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Minesites Directory

Browse minesites. Each card shows company ownership and their most recent associated articles.

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Page 4 of 59 (1393 total)
Bulyanhulu

Shinyanga Region, Tanzania · Underground

Operating
GoldCopperSilver
Companies & ownership
  • Barrick Gold Corporation
    TSX:ABX · NYSE:B
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Nevada Gold Mines

Nevada, United States · Open Pit

Operating
Gold
Commodities, grades and output
YearCommodityAv. GradeOutput
2023Gold-3 Moz
Opened
2019-01-01
End year
2050
Autonomous haulage
Yes
Workforce
7,000 (2024)
Overview
Nevada Gold Mines is a joint venture between Barrick Gold Corporation (operator) and Newmont Corporation, formed in 2019. It operates multiple open pit and underground mines in Nevada, United States, producing gold. The complex is undergoing significant reinvestment and equipment upgrades, including the deployment of an autonomous haulage system and 5G communications infrastructure.
Production
Production overview - 2023: gold 3 Moz.
Processing
The complex includes multiple processing facilities, including autoclaves, roasters, oxide mills, a flotation plant, and heap leach facilities. Nevada Gold Mines operates several pressure oxidation facilities (autoclaves) to process refractory ore. The Goldstrike autoclave has been converted to a carbon-in-leach process. The Turquoise Ridge Sage autoclave underwent significant equipment upgrades to improve reliability and performance. Heap leaching is used for low-grade gold ore.
Equipment
A fleet of 300 and 230-tonne haul trucks is being automated with Komatsu's FrontRunner Autonomous Haulage System. An agreement was signed in 2023 for the delivery of 62 new Komatsu 930E-5 haul trucks through 2025, with 47 delivered as of December 2024. The complex also utilises hydraulic shovels and electric rope shovels.
Expansion
Nevada Gold Mines is undergoing significant reinvestment to replace and upgrade equipment and infrastructure. Key developments include the Goldrush project, with permitting completed in 2023, and the deployment of an autonomous haulage system with customised 5G communications infrastructure.
Network
Private 5g
Companies & ownership
  • Barrick Gold Corporation
    TSX:ABX · NYSE:B
  • Newmont Corporation
    NYSE:NEM
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Republic Project

Washington, United States · Underground

Under Development
GoldSilver
Overview
The Republic site in Washington is an exploration project for Hecla Mining Company, considered an emerging opportunity. Hecla has allocated 1% of its 2025 exploration budget to the project, which consists of 3,583 acres encompassing historically productive trends. Modern exploration techniques, including 3D modelling, are being used, and recent exploration has yielded multiple high-grade gold intercepts, indicating potential for both underground and bulk-tonnage discoveries.
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Monte Cristo

Nevada, United States · Underground

Under Development
GoldSilver
Commodities, grades and output
YearCommodityAv. GradeOutput
2025Gold0.094 oz/t-
2024Gold0.1 oz/t-
Overview
The Monte Cristo project is part of Hecla Mining Company's Nevada exploration portfolio. It is situated in the Walker Lane Trend and is characterised by a six-mile mineralised trend. Hecla is undertaking detailed mapping, geochemistry, and the creation of cross-sections to advance targets to a drill-ready status.
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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San Juan Silver

Colorado, United States · Underground

Under Development
SilverGoldLeadZinc
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Monte Cristo

Nevada, United States · Open Pit

Under Development
GoldSilver
Overview
The Monte Cristo project is an exploration-stage asset in Hecla Mining's Nevada portfolio. The company's focus for the project is on advancing targets to a drill-ready status through detailed mapping, geochemistry, and the generation of cross-sections. The project is situated within the Walker Lane Trend, a six-mile mineralised trend with multiple targets. Surface rock chip sampling has shown results of up to 0.46 oz/ton gold and 2.5 oz/ton silver in areas that have not yet been tested.
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Kinskuch

