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The Aurora mining district, located in Mineral County, Nevada, is an open pit gold and silver mine. It includes an existing 600-ton-per-day mill. As of December 2025, the overall Nevada Operations, including Aurora, were on care and maintenance.

An existing 600-ton-per-day mill is on site.

Hecla Mining has received federal approval for the Polaris Exploration Project at the Aurora mining district, with exploration activities scheduled to commence in 2026. The U.S. Forest Service issued a Finding of No Significant Impact and Decision Notice for the project on 20 November 2025. The exploration program will test multiple high-grade epithermal vein systems. The Polaris Exploration Project is described as a 10-year mineral exploration plan, including the construction of up to 25 miles of new or reconstructed roads and up to 250 drill pads.

444 employees (2025)

Production overview - 2025: silver 5.3 Moz; 2024: silver 4.89 Moz, lead 31300 t, zinc 13500 t.

Surface facility with a 1,000 tons of ore per day mill, conventional lead/zinc flotation flowsheet, crushing, grinding, flotation, concentrate dewatering, tailings dewatering/disposal. Concentrates shipped by truck to Teck Cominco Metals Ltd. smelter in Trail, BC, Canada.

Underhand Closed Bench (UCB) mining method, overhand and underhand cut-and-fill techniques with ramp access, Silver Shaft (6,205 feet deep), #4 Shaft (9,600 feet below surface)

New surface cooling project (expected completion mid-2026), $73 million capital investment planned for underground development, new tailings facility, and surface cooling project, new chiller system installed underground (2024), exploration drilling planned for 2024 to the east of the 30 Vein

As of 2024, approximately 512 people were employed at the mine. In 2022, the mine had 494 employees. As of December 31, 2021, the company employed 464 people at the Greens Creek mine.

Production overview - 2025: silver 8.7 Moz, gold 59349 oz, lead 18.2 kt, zinc 51.3 kt; 2024: silver 8.5 Moz, gold 55275 oz.

The mine uses flotation and gravity processes to recover the metals. It has an ore concentrating mill on site. The mill produces approximately 2,300 tons of ore per day.

The primary mining methods are cut and fill and longhole stoping. The mine uses tele-operated autonomous equipment from the surface.

In November 2024, the U.S. Forest Service announced a final decision to extend production at the mine for 12 to 18 years, past 2031 until at least 2043. This involves expanding the tailings and waste rock storage facility. In January 2026, the Federal Permitting Improvement Steering Council announced that the Greens Creek Surface Exploration Project had completed its federal permitting process. This five-year plan of operations, approved by the U.S. Forest Service, is for surface exploration for silver, gold, lead, and zinc, with the expectation of increasing the project's reserve base and extending the mine life.

400-600 (estimated during production)

First concentrate was produced in June 2024. 2024 production guidance is between 100,000 and 140,000 tonnes of zinc in concentrate. 2025 production was 203,168 tonnes of zinc. The 2026 production guidance for zinc is 240,000 to 290,000 tonnes.

Production overview - 2025: zinc 203168 t.

A new 800,000-tonne-per-annum concentrator was completed in May 2024. The plant uses dense media separation, milling, and flotation. A debottlenecking program increased the concentrator throughput capacity by 20% to 960,000 tonnes of ore per annum.

The mine is accessed via the existing decline and Shaft 5 (P5) is the main production shaft with a maximum hoisting capacity of 1.8 Mtpa. Mining is performed using mechanized methods.

over 650 people (as of Dec 2014), over 85% from local communities (as of May 2025) SAS

The processing strategy involves a phased construction of concentrator modules. The Phase 1 concentrator construction was completed in the third quarter of 2024. The Phase 2 expansion includes adding a 3.3 Mtpa concentrator module. The Phase 3 design is based on adding two more 3.3 Mtpa modules.

Phase 1 involves a 770,000 tonnes per annum (tpa) concentrator. Phase 2 is an expansion targeted for completion in the fourth quarter of 2027, which will increase total processing capacity to 4.1 million tonnes per annum (Mtpa). A $700 million senior project finance facility for the Phase 2 expansion has been signed. A Phase 3 expansion is outlined in a Preliminary Economic Assessment (PEA), which considers scaling up processing capacity to 10.7 Mtpa.

