| # | Company | Employees |
|---|---|---|
| 1 | 71,933 | |
| 2 |
Gerdaugerdau.com.br
A leading steel producer in the Americas, specializing in long and special steel, with operations in nine countries and a focus on sustainability |
23,208 |
| 3 |
CSN - Companhia Siderúrgica Nacionalcsn.com.br
One of the most efficient integrated steel complexes globally, operating in five key sectors: steelmaking, mining, logistics, cement, and energy |
20,603 |
| 4 |
ArcelorMittal Brasilbrasil.arcelormittal.com
Global producer of long and flat steel solutions serving automotive, construction, and appliance industries through industrial plants and iron ore mining operations. |
12,262 |
| 5 |
USIMINASusiminas.com
Leading South American steel manufacturer with a focus on excellence in flat steel production, social responsibility, and continuous evolution since 1962 |
10,710 |
| 6 |
Nexa Resourcesnexaresources.com
Global mining company within Votorantim, producing non-ferrous metals that contribute to society's daily life, with shares traded on NYSE and TSX |
7,091 |
| 7 |
CBA | Companhia Brasileira de Alumíniocba.com.br
Specializing in sustainable production, we mine bauxite, manufacture aluminum products, and lead in recycling, connecting individuals with the versatility of aluminum in everyday life |
5,190 |
| 8 |
Samarcosamarco.com
A company founded in 1977 that produces iron ore pellets for the steel industry, operating in 19 countries and committed to environmental and social responsibility |
3,573 |
| 9 |
Fagundes Construção e Mineraçãofagundes.com
A leading provider of construction and mining services with headquarters in Portão-RS and branches in Butiá-RS, Catalão-GO, and Araxá-MG since 1985 |
3,167 |
| 10 |
AngloGold Ashanti Brasilanglogoldashanti.com.br
Leading gold producer in Brazil with nearly two centuries of operation, focusing on innovation, safety, and sustainable practices across its mining, energy, and real estate sectors. |
2,902 |
| 11 |
ArcelorMittal Aços Planosbrasil.arcelormittal.com
Manufacturing flat steel products while focusing on employee welfare and environmental preservation through sustainable industrial practices and dedicated social responsibility initiatives. |
2,737 |
| 12 |
U&M Mineração e Construção S/Auem.com.br
A company focused on safety, environmental harmony, and community involvement Achieved certifications in quality, environmental, and occupational health management Recognized for employee participation and excellence |
2,238 |
| 13 |
Grupo Aço Cearensegrupoacocearense.com.br
A prominent player in the Brazilian steel market with 40 years of experience, serving 16,000 clients nationwide with a capacity of 1,000,000 tons/year |
2,193 |
| 14 |
CMOC Brasilcmocbrasil.com
A mining industry specializing in niobium and phosphates, essential minerals for global industry and Brazilian agriculture Prioritizing safety, sustainability, and community well-being |
2,117 |
| 15 |
Companhia de Ferro Ligas da Bahia - FERBASAferbasa.com.br
A leading company founded in 1961 in Brazil, specializing in mining, metallurgy, and forest resources, known for high-quality products and strong environmental commitment |
2,009 |
| 16 |
EroBrasilerobrasil.com
A Brazilian group with global technology and Canadian expertise, operating in the regions of Caraíba, Tucumã, and Xavantina for over half a century |
1,989 |
| 17 |
GRUPO SIMECgruposimec.com.br
The group operates in the steel industry, with operations in Mexico, Canada, USA, and Brazil, producing 6 million tons of special steels annually |
1,894 |
| 18 |
Geosol Geologia e Sondagens S.A.geosol.com.br
A world-leading geology company specializing in geological drilling and mineral engineering programs, with a strong focus on iron ore drilling Established in 1953 |
1,852 |
| 19 |
ArcelorMittal Long Carbon LATAMbrasil.arcelormittal.com
Leading Brazilian manufacturer of long and drawn steels providing comprehensive product portfolios for civil construction, industrial applications and diverse agribusiness sector needs. |