British Columbia, Canada · Open Pit

Under Development
CopperGoldSilver
Overview
The Kinskuch property is located in the Golden Triangle of British Columbia and is contiguous with Dolly Varden's Kitsault Valley Project. The acquisition has significantly increased the size of the Kitsault Valley Project to approximately 77,000 hectares. Kinskuch is an exploration-stage project and is considered to be prospective for silver, gold, and copper mineralisation. There are no NI 43-101 compliant resources reported for the Kinskuch property.
Companies & ownership
  • Dolly Varden Silver Corporation
  • Hecla Mining Company
    NYSE:HL
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Hollister Mine

Nevada, United States · Underground

Care And Maintenance
GoldSilver
Commodities, grades and output
YearCommodityAv. GradeOutput
2025Gold0.38 oz/t141600 oz
2025Silver3.4 oz/t1251700 oz
Overview
Acquired by Hecla Mining Company in July 2018, the Hollister Mine suspended production in Q3 2019 and is currently under Care and Maintenance. Part of Hecla's Nevada Operations, the company is conducting exploration drilling in 2026 to expand resources and is considering a potential restart in approximately five years. Future ore would be processed at the nearby Midas mill.
Production
Production overview - 2025: gold 141600 oz, silver 1251700 oz.
Processing
Ore from any future operations would be hauled to Hecla's nearby Midas mill for processing. No processing components are permitted or planned for construction on the Hollister site.
Equipment
pre-existing mine infrastructure
Expansion
Hatter Graben expansion
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Fire Creek

Nevada, United States · Underground

Care And Maintenance
GoldSilver
Commodities, grades and output
YearCommodityAv. GradeOutput
2021Gold-26214 oz
2017Gold-107143 oz
2017Silver-72283 oz
2016Gold-101286 oz
2016Silver-80593 oz
2015Gold-77055 oz
2015Silver-92114 oz
Overview
The Fire Creek mine, located in Lander County, Nevada, was acquired by Hecla Mining Company in July 2018. It was placed on care and maintenance in Q2 2021 after processing remaining ore, with production suspended in H1 2021. Hecla is conducting studies for a potential restart. Initial exploration began in the 1930s, with Klondex Mines acquiring the property in 1980 and starting heap leaching in 1983. The deposit is a low-sulfidation, epithermal gold deposit in Miocene basalts and andesites.
Production
Production overview - 2021: gold 26214 oz; 2017: gold 107143 oz, silver 72283 oz.
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Greens Creek

Alaska, United States · Underground

Operating
SilverGoldZincLead
Commodities, grades and output
YearCommodityAv. GradeOutput
2025Silver-8700000 oz
2025Gold-59349 oz
2025Zinc-51300
2025Lead-18200
2023Silver-9700000 oz
2023Gold-60900 oz
2023Zinc-51500
2023Lead-19600
Opened
1989-01-01
End year
2045
Autonomous haulage
Yes
Workforce
512 (as of 2024)
Production
Production overview - 2025: silver 8700000 oz, gold 59349 oz, zinc 46538.6 t, lead 16510.8 t; 2023: silver 9700000 oz, gold 60900 oz, zinc 46719.8 t, lead 17780.8 t.
Processing
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 mill processes approximately 2,300 tons of ore per day.
Equipment
The mine utilises conventional diesel-powered rubber-tired equipment for mine development, including twin and single boom drilling jumbos, mobile explosives loading vehicles, load-haul-dump units (LHDs), and end-dump articulated haul trucks. The equipment fleet also includes one LHD capable of semi-autonomous operation and another capable of tele-remote operation.
Expansion
In January 2025, the U.S. Forest Service approved a five-year plan of operations for the Greens Creek Surface Exploration Project, which will test existing mineralised targets and identify new targets not accessible from underground operations. Capital investment in 2026 is expected to be higher than in 2025, partly due to the expansion of the tailings facility. The expansion is expected to increase tailings capacity to 2045. A tailings reprocessing initiative is also underway, with metallurgical work in progress.
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Cosmos Project

