"1.2 Scope of Work
Tetra Tech’s scope of services for this work included:
Complete a visual inspection of the following structures, identified by AKHM:
− Bellekeno Potentially Acid Generating (PAG) waste storage facility;
− Bellekeno Road waste rock pile;
− Bellekeno 625 water treatment ponds and discharge line;
− Lightning Creek bridge abutments;
− Mill water storage ponds;
− Dry stacked tailings facility (DSTF);
− Flame and Moth PAG waste storage facility;
− Bermingham Non-Acid and/or Metal Leaching (NAML) waste dump;
− Bermingham sludge containment facility;
− Bermingham storage pond; and
− Bermingham PAG waste storage facility.
Collect readings of active instrumentation installed within and around the DSTF footprint."

2.0
The 2023 annual inspection was completed between July 20 and July 22, 2023. Tetra Tech’s representatives
included Mr. Richard Trimble, P.Eng., and Mr. Ian MacIntyre, P.Eng., who were accompanied by several AKHM
and ERDC representatives including Baoyao Tang (Chief Mine Engineer), Moctar Diallo (Senior Geotechnical
Engineer), and Cameron Robertson (Project Engineer).

Includes interesting photo's of various HKH mines and facilities. Uploaded 04/24...

https://emr-ftp.gov.yk.ca/emrweb/COMM/major-mines/keno-hill/2023%20annual%20physical%20inspection%20report.pdf

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