approximately 6,000

The Kamoa-Kakula Copper Complex is a joint venture between Ivanhoe Mines (39.6%), Zijin Mining Group (39.6%), Crystal River Global Limited (0.8%), and the Government of the Democratic Republic of Congo (20%). Commercial production began on July 1, 2021. An updated independent technical report with an effective date of December 31, 2025, was released on March 31, 2026. This report outlines a Mineral Reserve of 466 million tonnes of ore at a grade of 2.82% copper, containing 13.1 million tonnes of copper. The updated Indicated Mineral Resource is estimated at 1.27 billion tonnes at a grade of 2.65% copper. Following operational challenges in 2025, including seismic events and flooding, the mine plan for 2026 and 2027 has been refocused on underground development, rehabilitation, and establishing long-term infrastructure. As a result, the production guidance for 2026 has been revised to between 290,000 and 330,000 tonnes of copper anodes, and for 2027 is between 380,000 and 420,000 tonnes of copper anodes. The operation is targeting an annualised production rate of over 500,000 tonnes of copper from 2028 onwards.

Production overview - 2025: copper 388838 t; 2023: copper 393551 t.

The complex uses flotation to produce copper concentrate from its Phase 1, 2, and 3 concentrators. A new on-site, 500,000-tonne-per-annum direct-to-blister copper smelter, the largest in Africa, commenced heat-up on November 21, 2025, and produced its first copper anodes on December 29, 2025. The smelter is ramping up ahead of schedule and is expected to process the majority of the concentrate produced, significantly reducing logistics costs and providing sulphuric acid as a by-product. The complex is powered by clean, renewable hydro-generated electricity, and the first 60 MW of on-site solar power is expected to be commissioned in the second quarter of 2026.

The Phase 3 concentrator began commercial production in the third quarter of 2024. A 2023 Pre-Feasibility Study evaluates a staged increase in production capacity up to a total of 19.2 million tonnes per annum by 2030. A Preliminary Economic Assessment projects a mine life extension to 42 years, which includes the addition of four new underground mines (Kamoa 3, 4, 5 and 6). However, the focus for the next 18-24 months is on development activities to support future production rates. An optimised feasibility study is underway, with results expected in the first quarter of 2027.

The central Copper Wolf project area covers approximately 12.5 square kilometres and includes the Bobcat and Rattler prospects. The project is located within a prolific porphyry copper belt in Arizona. Historical exploration has confirmed porphyry-style mineralisation and alteration throughout much of the project area. The first diamond drill holes by the joint venture confirmed a large, mineralised porphyry copper-molybdenum system with a vertical extent of over 600 metres.

The Kwinana Refinery is a fully automated facility that processes spodumene concentrate from the Greenbushes mine into battery-grade lithium hydroxide. It is one of the largest such facilities globally and the first to be built in Australia. The refinery is located approximately 35km south of Perth and 200km north of the Greenbushes mine.

Production overview - 2025: lithium 6782 t; 2024: lithium 3508 t.

The refinery processes spodumene concentrate into battery-grade lithium hydroxide. The process flow sheet includes calcining, acid roasting, leaching, purification, and crystallization.

In January 2025, the joint venture partners, IGO and Tianqi Lithium Corporation, agreed to cease all works and activities on the second planned production train (LHP2). Tianqi Lithium stated that continuing with the project was "economically unviable".

approximately 950 workers (2018)

Production overview - 2025: gold 91160 oz; 2023: gold 2.8106055705 t, silver 22415 oz.

on-site mill has a processing capacity of 3,730 tonnes per day.

In March 2026, Orezone Gold Corporation completed the acquisition of the Casa Berardi mine from Hecla Mining Company. Orezone plans to integrate the mine into its operations throughout 2026 and will publish an updated mine plan and economic study in the fourth quarter of 2026. The new owner has initiated trade-off studies to optimise the current mine plan and potentially increase underground production. A multi-year exploration drilling program is planned to begin in the second quarter of 2026, with a target of 80,000 to 100,000 metres per year.

The Silver Valley/Star project is an exploration-stage asset owned by Hecla Mining Company, located in the Coeur d'Alene Mining District of northern Idaho. The project is part of Hecla's extensive land package in the Silver Valley, a historically prolific silver-producing region. The historic Star mine, which is part of this project, is not currently in production, with mining operations having ceased in the early 1990s. Hecla is undertaking a renewed exploration focus across its land holdings in the Silver Valley, which accounts for 9% of its exploration budget.

Hecla is undertaking a renewed exploration focus across its land holdings in the Silver Valley, which accounts for 9% of its exploration budget. The company's recent efforts are aimed at expanding the resource base through systematic and data-driven discovery. Project targets include extensions of existing ore deposits and untested geochemical anomalies. In 2011, Hecla completed rehabilitation of the Star 2000 level to provide access for underground drilling to evaluate extensions of past-producing vein systems.

