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The Hollister mine is a low-sulphidation, epithermal gold-silver deposit located in Elko County, Nevada, on the Carlin Trend. It is currently on care and maintenance, with exploration advancing on the Hatter Graben vein system.

Development of a drift from the Hollister underground workings to the Hatter Graben area commenced in the third quarter of 2018. As of December 2025, state and federal approvals will be required for waste rock and underground water management for any development of the Hatter Graben or other mine expansions.

The Fire Creek mine, located in Lander County, Nevada, is an underground gold and silver mine wholly owned and operated by Hecla Mining Company. It entered care and maintenance in Q2 2021 after processing remaining ore. The deposit is a low-sulfidation, epithermal gold deposit. Hecla acquired the mine in July 2018. Its future depends on successful exploration and development to justify a restart.

Production overview - 2017: gold 107143 oz, silver 72283 oz; 2016: gold 101286 oz, silver 80593 oz.

Ore from Fire Creek was shipped to Hecla's Midas mill for gold recovery.

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.

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.

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 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 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.

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.

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.

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.

The Shoobridge Project is an exploration-stage project operated by Core Lithium Ltd in the Northern Territory, Australia, focused on lithium, gold, tin, tantalum, uranium, and base metals within the Pine Creek Orogen. Exploration activities include RC and diamond drilling.

reverse circulation (RC) and diamond drilling

The Connaught project is an exploration-stage asset with potential for copper-molybdenum-gold porphyry mineralisation and high-grade epithermal veins containing silver, lead, zinc, gold, and copper. It was acquired by Hecla Mining Company in 2023 through the acquisition of ATAC Resources Ltd. Historical small-scale extraction from shallow pits occurred in 1966 and 1976.

The Casa Berardi mine, in operation for over 35 years, has produced over 3.2 million ounces of gold. It is transitioning from a combined underground and open-pit operation to a surface-only operation, with lower-margin east mine underground operations ceased in July 2023.

Production overview - 2025: gold 91160 oz; 2023: gold 90363 oz, silver 22415 oz.

Orezone Gold Corporation plans to integrate the Casa Berardi operations throughout 2026 and intends to provide updated guidance for the mine in the second quarter of 2026. The new owner has initiated trade-off studies to optimise the current mine plan and evaluate an increase in underground production. An updated mine plan and economic study are expected to be published in the fourth quarter of 2026. Orezone also plans to commence a multi-year exploration drilling program of 80,000 to 100,000 metres annually.

The San Juan Silver project is a high-impact development project in the historic Creede Mining District in Colorado. Hecla Mining Company has single ownership of the entire district. The project's focus is on the historic Bulldog silver mine, which produced 25 million ounces of silver between 1969 and 1985. Hecla is strategically advancing the project to access the underground infrastructure to confirm and expand on existing resources. A 2013 surface drilling program intersected high-grade mineralisation 1,400 feet north of the Bulldog workings, confirming district-scale potential. The project has 30 miles of permissive strike length along known mineralised structures. San Juan Silver accounted for 1% of Hecla's exploration budget. As of February 2024, the project had an inferred resource of 38,203,000 ounces of silver, 49,400 tons of lead, and 39,850 tons of zinc.

Production overview - 2024: silver 38203000 oz, lead 49400 t, zinc 39850 t.

The Republic project is an exploration-stage asset located in the historic Republic Mining District in Ferry County, Washington. It is fully owned by Hecla Mining Company and covers 3,583 acres, which includes several historically productive trends. Hecla categorises the project as an emerging opportunity and focuses its exploration on identifying potential mineral deposits that are concealed by post-mineral cover.

The Monte Cristo project is an exploration-stage asset in Hecla Mining Company's Nevada portfolio. It is situated in the Walker Lane Trend, a significant mineralized zone. The project is characterised by a six-mile mineralised trend with multiple targets. Historical exploration has identified high-grade gold and silver at the surface. Hecla is engaged in ongoing detailed mapping, geochemistry, and cross-section generation to advance targets to a drill-ready status. The project is located on Bureau of Land Management (BLM) administered land and consists of 344 unpatented lode claims, covering approximately 6,880 acres.

The Kinskuch property is located in the Golden Triangle of British Columbia and is now part of Dolly Varden Silver's larger Kitsault Valley Project. The property is contiguous to the east and south of the existing Kitsault Valley Project. The acquisition of the Kinskuch property by Dolly Varden Silver has significantly increased the size of their Kitsault Valley Project to approximately 77,000 hectares. The addition of the Kinskuch property has tripled the total strike length of the favourable Jurassic-age Hazelton Group volcanic rocks. The Kinskuch property is considered underexplored, with limited modern exploration work. Dolly Varden Silver has indicated that initial plans for the property, following the acquisition in 2025, would include geological mapping and reconnaissance. There is potential for porphyry and skarn-style copper and gold mineralisation on the Kinskuch Project, which is on trend with the Big Bulk property.

8 (as of 2022, during care and maintenance)

The Hollister mine is an underground gold and silver mine located in Elko County, Nevada. It is fully owned and operated by Hecla Mining Company, through its subsidiary Klondex Hollister Mine Inc., following the acquisition of Klondex Mines Ltd. in July 2018. The mine is currently under care and maintenance, with production suspended in the third quarter of 2019.

Production overview - 2018: gold 26612 oz, silver 246080 oz.

Ore from the Hollister mine was transported to the Midas mill for processing. The resulting loaded carbon was then stripped at the Aurora mill.

Development to access new production areas at its Nevada Operations, including Hollister, was ceased in the second quarter of 2019 pending further evaluation.

125 people

The Fire Creek mine, located in Lander County, Nevada, is a low-sulfidation epithermal gold and silver deposit. It was placed on care and maintenance in Q2 2021 after processing remaining non-refractory ore stockpile, with a restart dependent on exploration success and development.

Production overview - 2020: gold 31800 oz, silver 37400 oz.

Historically, processing involved heap leaching for near-surface oxide ores. Deeper, high-grade sulphide ore was processed at the Midas mill.