This selection of mining companies in the United States comprises mostly large, established firms. Alcoa, founded in 1888, is a global leader in bauxite, alumina, and aluminum products. Freeport-McMoRan, established in 1834, is an international mining company with significant reserves of copper, gold, and molybdenum. The Mosaic Company, founded in 2004, specializes in crop nutrients, while Komatsu Mining, founded in 2017, develops technologies and equipment for various markets.
The companies listed are diverse in their specific offerings within the mining sector. Many, such as AngloGold Ashanti and Newmont Corporation, focus on precious metals like gold. Others, like Vulcan Materials Company and Martin Marietta, are significant producers of construction materials. A notable pattern is the presence of several companies headquartered in Denver, Colorado, including AngloGold Ashanti, Newmont Corporation, and Goldcorp.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 17,780 | ||||
| 2 |
AngloGold Ashantianglogoldashanti.com
global gold mining company with operations, projects, and exploration across multiple countries, focusing on value-creating mineral opportunities |
14,393 | |||
| 3 |
Newmont Corporationnewmont.com
A leading producer of gold, copper, silver, zinc, and lead with assets in North America, South America, Australia, and Africa Industry leader in value creation and responsible practices |
12,597 | |||
| 4 |
Freeport-McMoRanjobs.fcx.com
International mining company with headquarters in Phoenix, Arizona, operating assets with significant reserves of copper, gold, and molybdenum worldwide Commitment to safety, environment, and local communities |
9,855 | |||
| 5 |
Weir Mineralsglobal.weir
The company provides engineered solutions to the mining industry, offering services from reducing downtime to increasing plant capacity and tailings management |
8,746 | |||
| 6 |
Komatsu Miningkomatsu.com
Development and supply of technologies, equipment, and services for construction, mining, industrial, forestry, and forklift markets worldwide. |
5,339 | |||
| 7 |
The Mosaic Companymosaicco.com
Global leader in crop nutrient industry, producing and delivering phosphate and potash on large scale Engaged in all phases of crop nutrition worldwide |
4,952 | |||
| 8 |
Vulcan Materials Companyvulcanmaterials.com
The company is a leading producer of construction materials, specializing in crushed stone, sand, gravel, asphalt, and ready-mixed concrete Operating in multiple states |
4,780 | |||
| 9 |
Martin Mariettamartinmarietta.com
A leading supplier of building materials, providing aggregates, cement, concrete, and asphalt products across North America and The Bahamas |
4,451 | |||
| 10 |
Goldcorpnewmont.com
Leading global gold producer with diversified metals portfolio, operating in multiple continents, emphasizing safety, governance, and value creation. |
4,106 | |||
| 11 |
Boart Longyearboartlongyear.com
A global leader in drilling services, equipment manufacturing, technology development, and fostering diversity and inclusion, with operations in 26 countries |
3,818 | |||
| 12 |
Peabody Energypeabodyenergy.com
Leading coal producer supplying essential materials for affordable energy generation and steel manufacturing with a strong focus on sustainability. |
3,106 | |||
| 13 |
Nevada Gold Minesbarrick.com
A joint venture combining assets in Nevada to create the world's largest gold-producing complex, focused on operational improvements and cost savings |
2,907 | |||
| 14 |
ESCO Group LLCglobal.weir
Developer and manufacturer of engineered wear parts and replacement products for mining, construction, and industrial applications with global support. |
2,055 | |||
| 15 |
Aura Minerals Incauraminerals.com
Finds, mines, and supplies gold, copper, and other essential minerals, operating across the Americas with a focus on people, environment, and ethics. |
2,023 | |||
| 16 |
Waupaca Foundrywaupacafoundry.com
The company is a leading producer of high-quality iron castings, utilizing vertical green sand molding and generations of expertise for durable and innovative products |
1,534 | |||
| 17 |
Coeur Mining, Inc.coeur.com
Precious metals producer with mines in North America, focusing on responsible mining while prioritizing employee safety, environmental protection, and community engagement through teamwork and innovation |
1,465 | |||
| 18 |
MACAmaca.net.au
Specialises in mining, crushing, civil construction, infrastructure, and mineral processing with over 20 years of experience in Australia and internationally. |
1,329 | |||
| 19 |
SSR Mining Inc.ssrmining.com
A leading gold company with producing assets in USA, T眉rkiye, Canada, and Argentina, focused on creating value through exploration and development |
1,281 | |||
| 20 |
PT Bayan Resources Tbkbayan.com.sg
Integrated coal producer in Indonesia operating mines, terminals, and transfer stations Specializes in mining and producing various coal qualities |
1,264 | |||
| 21 |
Coviacoviacorp.com
A leading provider of minerals and material solutions for Industrial and Energy markets, offering high-quality products, technical capabilities, and extensive distribution network |
1,251 | |||
| 22 |
Noranda Aluminummarketcap.company
A leading North American company producing value-added primary aluminum products and rolled aluminum coils with operations in smelting, refining, and rolling mills |
1,246 | |||
| 23 |
Alerisaleris.com
A global leader in aluminum rolled products serving major customers in aerospace, building, containers, transportation industries with advanced manufacturing capabilities |