1,794 |
| 20 |
Mineração Tabocamtaboca.com.br
A Peruvian mining company with operations in the Amazon region and São Paulo, specializing in tin extraction, processing, and metallurgy |
1,772 |
| 21 |
Mineração Rio do Nortemrn.com.br
The company is the largest producer of bauxite in Brazil, focusing on environmentally sustainable practices and promoting local socioeconomic development |
1,735 |
| 22 |
Villares Metalsvillaresmetals.com.br
With over 75 years of history, the company is a global leader in developing high-quality special steels and alloys for various industries worldwide |
1,664 |
| 23 |
Paranapanema S.A.paranapanema.com.br
The company specializes in manufacturing and selling electrolytic copper products, sulfuric acid, precious metals, and copper tubes and connections |
1,605 |
| 24 |
Termomecanicatermomecanica.com.br
A leading Brazilian company in the non-ferrous metals industry, specializing in the transformation of copper and its alloys into various semi-finished and finished products |
1,523 |
| 25 |
Kinross Brasil Mineraçãokinross.com.br
A leading gold producer in Brazil, specializing in mineral exploration, mining, ore processing, and gold sales, with a strong focus on sustainability and community development |
1,502 |
| 26 |
REMA TIP TOP Brasilrttshop.com.br
Specializing in materials processing, corrosion solutions, conveyor belt vulcanization, and automotive tire repair, this multinational offers a wide range of products and services worldwide |
1,421 |
| 27 |
Aperam no Brasilbrasil.aperam.com
Integrated producer of stainless, electrical, and special carbon steels providing sustainable industrial solutions across global offices through innovation and market leading manufacturing. |
1,407 |
| 28 |
Lhg Mininglhgmining.com.br
A newly established mining company focused on sustainable steel production through its high-grade iron and manganese ore mines in Mato Grosso do Sul, Brazil |
1,373 |
| 29 |
Jaguar Mining Inc.jaguarmining.com.br
One of Brazil's largest gold miners operating in MG with a focus on sustainable development and best practices #proudto bejaguar |
1,312 |
| 30 |
AVB - Aço Verde do Brasilavb.com.br
A Brazilian long steel company produces Green Steel with 100% renewable energy, focused on sustainability, innovation, and carbon neutrality, serving all states in Brazil |
1,210 |
| 31 |
Votorantim Siderurgiabrasil.arcelormittal.com
A leading national steel producer with operations in Brazil, Argentina, and Colombia, specializing in long steel products for various industries |
1,029 |
| 32 |
Mirantemiranteengenharia.com.br
A Minas Gerais based engineering company specializing in technological measurement solutions for various industries, offering services including 3D scanning, topography, and aerial mapping |
987 |
| 33 |
Bemisabemisa.com.br
A Brazilian company exploring, developing, and operating mineral assets across the country with a diverse portfolio including iron ore, gold, copper, and more Promotes sustainable mining practices |
913 |
| 34 |
IBAR - Indústrias Brasileiras de Artigos Refratáriosibar.com.br
A Brazilian leader in advanced refractory materials technology, offering services to enhance operational efficiency, optimize investments, reduce costs, and increase productivity across various industries |
898 |
| 35 |
Mineração Usiminasusiminas.com
A supplier of high-quality iron ore nationally and internationally through innovation and technology, focusing on safety, environmental respect, and economic development |
871 |
| 36 |
Vetorialvetorial.com.br
With over 50 years of experience, the Group specializes in mining and steel production, focusing on iron ore, charcoal, and pig iron |
869 |
| 37 |
Metalsidermetalsider.com.br
A non-integrated steel producer that manufactures and sells pig iron directly to various industries like automotive, foundries, and steel mills |
852 |
| 38 |
GHT - Grupo Hidrau Torquegrupoht.com.br
One of the largest inventories of spare parts for heavy equipment in Latin America, offering solutions with tradition, quality, and sustainability |
