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Minesites Directory

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Page 94 of 147 (3508 total)
East Boulder Mine

Montana, United States · Underground

Operating
PalladiumPlatinum
Opened
2002-01-01
End year
2059
Workforce
Combined US PGM operations (Stillwater and East Boulder mines) had 911 employees and contractors as of 31 December 2024. Expected workforce of approximately 600 workers at full operation (2001 regulatory document).
Overview
The East Boulder Mine is an active underground mining operation owned by Sibanye-Stillwater Limited, through its wholly-owned subsidiary Stillwater Mining Company. Located in Sweet Grass County, Montana, near McLeod and Big Timber, it targets the J-M Reef, the world's highest-grade PGM deposit, extracting palladium and platinum.
Production
Combined production for US PGM operations (Stillwater and East Boulder) was 425,842 ounces of 2E PGM for the year ended 31 December 2024. East Boulder operation produces approximately 230,000 ounces per year (2020 data).
Processing
Milling and treating ore at an integrated concentrator complex via crushing, grinding, and flotation to produce a sulphide concentrate. Concentrate is then transported to Sibanye-Stillwater's Columbus Metallurgical Complex for smelting and refining.
Equipment
hydraulic drill jumbos, Load-Haul-Dump (LHD) vehicles, underground crushing station with a capacity of 5,443 tonnes per day
Companies & ownership
  • Sibanye-Stillwater Limited
    NYSE:SBSW
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Stillwater Mine

Montana, United States · Underground

Operating
PalladiumPlatinumGoldSilverCopperNickel
Opened
1986-01-01
End year
2049
Workforce
As of 31 December 2024, the US PGM operations, which include the Stillwater and East Boulder mines, had a combined workforce of 911 employees and contractors. A September 2024 announcement indicated a significant restructuring of the US PGM operations, including a reduction of approximately 700 employees.
Overview
The Stillwater Mine is an underground mining operation located near the town of Nye in Stillwater County, Montana, in the United States. It targets the J-M Reef, a significant source of platinum group metals (PGMs) in the United States.
Production
For the year 2023, the Stillwater mine was expected to produce between 260-300 thousand ounces of 2E PGM (platinum and palladium) in concentrate. The production target for the entire US PGM operations as of 31 December 2024, is 425,842 ounces of 2E PGM.
Processing
Ore processing occurs on-site at a concentrator plant. The process involves milling and treating the ore to produce a concentrate. This concentrate is then transported to the company's Columbus Metallurgical Complex in Columbus, Montana, for smelting and refining into a PGM-rich filter cake.
Equipment
underground mining fleet, concentrator plant, new concentrate handling system, new processing facility, workshops, warehouse, change facilities, headframe, hoist house, sand and paste plants, water treatment and storage facilities, offices
Expansion
new concentrate handling system added in 2021 and the balance of a new processing facility commissioned in 2023. Stillwater West section temporarily suspended in 2024 due to restructuring. September 2024 announcement indicated a significant restructuring of the US PGM operations, including a reduction of approximately 700 employees.
Companies & ownership
  • Sibanye-Stillwater Limited
    NYSE:SBSW
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Castle Mountain Mine

California, United States · Open Pit

Under Development
GoldSilver
Mine life
14 years
Workforce
over 400 jobs during construction and operations (Phase 2)
Overview
Castle Mountain Mine, owned and operated by Equinox Gold Corp., is an open-pit gold and silver mine in San Bernardino County, California, United States. Mining operations are currently suspended for Phase 2 permitting, with residual leaching and gold production from Phase 1 continuing through H1 2025. The company is advancing permitting and engineering for an expansion.
Production
Phase 1 expected annual production of 30,000 to 40,000 ounces of gold. The Phase 2 expansion is projected to increase average annual production to 218,000 ounces.
Processing
The processing method for Phase 1 is a run-of-mine heap leach operation. The planned Phase 2 expansion will add a milling and leach/carbon-in-leach (CIL) plant for higher-grade ore, alongside an expanded heap leach facility. The Phase 2 processing infrastructure will include a two-stage crushing facility, conveyors, a ball mill circuit, gravity concentration, and leach and CIL tanks. Loaded carbon from the current operations is processed at Equinox Gold's Mesquite Mine, located 200 miles south.
Equipment
Two Terex RH340 hydraulic shovels. Two Cat 994H front-end loaders and a backup LeTourneau L1350 front-end loader. Sixteen Terex MT3700 (205-ton) and six Caterpillar 789D (200-ton) haul trucks. Additional support equipment such as track and rubber-tired dozers, and graders.
Expansion
The proposed Phase 2 expansion is expected to create over 400 jobs during construction and operations. The planned Phase 2 expansion will add a milling and leach/carbon-in-leach (CIL) plant for higher-grade ore, alongside an expanded heap leach facility. The Phase 2 processing infrastructure will include a two-stage crushing facility, conveyors, a ball mill circuit, gravity concentration, and leach and CIL tanks. The federal permitting process for the Phase 2 expansion is anticipated to be completed in December 2026.
Companies & ownership
  • Equinox Gold Corp.
    TSX:EQX · NYSE:EQX
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Los Filos Mine

