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The Aurora mine is operated by Hecla Mining Company's wholly-owned subsidiary, Klondex Aurora Mine, Inc. The project is currently in an advanced exploration phase. The Polaris Exploration Project, a ten-year gold exploration plan, completed its federal permitting process in March 2026, clearing the way for exploration activities to commence.

The Aurora Mining District has a historical production of 1.9 million ounces of gold and 20 million ounces of silver. Historical underground production averaged 2.24 ounces per ton of gold.

There is an existing 600-ton-per-day mill on site. A minor modification to the mine's Water Pollution Control Permit was completed to allow the recommencement of mill operations to process historical tailings from Tailings Storage Facility 1 (TSF1). The reprocessed tailings are to be deposited in the fully lined Tailings Storage Facility 2 (TSF2), which was commissioned in 2012.

Hecla's 2026 exploration program, the Polaris Exploration Project, will test multiple high-grade epithermal vein systems. Targets include near-surface systems (Martinez, Juniata, Ann) and deeper preserved systems (Brawley Peak, Sawtooth Ridge, Polaris). The Plan of Operations allows for the construction of up to 25 miles of new or reconstructed roads and up to 250 drill pads over a ten-year period, with total surface disturbance not to exceed 150 acres. The reclamation permit authorises an initial Phase I disturbance of 28.9 acres, with a subsequent phase of 121.1 acres proposed.

512 in 2024, 530 in 2025

Production overview - 2025: silver 8.7 Moz, gold 59349 oz, zinc 51.3 kt, lead 18.2 kt; 2024: silver 8.5 Moz, gold 55275 oz, zinc 51288 t, lead 18424 t.

The mine uses a conventional flotation concentrator that produces a gravity gold concentrate, a silver concentrate, a zinc concentrate, and a precious metals concentrate. The primary mining methods are cut and fill and longhole stoping.

The U.S. Forest Service has approved an expansion of the tailings disposal facility to accommodate the extended mine life. This involves increasing the storage capacity for tailings and waste rock. The first phase will add approximately 1.9 million cubic yards of capacity over three years, with a second phase planned to add a further 2.7 million cubic yards. Capital investment at Greens Creek is primarily directed towards mine development and the engineering and construction of this tailings facility expansion.

The Republic Project is an exploration-stage asset wholly owned and operated by Hecla Mining Company in Ferry County, Washington. It encompasses 3,583 acres, including historically productive trends like Knob Hill. Hecla considers it an "emerging opportunity" and is using 3D modelling and modern exploration tools to assess its potential as Washington's largest historic gold producer.

The Monte Cristo project is an exploration-stage gold and silver property wholly owned and operated by the United States mining company, Hecla Mining Company. It is located in Esmeralda County, Nevada, within the Walker Lane Trend, a significant mineralised belt. The project is considered to have potential for both underground and open pit mining methods.

The Kinskuch property is now part of Dolly Varden Silver's larger Kitsault Valley Project, located in the Golden Triangle of British Columbia. The acquisition increased the total size of the Kitsault Valley Project to approximately 77,000 hectares. The project is considered to be prospective for hosting precious metal deposits. Dolly Varden Silver has indicated plans for geological mapping and reconnaissance to generate drill targets.

Dolly Varden Silver Corporation acquired 100% ownership of the Kinskuch property from Hecla Mining Company in May 2025.

2 (as of 2024)

The Fire Creek mine is an underground gold and silver mine located in Lander County, Nevada, United States. It is wholly owned and operated by Hecla Mining Company. The mine is currently on care and maintenance status, a decision made in the second quarter of 2021 after the processing of the remaining non-refractory ore stockpile. The geological deposit is a low-sulfidation, epithermal deposit.

Production overview - 2021: gold 26214 oz, silver 37400 oz; 2019: gold 52616 oz, silver 63279 oz.

processing of non-refractory ore stockpile

processing plant

Future of the mine is dependent on exploration and development efforts to justify a restart of operations. Budgeted exploration program for Nevada assets, including Fire Creek, significantly increased for 2026 due to positive results in 2025. Part of a strategic review and priority reranking of Hecla's Nevada portfolio in 2025.