Western Australia, Australia · Underground

Care And Maintenance
NickelLithiumGold
Overview
The Cosmos Project, acquired by IGO Limited in 2022, transitioned to care and maintenance in June 2024 due to reduced mine life, increased costs, and declining nickel prices. IGO plans to preserve the option for future restart and is exploring rationalisation options, including potential for gold and other minerals. A lithium drilling program was completed in Q3 2025.
Processing
wet commissioning of the processing plant and processing existing ore on the run-of-mine pad
Companies & ownership
  • IGO Limited
    ASX:IGO
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San Juan Silver

Colorado, United States · Underground

Under Development
SilverGoldLeadZinc
Commodities, grades and output
YearCommodityAv. GradeOutput
2024Silver15.8 oz/t37026000 oz
2024Gold0.01 oz/t27000 oz
2024Lead1.4 %47430 t
2024Zinc1.1 %38020 t
Overview
San Juan Silver is an exploration-stage project owned by Hecla Mining Company, located in the Creede Mining District in southwestern Colorado, United States. The project encompasses a 25-square-mile consolidated land package, bringing the entire Creede Mining District under single ownership.
Production
Production overview - 2024: silver 37026000 oz, gold 27000 oz, lead 47430 t, zinc 38020 t.
Expansion
Hecla received a permit to construct a new decline to the Bulldog mine workings and rehabilitated the Equity ramp to commence an underground drilling program targeting silver and gold in the Equity and Amethyst veins.
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Republic Unit

Washington, United States · Underground

Closed
GoldSilver
Commodities, grades and output
YearCommodityAv. GradeOutput
1993Gold-49601 oz
1993Silver-276688 oz
1991Gold0.8834 oz/t77736 oz
1989Gold0.987315 oz/t74335 oz
1988Gold-70000 oz
1987Gold1.06922 oz/t70095 oz
1987Silver5.1892 oz/t341272 oz
1985Gold0.71346 oz/t39192 oz
1983Gold0.25353164 oz/t13800 oz
1983Silver1.35586722 oz/t73800 oz
1982Gold0.27557787 oz/t14000 oz
1982Silver1.65346722 oz/t84000 oz
End year
1995
Workforce
87 workers
Production
Production overview - 1993: gold 49601 oz, silver 276688 oz; 1991: gold 77736 oz.
Processing
crushing, flotation, and cyanide vat leaching
Equipment
Golden Promise shaft, mill with a capacity of 270 tons per day
Expansion
discovery of the Golden Promise orebody in 1984, Golden Promise shaft completed in November 1986 at a cost of $2.2 million
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Monte Cristo

Nevada, USA · Open Pit

Feasibility
GoldSilver
Overview
The Monte Cristo project is a gold and silver exploration-stage asset located in Esmeralda County, Nevada, USA, within the Walker Lane Trend. Hecla Mining acquired the project in 2012. It is in an exploration and pre-development phase, with activities including detailed mapping, geochemistry, and generation of cross-sections to advance targets to drill-ready status. The project is a six-mile mineralized trend with multiple targets, characterized by volcanic-hosted, low-sulfidation epithermal gold mineralization.
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Kinskuch project

British Columbia, Canada · Open Pit

Under Development
SilverGoldCopperLeadZinc
Overview
The Kinskuch project was an exploration-stage asset located in the Golden Triangle of British Columbia, Canada, near Alice Arm. Hecla conducted various exploration activities, including diamond drilling and airborne geophysical surveys, to assess the property's potential for silver, gold, copper, lead, and zinc mineralization, with potential for both underground and open-pit mining.
Companies & ownership
  • Dolly Varden Silver Corporation
  • Hecla Mining Company
    NYSE:HL
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Hollister Mine