The San Juan Silver project is situated in Colorado, United States, and is categorised as an underground mine currently under development. Hecla Mining Company holds a 100% ownership stake in the project. Hecla Mining describes the San Juan Silver project as a "high-impact development project" and a "longer-term exploration asset", indicating it is still in the early stages of development. Within the project area, the Bulldog Mine has an inferred resource of 38 million ounces of silver, 49,400 tons of lead, and 39,850 tons of zinc. This historic mine produced 25 million ounces of silver between 1969 and 1985.

Production overview - 2025: silver 36760 koz, gold 26 koz, lead 49270 t, zinc 40310 t; 2024: silver 37026 koz, gold 27 koz, lead 47430 t, zinc 38020 t.

600 jobs

Rock Creek is a pre-development underground project targeting silver and copper, with an anticipated room-and-pillar mining method. The project's development has been subject to legal challenges, and Hecla has withdrawn its Plan of Operations. Inferred mineral resources were reported as of 31 December 2023.

Production overview - 2023: silver 148291000 oz, copper 656060 t.

Conventional froth flotation process producing a copper/silver-based concentrate. Initial processing includes an underground crusher, with above-ground facilities for further crushing and grinding. Tailings were planned to be stored in a tailings impoundment.

The Monte Cristo project is an exploration-stage asset located in the Walker Lane Trend in Esmeralda County, Nevada. It comprises a six-mile mineralised trend with multiple targets. Drilling has indicated mineralisation with grades over 0.1 oz/ton gold and >5 oz/ton silver. In areas that have not yet been drilled, rock chip sampling has yielded results up to 0.46 oz/ton gold and 2.5 oz/ton silver. Historical records also identify molybdenum as a primary commodity at the site. Hecla Mining Company holds a 100% interest in the project. The property consists of 334 unpatented lode claims and 10 leased unpatented lode claims, covering approximately 6,880 acres.

Historical production from the McLean pit between 1989-1990 amounted to 300,000 tons of ore at a grade of 2.4 g/t gold.

According to reports from early 2026, the metallurgical recovery estimate for the inferred resource is 85% for both gold and silver. A report from early 2025 cited metallurgical recovery estimates for the inferred resource as 90% for both gold and silver. The inferred resource for year-end 2025 was reported with a 0.094 oz/ton gold cut-off grade. The inferred resource for year-end 2024 was reported with a 0.10 oz/ton gold cut-off grade.

The project is undergoing systematic advancement, which includes detailed mapping, geochemistry, and the creation of cross-sections to bring targets to a drill-ready status. For 2026, Hecla Mining Company plans to invest $55 million in exploration and pre-development across its portfolio, which is nearly double the investment made in 2025. A significant focus of this increased investment is on its Nevada projects, including Monte Cristo.

30 to 35 jobs

The Libby Exploration Project, formerly known as the Montanore project, is a significant silver and copper exploration venture operated by Hecla Mining Company. Located in Lincoln County, Montana, the project is currently in a 16-year exploration and evaluation phase to determine economic viability. The United States Forest Service (USFS) authorized exploration in October 2025, but the project faces legal challenges from environmental groups. The exploration plan involves dewatering and rehabilitating an existing 7,000-foot tunnel, which will then be extended by an additional 4,200 feet for further underground exploration and drilling. Should exploration yield positive results, a new Plan of Operations for a full-scale mine would be submitted.

If the studies are supportive, a new Plan of Operations for a full-scale mine would be submitted, triggering a separate and new permitting process.

The Kinskuch property is now a part of Dolly Varden Silver's consolidated Kitsault Valley Project, located in the "Golden Triangle" of northwestern British Columbia. The acquisition increased Dolly Varden's total land package in the area to approximately 77,000 hectares. The property is considered highly prospective and underexplored for silver, gold, and copper mineralization. The Kinskuch property is covered by a five-year Exploration Permit on both Nisga'a and Gitanyow Traditional Lands. There is no active mining, and the project is in an exploration and resource definition phase. Dolly Varden's exploration plans for the broader Kitsault Valley Project include a minimum of 35,000 metres of diamond drilling which commenced in 2025. The acquisition added the Illiance trend to Dolly Varden's holdings, which has seen limited modern exploration.

three employees

The Hollister mine, 100% owned by Hecla Mining Company, is an underground gold-silver operation in Nevada, United States. It is currently on care and maintenance, with production suspended in Q3 2019. Open-pit mining occurred from 1990-1992, and modern underground production began in 2007. Ore was historically processed at the Midas mill. The deposit is a low-sulfidation epithermal system with high-grade veins, with future development interest in the Hatter Graben.