1,235 | |||
| 24 |
Compass Mineralscompassminerals.com
Global provider of essential minerals for various applications, including winter safety, agriculture, and fire retardation, with operations in the US, Canada, and the UK |
1,158 | |||
| 25 |
TMS International LLCtmsinternational.com
A global leader in providing on-site steel mill services, focused on safety, innovation, environmental protection, and creating value for customers through expertise and unrivaled service |
1,146 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 26 |
CONSOL Energycorenaturalresources.com
A producer and exporter of high-quality bituminous thermal and metallurgical coal with productive longwall mining operations in the Northern Appalachian Basin |
1,142 | |||
| 27 |
Arch Resources, Inccorenaturalresources.com
Producer and exporter of metallurgical and thermal coals, operating multiple mines and marine export terminals focused on seaborne markets. |
1,136 | |||
| 28 |
Rogers Group Inc.rogersgroupincint.com
A 115-year-old aggregates and asphalt highway construction company operating in 10 states, employing 3,000 people, and recognized as the largest privately held aggregate producer in the US |
1,121 | |||
| 29 |
Austin Powderaustinpowder.com
The company manufactures industrial explosives, accessories, and offers technical blasting services globally |
1,090 | |||
| 30 |
Schnitzer Steelradiusrecycling.com
Global leader in steel recycling, with 95 facilities and deep water ports for efficient delivery of scrap metals worldwide Headquarters in Portland, Oregon |
1,058 | |||
| 31 | 1,028 | ||||
| 32 |
Molycopmolycop.com
A global mining solutions provider with a focus on innovative technologies, quality products, industry-leading standards, and sustainability in mining operations worldwide |
991 | |||
| 33 |
ArcelorMittal USAclevelandcliffs.com
Produces flat-rolled carbon steel products for automotive, construction, and appliance markets, utilizing mining and raw materials for integrated steel production. |
928 | |||
| 34 |
OmniSource, LLComnisource.com
A leading metals-recycling company with facilities across North America, processing millions of tons of ferrous and nonferrous metals annually Owned by Steel Dynamics, Inc |
909 | |||
| 35 |
Ecobatecobat.com
Global leader in battery recycling, providing sustainable solutions for essential energy storage needs in a circular economy Powers industries worldwide Offers job opportunities |
863 | |||
| 36 |
A. M. Castle & Co.amcastle.com
Global supplier and processor of specialty metals serving aerospace, defense, industrial, and medical markets with quality and reliability. |
861 | |||
| 37 |
U.S. Silica Companyussilica.com
Global performance materials company specializing in commercial silica for oil and gas and industrial applications, with expertise in mining, processing, and logistics |
838 | |||
| 38 |
Westmoreland Mining LLCwestmoreland.com
A leading coal company in the US with operations in surface mining, char production, and activated carbon plant ownership |
788 | |||
| 39 |
Special Metalsprecast.com
A global leader in high-performance alloy manufacturing, offering solutions to materials challenges through a range of nickel and cobalt alloys worldwide |
780 | |||
| 40 |
HEPI (H-E Parts International)h-eparts.com
Leading global supplier of parts and components to mining, quarry, and construction industries, committed to innovation and providing high-quality, cost-effective solutions |
776 | |||
| 41 |
Minovaminovaglobal.com
Provider of high-quality ground support and geotechnical solutions for mining, tunnelling, and surface ground engineering projects worldwide. |
771 | |||
| 42 |
AM/NS Calvertnorthamerica.arcelormittal.com
A leading steel processing plant in Calvert, AL, specializing in flat-rolled carbon steel products for various industries with cutting-edge production facilities and technologies |
735 | |||
| 43 |
PJpj-inc.com
A pipeline company specializing in slurry transport, EPCM delivery, safety, environmental impact reduction, and prioritizing client needs |
730 | |||
| 44 |
JENNMARjennmar.com
Global leader in ground control technology for mining, tunneling, and civil construction industries, offering a wide range of quality products and services worldwide |
724 | |||
| 45 |
Charter Steelchartersteel.com
Supplier of carbon and alloy special bar quality rod, wire, and bar products with high recycled content and advanced processing. |
712 | |||
| 46 |
Buzzi Unicem USAbuzziunicemusa.com
A leading US cement manufacturer with 8 plants and 35 terminals, supplying cement to over 3,800 companies across 20 states |
709 | |||
| 47 |
Century Aluminumcenturyaluminum.com
Primary aluminum production with operations in the US and Iceland, plus carbon anode manufacturing and alumina mining and refining. |
695 | |||
| 48 |
REMA TIP TOPrematiptop.com
A company based in Utah specializing in products and services related to tire repair and maintenance |
690 | |||
| 49 |
Sibanye Stillwatersibanyestillwater.com
This company operates mines in Montana to extract and process platinum group metals, primarily producing palladium and platinum, with a focus on sustainability and recycling |
688 | |||
| 50 |
Drummond Company, Inc.drummondco.com
The company prioritizes employee well-being, customer satisfaction, community support, and environmental sustainability in all of its projects worldwide |
686 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
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