Nevada, United States · Underground

Care And Maintenance
GoldSilver
Opened
1998-01-01
Overview
The Hollister mine is an underground gold and silver mine located in Elko County, Nevada. Hecla Mining Company acquired 100% ownership in July 2018. It is currently on care and maintenance, with production suspended in Q3 2019. The deposit is a large, low-sulfidation epithermal gold-silver deposit.
Processing
ore from the Hollister mine was processed at the company's Midas mill.
Expansion
exploration plans for the Hollister mine included evaluating the West Gloria Vein and other veins in East Hollister from underground, as well as advancing development towards the Hatter Graben area to evaluate and upgrade the veins there.
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Fire Creek

Nevada, United States · Underground

Care And Maintenance
GoldSilver
Workforce
125 people (54 miners, 42 non-miner hourly employees, 29 in supervision and technical roles) as per a 2018 technical report
Overview
The Fire Creek mine is an underground gold and silver project operated by Hecla Mining Company. It is located in Lander County, Nevada, in the United States. The deposit is described as a low-sulfidation, epithermal type. The deposit is characterized by high-grade, structurally intact tabular veins. The mineralization at Fire Creek dates back to the Miocene era.
Processing
Ore from Fire Creek was processed at the Midas Mill. The processing method for Fire Creek ore at the Midas Mill included grinding, gravity concentration, cyanidation, carbon-in-leach (CIL), and Merrill Crowe precipitation. In 2020, Hecla Mining reached an agreement with Nevada Gold Mines to process a 30,000-ton bulk sample of refractory ore from Fire Creek at one of their facilities.
Equipment
underground mobile equipment fleet
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Platreef Project

Limpopo province, South Africa · Underground

Operating
CopperPlatinumPalladiumGoldRhodiumNickel
Commodities, grades and output
YearCommodityAv. GradeOutput
2025Copper0.17 %-
2025Platinum1.95 g/t-
2025Palladium2.01 g/t-
2025Gold0.3 g/t-
2025Rhodium0.14 g/t-
2025Nickel0.34 %-
Opened
2025-11-18
Mine life
35 years
Workforce
Over 2,000 people, with 70% sourced from local communities (as of November 2025).
Overview
The Platreef Project is located on the Northern Limb of the Bushveld Igneous Complex, featuring the Flatreef deposit, a thick, high-grade, and flat-lying orebody suitable for mechanised, bulk underground mining. The project officially began production on November 18, 2025, with a phased development approach.
Production
Phase 1 operates with a 770,000 tpa concentrator. Phase 2 expansion will increase total processing capacity to 4.1 Mtpa, with expected average annual production of over 460,000 ounces of platinum, palladium, rhodium, and gold (3PE+Au), plus approximately 9,000 tonnes of nickel and 6,000 tonnes of copper. A potential Phase 3 expansion to 10.7 Mtpa processing capacity could further increase annual production to over 1 million ounces of 3PE+Au, approximately 22,000 tonnes of nickel, and 13,000 tonnes of copper.
Processing
Ore undergoes a multi-stage process of crushing, milling, flotation, thickening, and filtration to produce a concentrate.
Equipment
Shaft 1 (2.5 Mtpa hoisting capacity, 996 metres depth), Shaft 2 (6 Mtpa planned hoisting capacity), Shaft 3 (operational by April 2026, increasing total hoisting capacity to 5 Mtpa). Utilises battery-electric M2C drill rigs and 14-tonne load haul dumpers.
Expansion
Phase 2 expansion underway, targeted for completion in Q4 2027, adding a new 3.3 Mtpa concentrator for a total processing capacity of 4.1 Mtpa. A $700 million senior project finance facility has been signed for this expansion. A Preliminary Economic Assessment (PEA) outlines a potential Phase 3 expansion to 10.7 Mtpa processing capacity.
Power sources
Solar
Companies & ownership
  • Ivanhoe Mines Ltd.
    TSX:IVN · OTC:IVPAF
  • Japanese consortium
  • South African broad-based, black economic empowerment (B-BBEE) partners
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Rackla