825 |
| 39 |
Grupo Açotubolinktr.ee
A leading steel industry group focusing on excellence, innovation, and customer satisfaction through a diverse range of products and solutions |
816 |
| 40 |
J. Mendesjmendes.com.br
An integral part of the J Mendes group, the company specializes in the extraction, processing, and sale of high-quality iron ore, contributing to the country's economic growth |
793 |
| 41 |
Lundin Mining - Brasillundinmining.com.br
A Canadian mining company with operations in various countries, producing essential metals responsibly, including a copper-gold mine in Brazil |
789 |
| 42 |
MECBRUN INDUSTRIALmecbrun.com.br
Industrial services provider offering metalworking, machining, fabrication, assembly, equipment rental, and movement services Strong focus on quality, efficiency, and customer satisfaction |
785 |
| 43 |
SINOBRAS - Siderúrgica Norte Brasil S.Agrupoacocearense.com.br
A leading steel producer in the North and Northeast regions of Brazil, specializing in long steel products for the construction industry |
784 |
| 44 |
SINOBRASgrupoacocearense.com.br
A steel producer in northern Brazil, contributing to the region's development by supplying steel for construction projects nationwide |
777 |
| 45 |
GMIN Mina TZbrazauro.com.br
Specializing in mining exploration, the company conducts research and analysis to identify potential mineral deposits for extraction and development |
774 |
| 46 |
Grupo Maringágrupomaringa.com.br
A group specializing in sugar, ethanol, renewable energy, and manganese ferroalloys production, with a focus on quality, safety, and community development |
756 |
| 47 |
InfraBrasil Obras pesadasinfrabrasil.net.br
Offering high-quality products and services since 2001 for the Mining and Heavy Construction sectors, with a large fleet of equipment and machinery rentals available |
750 |
| 48 |
Mineração Caraíba S/Aero.com
A Brazilian company with global roots, focused on technology and research with Canadian expertise, operating in several regions for over half a century |
721 |
| 49 |
ALCAST DO BRASIL S/Aalcast.com.br
A dynamic and innovative organization with technical expertise, commitment to results, and focus on quality, constantly adapting to market trends and customer needs |
712 |
| 50 |
Jacobina Mineração - Pan Americanpanamericansilver.com
A mining company based in Bahia, Brazil, operating five underground gold mines with a focus on sustainability, community respect, and safety |
697 |
| 51 |
Grupo Ferroestegrupoferroeste.com.br
Providing renewable products with superior quality, customer satisfaction, and environmental respect, positioning the brand as one of the most respected in the Brazilian industry |
660 |
| 52 |
NAMISA - Nacional Minérios S.A. - CSN Group
An international mining operation with a focus on iron ore production, utilizing strategic mining and processing facilities in Brazil |
614 |
| 53 |
AMG Brasilamg-br.com
A company with over a century of market presence, producing and globally distributing certified materials crucial for current and future technologies Focused on critical minerals, special materials, and energy production |
605 |
| 54 |
Mercurio Conveyor Beltcorreiasmercurio.com.br
Specializing in conveyor belt solutions for over 76 years, we are a leader in our segment, offering a complete portfolio globally |
594 |
| 55 |
Itaminasitaminas.com.br
An iron ore extraction company utilizing open-pit mining and ore processing to produce various products like Sinter Feed Concentrate, Hematitinha, and Pellet Feed |
591 |
| 56 |
Serabi Mineração SAserabigold.com
Based in the UK, the company specializes in gold mining operations in the Tapajós geological region in northern Brazil |
582 |
| 57 |
SVPM | Mineração Serra Verdesvpm.com.br
Integrated rare earth mining and processing operation in Goiás, Brazil, supplying high value elements crucial for green energy technologies like EVs and wind turbines |
564 |
| 58 |
CEDISA Central de Aço S/Acedisa.com.br