Guerrero, Mexico · Open Pit

Operating
Gold
Overview
Operations suspended indefinitely on April 1, 2025.
Expansion
Los Filos Expansion project
Companies & ownership
  • Equinox Gold Corp.
    TSX:EQX · NYSE:EQX
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Mesquite Mine

California, United States · Open Pit

Operating
Gold
End year
2028
Mine life
3.25 years
Workforce
approximately 300 people, with more than a quarter of the team having worked at the mine for over 10 years as of July 2022.
Overview
Equinox Gold Corp. operates the Mesquite Mine in Imperial County, California, United States. The property is located at approximately Latitude 33° 03' North and Longitude 114° 59' West. The mine is a primary gold producer. It is an open-pit, run-of-mine heap leach operation and is currently active. Equinox Gold holds a 100% interest in the mine through its wholly-owned subsidiary, Western Mesquite Mines, Inc.
Production
85,998 ounces of gold in 2025 (actual), 71,984 ounces in 2024 (actual), 87,753 ounces in 2023 (actual), 123,965 ounces in 2022 (actual), 137,467 ounces in 2021 (actual), and 141,270 ounces in 2020 (actual). The production guidance for 2026 is between 70,000 and 80,000 ounces of gold. Since its commencement in 1986, the mine has produced over five million ounces of gold.
Processing
Processing method involves hauling run-of-mine ore directly to heap leach pads. Gold is recovered from the pregnant solution using a standard carbon-in-column circuit, followed by desorption, recovery circuits, and a refinery. The gold and silver concentrate is heated in an induction furnace to produce gold/silver doré, which is then shipped off-site for further refining. The processing facilities include seven active heap leach pads, process ponds, a carbon-in-column plant, and a gold plant. The gold plant at Mesquite also processes carbon from Equinox Gold's Castle Mountain Mine. Gold recovery rates average approximately 75% for oxide ore and 35% for non-oxide ore, with a 90-day leach cycle.
Equipment
conventional truck and shovel open-pit methods, owner-operated, mobile equipment fleet includes Cat 793F and 789D trucks and loaders.
Expansion
The company acquired the mine from New Gold Inc. on 30 October 2018.
Companies & ownership
  • Equinox Gold Corp.
    TSX:EQX · NYSE:EQX
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Greenstone Mine

Ontario, Canada · Open Pit

Operating
Gold
Opened
2024-01-01
End year
2039
Mine life
15 years
Overview
A significant gold-producing asset in Canada, located in Ontario, approximately 275 kilometres northeast of Thunder Bay and about four kilometres south of Geraldton.
Production
Production guidance for 2026 is estimated at 250,000 to 300,000 ounces of gold. For the first five years of operation, production is expected to average over 400,000 ounces of gold annually. The mine produced approximately 59,000 ounces of gold from the first pour up to 30 September 2024.
Processing
A 27,000 tonnes-per-day leach/carbon-in-pulp (CIL) plant. The crushing and grinding circuits have demonstrated the ability to operate at the full production rate.
Equipment
25 CAT 793 haul trucks, two Epiroc D65 drills, six Epiroc Pit Viper 235 drills, four Komatsu PC5500 shovels, one Komatsu WE1850 loader, and six Komatsu D375A-8 bulldozers. An additional CAT 6030 excavator and four more CAT 793 haul trucks were expected to be commissioned in early 2025.
Expansion
An additional CAT 6030 excavator and four more CAT 793 haul trucks were expected to be commissioned in early 2025.
Companies & ownership
  • Equinox Gold Corp.
    TSX:EQX · NYSE:EQX
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PT Baramulti Suksessarana (BSSR)