Yukon, Canada · Open Pit

Under Development
GoldSilver
Overview
The Rackla project is a pre-development asset in Hecla Mining's exploration portfolio, located in the Yukon Territory. It comprises the Rackla-Tiger Project and the Rackla-Osiris Project. A Preliminary Economic Assessment (PEA) for the Tiger Deposit, completed in 2020, proposed an open-pit mining operation.
Expansion
Hecla's strategic plans for the Tiger Project include a desktop review in 2025, to be followed by a comprehensive exploration program in 2026. Hecla Mining has significantly increased its overall exploration budget, which includes activities in the Yukon, with a substantial investment planned for 2026.
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Platreef Project

Limpopo, South Africa · Underground

Operating
PlatinumPalladiumGoldRhodiumCopperNickel
Commodities, grades and output
YearCommodityAv. GradeOutput
2017Platinum1.95 g/t-
2017Palladium2.01 g/t-
2017Gold0.3 g/t-
2017Rhodium0.14 g/t-
2017Copper0.17 %-
2017Nickel0.34 %-
Opened
2025-11-18
Mine life
32 years
Workforce
more than 2,000 employees
Production
The Phase 1 concentrator has a milling capacity of 770,000 tonnes per annum (ktpa).
Processing
The Phase 1 concentrator has a milling capacity of 770,000 tonnes per annum (ktpa). The concentrator is expected to reach 80% of its capacity by mid-2026. The first concentrate produced is a blend of copper, gold, palladium, platinum, nickel, and rhodium.
Equipment
The mine utilises mechanised, bulk mining methods such as long-hole stoping and drift-and-fill. Key infrastructure includes Shaft 1 for initial production, Shaft 2 which is being expanded, and Shaft 3 which is expected to be operational by April 2026. The commissioning of Shaft 3 will increase the mine's hoisting capacity five-fold to 5 million tonnes per annum. A 5-megawatt solar power facility was completed in the first quarter of 2025 to support operations.
Expansion
The Platreef Project is being developed in multiple phases. Phase 1 commenced production in late 2025. Phase 2 expansion is underway and targeted for completion in the fourth quarter of 2027. This will increase processing capacity to 4.1 million tonnes per annum (Mtpa) and is expected to increase annual production to approximately 450,000-460,000 ounces of platinum, palladium, rhodium and gold (3PE+Au), plus around 9,000 tonnes of nickel and 6,000 tonnes of copper. A future Phase 3 expansion is planned, which would further increase processing capacity to 10.7 Mtpa and more than double production to over 1 million ounces of 3PE+Au, approximately 22,000 tonnes of nickel and 13,000 tonnes of copper annually.
Power sources
Solar
Companies & ownership
  • JGC Holdings Corporation
  • Ivanhoe Mines Ltd.
    TSX:IVN · OTC:IVPAF
  • ITOCHU Corporation
  • Japan Organization for Metals and Energy Security
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Aurora

Nevada, United States · Underground

Care And Maintenance
GoldSilver
Overview
The Aurora mine in Nevada is owned and operated by Hecla Mining Company. Currently, the Nevada Operations, which include Aurora, are on care and maintenance, with a shift towards active exploration. The Aurora district has a history of high-grade production, having previously produced 1.9 million ounces of gold and 20 million ounces of silver. Historic underground grades averaged 2.24 ounces of gold per ton. Existing infrastructure at the site includes a 600-ton-per-day mill. Hecla has been consolidating land positions and compiling historical data to define new exploration targets.
Production
Previously produced 1.9 million ounces of gold and 20 million ounces of silver. Historic underground grades averaged 2.24 ounces of gold per ton. No recent production data as the mine has been on care and maintenance.
Processing
600-ton-per-day mill
Expansion
In late 2025, Hecla Mining's subsidiary, Klondex Aurora Mine Inc., received a Finding of No Significant Impact and a Decision Notice from the U.S. Forest Service for the Polaris Exploration Project at the Aurora site. This approval allows for an exploration program to commence in 2026. The planned exploration will involve drilling to test multiple high-grade epithermal vein systems, including near-surface targets (Martinez, Juniata, Ann) and deeper systems (Brawley Peak, Sawtooth Ridge, Polaris).
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Platreef PGM-Nickel Mine