A leading national provider of high-quality steel products and services with ISO 9001 certification, serving customers across Brazil |
556 |
| 59 |
Latasagruporeciclabr.com.br
Processes over 330,000 tons of aluminum annually, supplying automotive, steel, metallurgical, packaging, and consumer goods industries with recycled non-ferrous metals. |
541 |
| 60 |
FORACO Brazilforaco.com.br
Specializes in providing high-quality drilling services to mining and geological research companies, focusing on safety, health, and environmental standards |
541 |
| 61 |
Arim Componentes SAarim.com.br
Specializes in manufacturing components, gas taps, safety valves, and connections in zinc alloy for gas systems appliances and household cookers, providing competitive solutions and services |
540 |
| 62 |
Agência Nacional de Mineração - ANMgov.br
Federal agency managing Brazil's mineral resources sustainably, using regulatory tools for social, environmental, and economic benefit of society |
535 |
| 63 |
Skavaskavaminas.com.br
A nationally renowned provider of mining, excavation, and heavy equipment rental solutions with a focus on ore extraction and earth moving |
526 |
| 64 |
Mineração Vale Verdevale-verde.com
The company is the first in Alagoas to mine basic metals, specifically copper concentrate, through open pit mining |
517 |
| 65 |
OZ Minerals Brazilozminerals.com
Modern global copper mining company headquartered in South Australia, listed on ASX100, focused on value creation and growth strategy. |
479 |
| 66 |
Atlantic Nickelatlanticnickel.com
A company in the nickel mining industry based in Bahia, Brazil, specializing in exploration, mining, processing, and selling nickel concentrate for electric vehicle batteries |
474 |
| 67 |
Mineração Curimbabacurimbaba.com.br
A pioneering mining venture founded in 1940 in Poços de Caldas, Brazil, that specializes in bauxite extraction and potassium rock fertilizer development |
470 |
| 68 |
Ligas de Aluminio S.A. - LIASAliasa.com.br
The company is a leading producer of metallic silicon in Latin America, pioneering the use of charcoal as a reducing agent in production |
465 |
| 69 |
FLAPA - Engenharia e Mineraçãoflapa.com.br
A company specializing in engineering and mining services, including earthworks, civil works, mining operations, equipment rental, crushing, and beneficiation |
448 |
| 70 |
Manetonimanetoni.com.br
A leading distributor of steel for Construction, Agriculture, and Industry, providing cutting/bending services, and urban/rural fencing solutions with a strong focus on quality and customer satisfaction |
447 |
| 71 |
Herculano Mineraçãoherculanomineracao.com.br
Specializing in the extraction, processing, and sale of iron ore products with a focus on environmental education and sustainable practices |
438 |
| 72 |
Cedro Mineraçãocedromineracao.com.br
A specialized mining company focused on extracting, processing, and selling iron ore sustainably, contributing to various economic sectors with environmental respect and community involvement |
430 |
| 73 |
TSL TRANSPORTEStransportestsl.com.br
Engineering and mining solutions provider emphasizing close collaboration with partners and clients to efficiently address specific needs |
426 |
| 74 |
MMXmmx.com.br
Mining company within EBX Group, producing iron ore in Minas Gerais and Mato Grosso do Sul, with a new superport in Rio de Janeiro for exports |
418 |
| 75 |
Ical Indústria de Calcinação Ltda.ical.com.br
Brazilian industry specializing in producing lime for over 60 years Committed to innovation and high-quality products and services, focusing on customer needs |
414 |
| 76 |
Bun/Buntechbuntech.com
A conglomerate with operations in Brazil, Argentina, and Colombia, specializing in bentonite mining and a diversified portfolio of mineral products |
413 |
| 77 |
P.A. Gold Mineração e Metalurgia S.A
A Brazilian mining company focused on pioneering underground mining of narrow veins in a promising mining region, with a high-grade gold and copper deposit |
411 |
| 78 |
Gerdau Açominas S.A.