The Connaught project is located in the Dawson area of the Yukon. It is situated at the head of the Sixty Mile placer camp near Dawson City and is road-accessible. It hosts 26 distinct silver-lead-gold-copper epithermal veins and four copper-molybdenum porphyry targets.

Hecla Mining acquired the Connaught project as part of its acquisition of ATAC Resources, which also included the Rackla project. Hecla has stated that the acquisition of these large land packages in a favourable mining jurisdiction is part of its ongoing strategy. In a February 2026 announcement, Hecla reported it would be significantly increasing its overall exploration budget, with a focus on assets including those in the Yukon. Prior to the acquisition, in January 2023, ATAC Resources announced results from an exploration program that included 8 RC holes totalling 2,164.08 metres, which confirmed the presence of multiple porphyry targets.

The site has an existing 600-t/d mill.

As of December 2025, the Nevada Operations, which include Aurora, are on care and maintenance. In late 2025, Hecla Mining's subsidiary, Klondex Aurora Mine Inc., received federal approval for the Polaris Exploration Project in the Aurora mining district. This allows for exploration activities to commence in 2026. Hecla Mining has indicated that the existing infrastructure will be evaluated for refurbishment depending on the results of ongoing technical and economic assessments. For 2026, Hecla has planned a total investment of $55 million for exploration and pre-development across its properties, which is nearly double the investment made in 2025. A portion of this increased budget is focused on its projects in Nevada.

more than 250 employees and contractors

Production overview - 2025: gold 38037 oz, antimony 817 t; 2024: gold 43346 oz, antimony 1282 t.

The Brunswick Processing Plant has a capacity of approximately 150,000 tonnes per year. The plant uses a conventional flotation process to produce a gold-antimony concentrate and a separate gravity gold concentrate. The processing circuit includes two-stage crushing and two ball mills.

The mine utilises a narrow vein mining method. In recent years, the autonomous fleet at Costerfield has been increased with the commissioning of ControlMaster® Teleremote and Guidance Automation on Sandvik LH203 and Sandvik LH151D loaders.

A sustained exploration program is ongoing, with a focus on near-mine targets to extend the mine life. Development to access the newly extended Kendal system, which is the up-dip continuation of the Youle and Shepherd deposits, began in late 2025. The True Blue deposit, located approximately 2 km from current workings, is also a key exploration focus.

Production overview - 2025: gold 41364 oz; 2024: gold 42323 oz.

The processing plant has a capacity of 1.4 million tonnes per annum and utilises conventional crushing and grinding, followed by a gravity circuit and a flotation circuit to produce gold concentrates.

The plant includes multiple crushers, a ball mill, and a rod mill.

Exploration in 2024 and 2025 has focused on near-mine extensions, with the discovery of a new high-grade underground skarn zone, the "Lake Zone Skarn", and the "North Zone Below Marble". Alkane Resources is also actively exploring the nearby Storheden deposit, which is expected to supplement the ore feed to the Björkdal plant.

Ore from the Hub deposit can be processed at either the Laverton or Leonora processing facilities, providing significant flexibility to Genesis' production centre.

Mining at the Hub open pit is conducted by Genesis Mining Services (GMS), Genesis' in-house mining services provider.

Genesis Minerals' acquisition of Dacian Gold in 2023 gave it full ownership of the Redcliffe Project. Final mining approvals for the high-grade Hub deposit were received in October 2023. Mining at the Hub open pit commenced ahead of schedule, with the first ore delivered in September 2024. The project consists of several deposits including Redcliffe, Hub, GTS, Nambi, Kelly, Bindy and Mesa Westlode.

Production overview - 2025: gold 6000 oz.