Limpopo Province, South Africa · Underground

Operating
PalladiumPlatinumNickelCopperRhodiumGold
Opened
2025-11-18
Capex (est.)
USD 252.00M
Workforce
More than 2,000 employees (2025)
Overview
Platreef PGM-Nickel Mine is an underground mine in Limpopo Province, South Africa, operated by Ivanhoe Mines. It commenced production in Q4 2025 and is undergoing a multi-phase expansion to significantly increase output of palladium, platinum, nickel, copper, rhodium, and gold.
Production
The mine officially opened and produced its first concentrate on November 18, 2025. The Phase 1 concentrator began by processing lower-grade development ore and is set to transition to higher-grade production ore in the second quarter of 2026. The first sale of concentrate was made to Northam Platinum in late Q4 2025.
Processing
The Phase 1 concentrator has a milling capacity of 770,000 tonnes per annum (ktpa). The total combined processing capacity of the Phase 1 and 2 concentrators will be 4.1 million tonnes per annum (mtpa). The Phase 3 expansion targets a processing capacity of 10.7 mtpa. The processing method involves crushing, milling, and flotation circuits.
Equipment
The mine utilises shaft access for underground mining. Shaft #1 has an annual hoisting capacity of 2.5 million tonnes. Shaft #3 is scheduled to be operational by April 2026, which will increase the mine's hoisting capacity five-fold to 5 million tonnes per annum. Work on widening Shaft #2 is expected to commence in April 2026. The mining methods are long-hole stoping and drift-and-fill, which are mechanised bulk mining approaches.
Expansion
The mine is being developed in three phases. Phase 1 commenced production in Q4 2025 and is expected to produce approximately 100,000 ounces of 3PE+Au plus nickel and copper once fully ramped up. Phase 2 expansion is underway, with completion targeted for Q4 2027, increasing annual production to approximately 450,000-460,000 ounces of 3PE+Au, plus over 30 million pounds (approximately 13,600 tonnes) of nickel and copper combined. A future Phase 3 expansion, outlined in a 2025 Preliminary Economic Assessment, would further increase annual production to over 1 million ounces of 3PE+Au, plus approximately 22,000 tonnes of nickel and 13,000 tonnes of copper.
Power sources
Solar
Companies & ownership
  • Ivanhoe Mines Ltd.
    TSX:IVN · OTC:IVPAF
  • ITOCHU Corporation
  • Japan Organization for Metals and Energy Security
  • JGC Holdings Corporation
  • Broad-based Black Economic Empowerment (B-BBEE) structure
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Monte Cristo

Nevada, United States · Open Pit

Under Development
GoldSilver
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Hollister

Nevada, United States · Underground

Care And Maintenance
GoldSilver
Overview
The Hollister mine, located in Elko County, Nevada, is an underground gold and silver mine currently under care and maintenance. Hecla Mining Company acquired the mine in July 2018, and production was suspended in the third quarter of 2019. The property is part of Hecla's Nevada Operations. The potential restart of operations at Hollister is under evaluation, with an estimated timeline of approximately five years, pending further exploration, investment, and permitting.
Processing
No on-site processing facility at Hollister. The operational plan prior to suspension involved hauling mined ore to the nearby Midas mill for processing.
Expansion
Hecla Mining is actively exploring the area, with a focus on the Hatter Graben deposit, which is located near the historical Hollister mine workings. Future development of the Hatter Graben or other expansions will require state and federal approvals for waste rock and water management.
Companies & ownership
  • Hecla Mining Company
    NYSE:HL
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Page 4 of 59 (1393 total)