Production overview - 2022: gold 2205 oz.

Historically, ore from Hollister was processed at the nearby Midas mill.

An area of interest for future development is the Hatter Graben, a vein system located east of the current underground workings. Development of this resource would require state and federal approvals for waste rock and water management. In the first quarter of 2022, an unexpected inflow of water was encountered during exploration of the Hatter Drift.

For the year 2018, the budgeted underground workforce was 125 individuals, comprising 54 miners, 42 non-miner hourly staff, and 29 supervisory and technical personnel.

The Fire Creek mine is an underground gold and silver project located in Lander County, Nevada, in the United States. The project is fully owned by Hecla Mining Company. The mine's operating status is currently care and maintenance, which was initiated in the second quarter of 2021 after the processing of the remaining non-refractory ore stockpile. Hecla Mining acquired the Fire Creek mine in July 2018.

In 2021, mine production at Fire Creek continued through the first half of the year before operations were suspended.

Non-refractory ore from Fire Creek was processed at the Midas mill, which has a capacity of 1,200 tons per day. An agreement was made in 2020 with Nevada Gold Mines to process a 30,000-ton bulk sample of refractory ore from Fire Creek at one of their facilities.

jumbos, loaders (LHD), haul trucks, bolters, and other support equipment

The Connaught project is an exploration-stage asset located in the Dawson mining district of west-central Yukon, Canada, approximately 65 kilometres west of Dawson City. Hecla Mining Company acquired the Connaught project in July 2023 through its acquisition of ATAC Resources Ltd. The project is part of a large land package of over 700 square miles (1,830 square kilometres) that also includes the Rackla property. Hecla has stated that the acquisition of the Connaught and Rackla projects consolidates their position in the Yukon and aligns with their strategy of acquiring significant land packages in highly prospective and tier-one mining jurisdictions. The company has noted it is not obligated to make significant expenditures over the next decade to maintain control of the land package, allowing for flexibility in the pace of exploration spending. While Hecla announced a nearly doubled exploration and pre-development budget of $55 million for 2026, the focus of this increased investment has been publicly directed towards its operations in Nevada, and at its Greens Creek (Alaska), Keno Hill (Yukon), and Lucky Friday (Idaho) mines. There have been no specific announcements from Hecla regarding a new budget or exploration program for the Connaught project since its acquisition.

The site has an existing 600 ton-per-day mill.

In November 2025, Hecla Mining received federal approval for its 2026 exploration program at the Polaris Exploration Project, located within the Aurora mining district. The program will test multiple high-grade epithermal vein systems. The Aurora project has existing infrastructure and significant private land holdings which are expected to reduce future permitting requirements.

Production overview - 2025: silver 3020000 oz, lead 3630 t, zinc 2240 t; 2024: silver 2773873 oz, lead 2658.07 t, zinc 1367.09 t.

The site has fully permitted infrastructure, including a 400 tonne per day mill and an on-site camp facility. The planned throughput rate is 440 tons per day. As of February 2026, a newly constructed backfill plant was being commissioned.

Hecla is accelerating investment in exploration, with a company-wide budget of $55 million for 2026, nearly double the previous year. The primary exploration focus at Keno Hill is on a high-potential vein intersection northeast of the Deep Bermingham ore body and expanding resources in the Bermingham Bear Zone. Management anticipates a potential for an additional 50 million ounces of silver resources at the site. The Yukon government is reviewing several recent documents related to the mine's infrastructure, including March 2026 submissions for the Dry Stack Tailings Facility. The property is located within the traditional territory of the First Nation of Na-Cho Nyak Dun, and business agreements are in place with the First Nation of Na-Cho Nyak Dun Development Corporation.

397 (296 hourly and 101 salaried employees) in 2022

The Lucky Friday Mine is a deep underground silver, lead, and zinc mine in the Coeur d'Alene Mining District in northern Idaho. It is located about one mile east of Mullan. Hecla Mining Company pioneered the Underhand Closed Bench (UCB) mining method at the site to enhance safety and productivity. The mine's #4 Shaft project is now complete and operational, providing access to high-grade ore in the Gold Hunter/Lucky Friday Expansion Area.

Production overview - 2025: silver 5300000 oz, lead 34280 lbs, zinc 14920 lbs; 2024: silver 4890949 oz, lead 31265 t, zinc 13513 t.