The ore from the Jupiter Project is processed at the adjacent Laverton mill. The mill is a standard Carbon-In-Leach (CIL) and Carbon-In-Pulp (CIP) processing plant with a throughput of approximately 3 million tonnes per annum. The processing circuit includes a jaw crusher and a ball mill. Genesis Minerals' ore recovery at the Laverton mill has been consistent at 91.2%

A third mining fleet was commissioned for the commencement of open-pit mining at the Jupiter Project. In the first half of fiscal year 2026, Genesis Mining Services mobilised two new excavators and a fleet of new trucks to the site.

Open pit mining at the Jupiter Project commenced in the September 2025 quarter, providing a reliable source of baseload feed for the Laverton mill. The initial mining activities in the first half of fiscal year 2026 focused on a cutback on the eastern side of the Doublejay pit. Regulatory approvals and permits for the ongoing mining and processing at the Jupiter Mining Area have been granted.

Production overview - 2025: gold 1000000 oz.

The project includes the design, procurement, construction, installation, and commissioning of a new gold processing facility with a planned capacity of approximately 4 million tonnes per annum (Mtpa). The plant will be located approximately 1 kilometre from the mine, near the existing Leonora processing plant.

Development of the Tower Hill project is progressing ahead of schedule, including a new gold processing facility (EPC contract $225M plus $20M for long-lead items) and shortening of the Leonora rail line (A$80M). Key milestones include Stage 1 Mining Proposal approval (Sep 2025) and rail line agreements (Nov 2025).

The Harbour Lights Project, located 1.5 km north-west of Leonora, Western Australia, is an evaluation-stage refractory gold project. It has a historical mining record (1904-1935 underground, 1985-1992 open pit). A February 2026 Mineral Resource estimate reported 14 Mt at 1.7 g/t Au for 750,000 oz contained gold.

Production overview - 2025: gold 23.32 t.

The mine operates on a fly-in-fly-out (FIFO) basis with a roster of 8 days on site and 6 days off.

Production overview - 2025: gold 25200 oz.

Ore is processed at the Leonora mill located at Gwalia, which is a conventional carbon-in-pulp (CIL) circuit. The plant has a nominal capacity of 1.2 million tonnes per annum (Mtpa) for hard rock, which can increase to 1.8 Mtpa when softer material is blended. The mining method is long-hole open-stoping with paste backfill.

The truck fleet includes six DAT 60 and three Atlas Copco MT 6020 trucks. The loader fleet includes one Sandvik LH621 and three Caterpillar R2900 loaders.

Genesis Minerals is conducting ongoing development to provide continued access to the high-grade "Heart of Gold" area, with development of the 1880H and 1900H levels. The mine is Australia's deepest underground gold mine. In January 2026, Genesis announced that Byrnecut had been selected as the new underground mining contractor for Gwalia and Ulysses, with the contract expected to commence in May 2026.

Production overview - 2024: gold 20876 oz.

Ore from Admiral Operations is transported approximately 40 kilometres to the Leonora processing mill. The Leonora facility is a conventional 1.4 million tonnes per annum (Mtpa) Carbon-in-Leach (CIL) plant.

Mining operations are conducted by Genesis Mining Services, which utilises a fleet including: Hitachi EX1200-7, EX2000-7 and EX2600-7 excavators; Komatsu PC1250-11R excavators; Komatsu HD1500-8 dump trucks; Komatsu HD785-7 watercart; CAT D10T2 dozers; CAT 16M graders. An ASX announcement in July 2023 mentioned the procurement of an EX2000 excavator and an HD1500 truck fleet for the operation.

Admiral was fast-tracked to supply ore to the under-utilised Leonora mill, in conjunction with high-grade ore from the Gwalia underground mine.