East Kalimantan, Indonesia · Open Pit

Operating
Coal
Companies & ownership
  • PT Baramulti Suksessarana Tbk
    ASX:BSSR
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PT Antang Gunung Meratus (AGM)

South Kalimantan, Indonesia · Open Pit

Operating
Coal
Opened
1999-01-01
End year
2029
Workforce
718 employees (for PT Baramulti Suksessarana Tbk and PT Antang Gunung Meratus as of 31 March 2025)
Overview
Operating open-cut coal mine in South Kalimantan, Indonesia, with a concession area of 22,433 hectares across Banjar, Tapin, Hulu Sungai Selatan, and Hulu Sungai Tengah regencies. Operates under a 2nd generation Coal Contract of Work (CCOW) valid until 2029.
Production
2022 approved production target of 20 million tonnes per annum (proposed to be revised to 12.5 million tonnes).
Equipment
PC-1250SP-8R backhoe loader, HD 465-7R haul trucks, RFIDLongHaul system, weighbridges, stockpiles, hauling roads, canal
Companies & ownership
  • PT Baramulti Suksessarana Tbk
    ASX:BSSR
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Gosselin Zone

Ontario, Canada · Open Pit

Feasibility
GoldCopper
Workforce
over 600 full-time workers
Overview
The Gosselin Zone is a gold deposit located in the Chester and Yeo Townships, District of Sudbury, in northeastern Ontario, Canada. It is situated approximately 25 kilometres southwest of Gogama, 125 kilometres southwest of Timmins, and 175 kilometres northwest of Sudbury. It is part of the Côté Gold Project, a joint venture between IAMGOLD Corporation (70%) and Sumitomo Metal Mining Co., Ltd. (30%).
Processing
Ore from the Gosselin Zone is expected to be processed using the same facilities as the Côté Gold Mine. The processing plant at Côté Gold has a nameplate capacity of 36,000 tonnes per day. The plant is equipped with Canada's largest high-pressure grinding roller (HPGR) and the market's largest vertical grinding mills. The processes are described as automated and modern.
Equipment
The mining fleet at Côté Gold is technologically advanced, featuring autonomous haul trucks and drills. The fleet includes 23 CAT 793F autonomous haul trucks and six Epiroc Pit Viper autonomous drills.
Expansion
The inclusion of the Gosselin Zone is anticipated to enhance the long-term value and district-scale potential of the Côté Gold Project.
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Chevrier

Quebec, Canada · Open Pit

Under Development
Gold
Overview
Project Chevrier is a gold project located in the Chibougamau region of Quebec, Canada. It is part of IAMGOLD Corporation's Nelligan Mining Complex. The project is currently in a pre-production stage with a conceptual vision for a central processing facility.
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Philibert

Quebec, Canada · Open Pit

Under Development
Gold
Overview
The Philibert project is a pre-production asset located in the Chibougamau district of Quebec, Canada, approximately 60 kilometres southwest of Chibougamau. It is part of the Nelligan Mining Complex and is considered to be in the resource development and exploration stage. A 2023 NI 43-101 report detailed a pit-constrained mineral resource estimate, suggesting a potential bulk tonnage, open-pit mine type. Initial metallurgical tests indicated recovery rates of 93-95%.
Expansion
IAMGOLD's exploration program is focused on expanding the mineralized footprint of the Philibert and Nelligan projects.
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Nelligan

Quebec, Canada · Open Pit

Under Development
Gold
Overview
The Nelligan project is a large-scale, advanced exploration-stage gold project located in the Nord-du-Québec region of Québec, Canada.
Processing
Sulphide flotation circuit, followed by cyanidation and carbon-in-leach, including cyanide leaching of flotation tailings.
Equipment
diamond drilling, NQ size core, Reflex ACT III System
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Grand Duc open pit