The mine's mill produces silver-lead and zinc concentrates. For 2025, actual metallurgical recoveries were 94.5% for silver, 94.3% for lead, and 85.1% for zinc.

The #4 Shaft project, an internal shaft reaching 9,600 feet below the surface, is now complete and operational. A surface cooling project, critical for managing temperatures at increasing depths, was 79% complete at the end of 2025 and is expected to be finished by mid-2026. Hecla plans to invest up to $73 million in the operation in the coming years, with capital investment tied to underground development, a new tailings facility, and the surface cooling project.

approximately 512 people (as of 2024)

Greens Creek Mine is an underground operating mine located in Alaska, United States. It produces silver, gold, lead, zinc, and copper. The mine began production in 1989 and has an ore concentrating mill with a capacity of approximately 2,300 tons of ore per day. Primary mining methods include cut and fill and longhole stoping. Hecla Mining Company holds 100% ownership. A tailings facility expansion is expected to extend capacity to 2045, with a five-year surface exploration plan approved in early 2026 to potentially extend the mine's life further. As of 2024, it employed approximately 512 people.

Production overview - 2025: silver 8700000 oz, gold 59349 oz, lead 18200 t, zinc 51300 t; 2024: silver 8500000 oz, gold 55275 oz, zinc 51288 t, lead 18320 t, copper 1874 t.

The mine has an ore concentrating mill and produces approximately 2,300 tons of ore per day. The primary mining methods are cut and fill and longhole stoping. In 2024, 46% of tailings were reused as backfill.

A tailings facility expansion is expected to increase tailings capacity to 2045. A five-year surface exploration plan was approved in early 2026 to potentially extend the mine's life. Capital investment in 2026 will be partly for the expansion of its tailings facility. The U.S. Forest Service approved a five-year plan of operations for the Greens Creek Surface Exploration Project, which was expected to begin in the spring of 2026.

over 2,200 employees and contractors as of November 2025

The Platreef PGM-Nickel Mine officially opened and produced its first concentrate on 18 November 2025. The Phase 1 concentrator has a milling capacity of 770,000 tonnes per annum, processing lower-grade development ore and expected to transition to higher-grade ore in Q2 2026. Shaft 3 is scheduled to be operational by April 2026, increasing hoisting capacity to 5 Mtpa. A 5-megawatt solar power facility was completed in Q1 2025.

First concentrate produced on 18 November 2025. Initial sale of concentrate in late 2025. Phase 1 concentrator expected to operate at 80% of nameplate capacity by mid-2026. Long-hole stoping expected to commence in Q2 2026.

crushing, milling, and flotation to produce a concentrate containing platinum, palladium, rhodium, gold, nickel, and copper. Phase 1 concentrator has a milling capacity of 770,000 tonnes per annum.

battery-electric mining equipment, M2C drill rigs, 14-tonne load haul dumpers

The mine is being developed in multiple phases. Phase 2 expansion is underway, targeting completion in Q4 2027, to increase total processing capacity to 4.1 Mtpa and produce approximately 450,000 oz 3PE+Au, plus over 30 Mlbs nickel and copper. A $700 million senior project finance facility was secured for Phase 2. A future Phase 3 expansion is being evaluated to further increase processing capacity to 10.7 Mtpa, projected to more than double annual production to over 1 Moz 3PE+Au, plus approximately 22,000 tonnes nickel and 13,000 tonnes copper.

667 (as of December 31, 2024)

Production overview - 2025: zinc 203168 t; 2024: zinc 50307 t.

A new 800,000-tonne-per-annum concentrator was completed in May 2024, with the first concentrate produced in June 2024. The plant uses dense media separation (DMS), milling, and flotation. A debottlenecking program is expected to increase the processing capacity to 960,000 tonnes per annum in the third quarter of 2025.

The mine utilises Shaft 5 (P5) as the main production shaft with a maximum hoisting capacity of 1.8 million tonnes per annum. The main haulage level is at 1,150 metres. A new primary rock crusher was installed at the 1,150-metre level. The mine uses modern, trackless, mobile machinery for hauling ore and waste.

Ivanhoe Mines and its state-owned partner Gécamines signed a new joint venture agreement in late 2023 to return the Kipushi mine to production. Under the new agreement, Gécamines' ownership in the project will increase from 32% to 38%. The first concentrate from the new plant was produced in June 2024. A debottlenecking program is underway to increase the concentrator's throughput capacity by 20% to 960,000 tonnes of ore per annum, and is expected to be completed in the third quarter of 2025.