The Bendigo-Ophir Gold Project is located on the South Island of New Zealand, one hour drive east of Queenstown’s international airport. The tenements cover 251 square kilometres in the Central Otago goldfields, 90 kilometres northwest of OceanaGold’s world-class Macraes gold mine where previous production and mineral resources total in excess of 8 million ounces of gold. The project contains a new Mineral Resource Estimate (MRE March 2025) Infill drilling, including 28 drill holes for 7,060 metres at the Rise & Shine (RAS) deposit has enabled a significantly refined resource model with improved grade domaining and variography. Applying 0.5g/t cut-off grade and a top cut of 60g/t, the new Indicated Resource has a 7% increase in grade (from 2.35g/t to 2.52 g/t) and a 6.4% increase in contained gold ounces. The Bendigo-Ophir resources occur in 4 deposits named Rise and Shine (RAS), Come-in-Time (CIT) and Srex/Srex East (SRX/SRE), that extend in a northerly direction within the Rise & Shine Shear Zone (RSSZ) which hosts gold mineralization over a recognised strike length of >20km. The RSSZ occurs at the contact with TZ3 and TZ4 schist units separated by a regional fault (Thomsons Gorge Fault-TGF) and dips at a low angle (25°) to the north-east. The RSSZ is currently interpreted to have upper shear hosted gold mineralization (HWS) 10-40 metres in width above quartz vein and stockwork related gold mineralization extending >120 metres below the HWS which is largely untested down-plunge and at depth.

During the 2018 exploration program, the workforce was comprised of a core group of IGO employees and specialised contract staff, depending on the activity. IGO provided a site manager/geologist and a senior field assistant to log and sample material.

The Lake Mackay Project is an exploration project and is not operational. The project's tenements straddle the state border between the Northern Territory and Western Australia, primarily located in the Northern Territory, north and northeast of the community of Kintore. The project is situated approximately 400km west-northwest of Alice Springs. It is a series of joint ventures (JVs) between IGO Limited, Prodigy Gold NL (ASX: PRX), and in some parts, Castile Resources Pty Ltd. The project is prospective for copper, gold, nickel, cobalt, silver, zinc, and lead.

No production outputs as it is an exploration project.

No processing plant exists as the project is in the exploration phase. Bench-scale atmospheric leach extraction test work has been conducted on cobalt-nickel-manganese duricrust from the Grimlock Prospect, which indicated high metallurgical recoveries.

aircore, reverse circulation (RC), and diamond drilling rigs. Specific contractors mentioned include Wallis Drilling Pty Ltd for aircore drilling, and Frontline Drilling Australia Pty Ltd for RC drilling with a KWL 700 or Schramm 685 truck-mounted rig. West Core Drilling Pty Ltd has also been contracted. IGO has a dedicated ground Electromagnetics (EM) crew, with other ground geophysics conducted by contractors. Spectrem Air has conducted airborne EM surveys. XM Logistics has been utilised for providing additional exploration equipment and personnel.

BHP has approximately 8,000 employees working across its Copper SA projects, which includes Olympic Dam.

Olympic Dam is one of the world's most significant polymetallic orebodies, comprising an underground mine and a fully integrated processing facility. It is located 560 kilometres north of Adelaide. The operation is a part of BHP's Minerals Australia operation and has been owned and operated by BHP since 2005.

Production overview - 2025: copper 316 kt, gold 361 koz, uranium 3.2 kt; 2024: copper 322 kt, gold 370 koz, uranium 3.6 kt.

The operation features a fully integrated metallurgical complex. This includes a grinding and concentrating circuit, a hydrometallurgical plant with solvent extraction for copper and uranium, a copper smelter, a copper refinery, and a recovery circuit for precious metals.

Ore is hauled underground via an automated train system to crushing, storage, and hoisting facilities.

BHP is advancing a series of growth projects at Olympic Dam. A new decline to the Southern Mine Area is progressing, with completion expected in FY2028, which is anticipated to unlock up to 2.5 million tonnes per annum of additional vertical capacity. The company is also studying a potential Smelter and Refinery Expansion (SRE). A potential Final Investment Decision is on track for the 2027 calendar year. The first phase would increase concentrate smelting capacity to between 1,100 and 1,400 ktpa.