A mining and metals organization located in Minas Gerais, Brazil, specializing in the production and distribution of steel and related products |
411 |
| 79 |
Dinex Engenharia Mineraldinex.com.br
Founded in 1993, this business operates in various mining sectors, offering engineering studies, rock blasting, geological drilling, labor leasing, and special demolitions |
396 |
| 80 |
GRUPO AVANTEgrupoavante.com.br
We are a group focused on sustainable mining and logistics operations in Minas Gerais, prioritizing respect, transparency, and community development |
393 |
| 81 |
Viena Siderúrgica do Maranhão S/Avienairon.com.br
A mining and metals business located in Belo Horizonte, Brazil, specializing in siderurgy in the Maranhão region |
373 |
| 82 |
Grupo AVGavg.com.br
The group specializes in iron and mining activities, while also being involved in energy generation, charcoal production, forestry, and vehicle industries |
373 |
| 83 |
Hochschild Brazilhochschildmining.com
Mineral exploration company focusing on acquiring, discovering, and developing gold resources in Brazil, with prime assets in Mara Rosa and Lavras do Sul projects |
371 |
| 84 |
Buritirama Mineraçãoburitirama.com
A leading producer of manganese globally, recognized for high-quality ore Focus on growth, efficiency, and community impact in mining sector |
365 |
| 85 |
SAMA Minerações Associadassama.com.br
Specializing in mining activities, this organization focuses on mineral extraction and associated operations |
364 |
| 86 |
SAFM Mineraçãosafm.com.br
A mining company in the national iron ore market, focusing on sustainable production of high-quality ore near a strategic transport route |
362 |
| 87 |
MAIAmmaia.com.br
Specialized in outsourcing production for industries, collaborates with clients to enhance production capabilities, develop new products, and achieve ISO certification |
356 |
| 88 |
Cecil Laminação de Metaiscecil.com.br
Established in 1961, this company specializes in non-ferrous metals such as copper, brass, and aluminum, with a strong commitment to sustainable practices |
351 |
| 89 |
BVP Geotecnia e Hidrotecniabvp.eng.br
With over 30 years of experience, we specialize in Geotechnical, Hydrotechnical, and Geological consulting and project development for Mining, Energy, and Infrastructure sectors |
342 |
| 90 |
Altero Designlojaaltero.com.br
A mining and metals business based in Brazil specializing in design, production, and trading in the industry |
331 |
| 91 |
Pedreira Um Valemixpedreiraumvalemix.com.br
A leading construction materials supplier in 8 cities, providing aggregates, ready-mix concrete, and industrialized mortars Also involved in mineral extraction for steel industries |
320 |
| 92 |
Thor Natural Stonesthorgranitos.com.br
Leader in natural stone extraction, processing, and commercialization for over 30 years, with own quarries, state-of-the-art factories, and global market presence |
317 |
| 93 |
Rio Desertoriodeserto.com.br
A company in Southern Santa Catarina region with over 600 employees, specializing in coal mining and modern extraction methods, as well as forestry, metallurgy, and agriculture |
313 |
| 94 |
Ternium Brasil S.A.br.ternium.com
A mining & metals entity located in Belo Horizonte, Brazil, specializing in the extraction and processing of minerals for various industries |
295 |
| 95 |
CBF Indústria de Gusa S/Agrupoferroeste.com.br
A steel mill with over 30 years of experience in producing and selling ductile iron, focused on quality and continuous process improvement |
278 |
| 96 |
Perfilados Rio Doce S/Aperfiladosrd.com.br
Manufacturing high precision steel products with certified raw materials from brazilian steel mills, with modern facilities and nationwide distribution ISO 9001:2008 certified for quality |
258 |
| 97 |
Jundujundu.com.br
A family of over 300 professionals dedicated to responsibly transforming mineral resources into wealth-generating solutions for society |
245 |
| 98 |
Pilar Gold Inc.pilargold.com
Established in 2021, focusing on the Pilar Mine in Pilar de Goiás, creating a strong foundation for a growing gold venture in Brazil |
245 |
| 99 |
Marbrasa - Mármores e Granitos do Brasilmarbrasa.com.br
A pioneer in the industry for 55 years, inspiring people to appreciate nature's riches through high-quality extraction and processing of ornamental rocks Committed to sustainability and continual improvement |
236 |
| 100 |
FIDAfida.com.br
A long-standing organization providing innovative solutions for agriculture and construction, including limestone-based products, fertilizers, fuels, convenience stores, transportation, and internet services |
225 |
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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 Oct 24, 2026.
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