Quebec, Canada · Open Pit

Operating
Gold
End year
2027
Overview
Grand Duc open pit is part of the Westwood Complex, wholly owned by IAMGOLD Corporation, located in the Doyon-Bousquet-LaRonde gold mining camp in Quebec, Canada. It is an open-pit gold mining operation that commenced in October 2019.
Production
In 2024, 662,000 tonnes of ore were mined from the open pit with a head grade of 1.60 g/t. For 2026, the mill throughput for the Westwood complex is expected to average 1.2 million tonnes with a blended head grade of 3.44 g/t.
Processing
Ore is processed at the Doyon process plant, which utilises a conventional cyanidation process. The mill has a capacity of 1.0 million tonnes per year and achieves average recoveries of 95%.
Expansion
An evaluation for a potential second phase extension of the pit is underway.
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Tomahawk

South Australia, Australia · Open Pit

Under Development
Iron Ore (Magnetite)
Workforce
Projected 350-750 people
Overview
Project Tomahawk is a magnetite prospect located in the Mt Woods Inlier region, approximately 25 kilometres southeast of the Cairn Hill mine, near Coober Pedy. It is owned by Cu-River Mining Australia Pty Ltd and is part of Cu-River's pipeline of future projects. Development plans were halted in 2019.
Processing
magnetic separation
Companies & ownership
  • Cu-River Mining Australia Pty Ltd
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Snaefell

South Australia, Australia · Open Pit

Under Development
Iron Ore (Magnetite)
Overview
The project is focused on magnetite iron ore. It has a JORC resource of 569 million tonnes at 27.1% iron (Fe), using an 18% Fe cut-off. It is described as a magnetite skarn/replacement style deposit.
Expansion
The development of the Snaefell and Tomahawk magnetite targets was mentioned as part of a planned expansion of the nearby Cairn Hill mine in 2017.
Companies & ownership
  • Cu-River Mining Australia Pty Ltd
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Westwood Gold Mine

Quebec, Canada · Underground

Operating
GoldSilver
End year
2032
Workforce
nearly 750 employees and contractors
Overview
The Westwood Complex is an active operation combining both underground and open-pit mining methods. It includes the Westwood underground mine and the Grand Duc open pit.
Production
Plant capacity of 1.0 million tonnes per year; 113,900 ounces of gold in 2025; 110,000 to 130,000 ounces expected in 2026; 134,000 ounces of gold in 2023; total 882,388 ounces of gold as of July 2024
Processing
Doyon processing plant, conventional cyanidation process, single-stage primary crusher, semi-autogenous grinding (SAG) mill and ball mill circuit, gravity circuit, pre-leach, carbon-in-leach (CIL) and carbon-in-pulp (CIP) circuits to produce gold/silver doré
Equipment
conventional underground equipment, Westwood shaft, Warrenmac ramp, conventional drill, blast, load, and haul method with a contractor-operated fleet
Expansion
continued renewal of the mobile fleet and fixed equipment
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Essakane Gold Mine

Sahel region, Burkina Faso · Open Pit

Operating
Gold
End year
2028
Workforce
Nearly 2,500 employees (as of 2020), with 97% being nationals of Burkina Faso.
Overview
The Essakane Gold Mine is located in north-eastern Burkina Faso, approximately 330 kilometres north-east of the capital, Ouagadougou. It is situated at the boundary of the Oudalan and Séno provinces in the Sahel region. The primary commodity is gold. Essakane is an active, in-production open-pit mine.
Production
For the full year 2024, Essakane's attributable gold production was 409,000 ounces, with a total production of 454,000 ounces on a 100% basis. In 2025, the mine produced 117,300 attributable ounces in the fourth quarter, contributing to a full-year attributable total of 372,100 ounces.
Processing
Conventional Crush-Grind-Carbon-in-Leach (CIL) system. Ore undergoes two stages of crushing, semi-autogenous grinding (SAG), ball mill grinding, and pebble crusher grinding, followed by gravity concentration and the CIL circuit. The processing plant has a throughput capacity of 13.05 million tonnes per annum, achieved by blending softer saprolite and transition ore with hard rock. The mine's power is supplied by Africa's largest engine-solar PV hybrid power plant, which includes a 55 MW heavy fuel oil plant and a 15 MWp solar facility.
Equipment
Shovels: Two Komatsu PC3000 and two Terex RH120. Excavators: Two Komatsu PC2000. Loaders: Five Caterpillar 993 wheel loaders. Haul Trucks: Thirty-four Caterpillar 785 haul trucks and five Caterpillar 777 haul trucks. Drills: Two Atlas Copco Epiroc L8 drill rigs are used for presplitting. Ancillary and Support: The fleet is supported by four CAT 777 water trucks, plus fuel trucks, mobile light plants, and service vehicles.
Expansion
A major plant expansion to handle increased hard rock processing was completed in 2013.
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Gosselin Zone (at Côté Gold)