Approximately 8000 employees work across BHP's Copper SA projects, with about 2500 of those working underground at Olympic Dam and 1000 in surface processing.

Production overview - 2024: uranium 3603 t; 2023: copper 212000 t, gold 186000 oz, uranium 3406 t.

The Olympic Dam operations include a fully integrated underground mine and an above-ground metallurgical complex. Ore mined underground is transported by an automated train system to crushing, storage, and hoisting facilities. The metallurgical complex features a grinding and concentrating circuit, a hydrometallurgical plant with solvent extraction for copper and uranium, a copper smelter, a copper refinery, and a recovery circuit for precious metals.

BHP is investing over A$840 million in several projects to enhance productivity at Olympic Dam. This investment includes developing an underground access tunnel into the Southern Mine Area, a new backfill system to access new sections of the mine, expanding the ore pass capacity, and installing a new oxygen plant to improve smelter performance. The company is also assessing options for a new two-stage smelter, with a final investment decision anticipated between the 2026 and 2027 financial years. There are plans to potentially increase annual copper production at Copper South Australia to over 500,000 tonnes per annum.

Olympic Dam is a fully integrated metallurgical complex operating as an underground mine in South Australia. It processes copper, uranium, gold, and silver, and includes a grinding and concentrating circuit, hydrometallurgical plant, copper smelter, and refinery. Recent developments include the integration of Prominent Hill and Carrapateena concentrates, leading to record production in FY2024, and ongoing investments in underground infrastructure and smelter performance.

Production overview - 2023: copper 212000 t, gold 186000 oz.

The mine operates as a fully integrated metallurgical complex. The process includes an underground automated train system to haul ore, a grinding and concentrating circuit, and a hydrometallurgical plant with solvent extraction for copper and uranium. It also features a copper smelter, a copper refinery, and a recovery circuit for precious metals.

The underground mine is equipped with an automated train system for hauling ore. As part of recent investments, the underground electric rail network is being expanded from 4.85 kilometres to over 6 kilometres, supported by six new locomotives.

BHP is investing over A$840 million in several projects to enhance productivity. Key projects include: A new underground access tunnel, known as a decline, into the Southern Mine Area; a new backfill system; an expansion of ore pass capacity; and the installation of a new oxygen plant. A major expansion of the smelter and refinery is also under consideration, with a final investment decision for the first phase anticipated in the first half of the 2027 fiscal year (shifted from 2027 to 2028).

approximately 3,500 people

The Olympic Dam mine is a fully integrated metallurgical complex in South Australia, operating since 1988. It employs approximately 3,500 people and extracts copper, uranium, gold, and silver using sub-level open stoping underground mining and surface processing. The mine has an estimated life of 57 years based on known reserves as of 2022. BHP is investing over A$840 million in productivity enhancements and is proposing a Smelter Refinery Expansion Project to increase copper production capacity.

Production overview - 2023: copper 212000 t, gold 186000 oz.

The mine is a fully integrated metallurgical complex. The process includes a grinding and concentrating circuit, a hydrometallurgical plant with solvent extraction for copper and uranium, a copper smelter, a copper refinery, and a recovery circuit for precious metals. Ore is extracted using the sub-level open stoping underground mining method. Mined ore is transported to the surface via an automated train system and trucks using decline tunnels.

The underground operations feature more than 700 km of roads and tunnels. Recent investments are funding an expansion of the underground electric rail network from 4.85 km to over 6 km, supported by six new locomotives. A new backfill system will deliver cement paste fill via underground pipes.

BHP is investing over A$840 million in several projects to enhance productivity. This includes developing an underground decline into the Southern Mine Area to access a new part of the resource, expanding ore pass capacity, and installing a new oxygen plant to improve smelter performance. The new oxygen plant is intended to increase copper concentrate smelting rates from 80 to 85 tonnes per hour. There is a proposed Smelter Refinery Expansion Project to increase copper production capacity up to 650,000 tonnes per annum. This proposal was declared an 'impact assessed development' by the South Australian government in August 2024.