Ontario, Canada · Open Pit

Under Development
Gold
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Fayolle Project

Quebec, Canada · Open Pit

Closed
Gold
Opened
2023-01-01
End year
2024
Overview
Fayolle Project is a satellite deposit of the Westwood Complex, located in the Abitibi region of Quebec, Canada, approximately 35 kilometres northeast of Rouyn-Noranda. The project is 100% owned by IAMGOLD Corporation.
Production
10,000 and 15,000 ounces of gold (2023 guidance)
Processing
conventional single-stage primary crusher, two-stage SAG mill and ball mill grinding circuit, gravity circuit, pre-leach, CIL and CIP circuits
Equipment
truck and shovel/loader
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Boto Gold Project

Kedougou region, Senegal · Open Pit

Under Development
Gold
Mine life
11.5 years
Workforce
over 2,500 workers during peak construction; expected to create more than 1,500 direct and indirect jobs in full operation
Overview
The Boto Gold Project is located in the Kedougou region of eastern Senegal, near the borders with Mali and Guinea. The commodity produced is gold. The project was previously owned by Canadian mining company IAMGOLD Corporation, which held a 90% interest with the Government of Senegal holding the remaining 10%. In December 2022, IAMGOLD announced an agreement to sell its 90% interest to Managem. The project is now operated by Managem.
Production
average annual production of 160,000 ounces of gold over its first three years of operation; total mineral reserves estimated at 1.8 million ounces
Processing
primary crushing, grinding, gravity concentration, cyanide leaching, gold recovery using carbon-in-pulp, stripping, and electrowinning, Semi-Autogenous Grinding (SAG) and Ball Mill Combination (SABC) with a capacity of 2.75 million tonnes per annum
Equipment
23 MW power plant, water dam, tailings storage facility, fuel depot, accommodation camp, airstrip, road network, six Wärtsilä 32 engines, four high-speed diesel generators
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Anik Project

Quebec, Canada · Open Pit

Under Development
Gold
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Monster Lake Project

Quebec, Canada · Underground

Under Development
Gold
Overview
The Monster Lake Project is an exploration-stage, high-grade underground gold project. The mineralisation is associated with a significant deformation corridor and gold-bearing structures within the Archean volcanic rocks of the Obatogamau Formation.
Production
Indicated resources of 239,000 tonnes averaging 11.0 grams per tonne of gold and inferred resources of 1,053,000 tonnes averaging 14.4 grams per tonne of gold as of October 2024.
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Nelligan Mining Complex

Québec, Canada · Open Pit

Under Development
Gold
Overview
The Nelligan project is a large-scale, open-pit gold exploration project located in the Nord-du-Québec region of Québec, Canada. It is situated approximately 60 kilometres southwest of Chibougamau and 45 kilometres south of Chapais. The project is fully owned and operated by IAMGOLD Corporation. The company has consolidated its land position in the Chibougamau district, combining the Nelligan project with the nearby Monster Lake, Philibert, Chevrier, and Croteau projects to form the Nelligan Mining Complex.
Processing
Preliminary metallurgical test work suggests a processing flowsheet incorporating flotation with regrinding could improve gold recovery compared to direct cyanidation of the whole ore. One study indicated a sulphide flotation circuit followed by cyanidation and carbon-in-leach could yield a gold recovery of about 92%. An optimal flow sheet has not yet been selected.
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Westwood Gold Mine (including the Grand Duc open pit)

Quebec, Canada · Underground

Operating
Gold
Companies & ownership
  • IAMGOLD Corporation
    TSX:IMG · NYSE:IAG
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Page 94 of 147 (3508 total)