Freeport-McMoRan
Freeport-McMoRan is a U.S.-based mining company and one of the world's largest publicly traded copper producers, with significant gold and molybdenum operations.
Last updated August 27, 2026
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Overview
Freeport-McMoRan is a Phoenix-based international mining company whose principal business is the exploration, development and production of copper, gold and molybdenum. Its portfolio is anchored by large-scale copper assets in the Americas and Indonesia, including the Grasberg minerals district in Papua, Indonesia, one of the world's most important copper-and-gold mining complexes. The company also operates the Henderson and Climax molybdenum mines in Colorado and copper mines and processing facilities in Arizona, New Mexico, Colorado, Peru and Chile. The business traces its origins to the Freeport Sulphur Company, founded in 1912 to develop sulfur deposits along the U.S. Gulf Coast using the Frasch process. Freeport expanded during the twentieth century into manganese, nickel, potash, oil, kaolin and other minerals. A separate but related corporate lineage began in 1967, when petroleum geologists William McWilliams, James R. Moffett and Mack Rankin formed McMoRan Oil and Gas. Freeport Minerals and McMoRan merged in 1981, creating the Freeport-McMoRan name and combining mining and energy interests. A decisive turning point was the development of the Ertsberg deposit in what is now Indonesia's Papua province. Freeport secured an agreement with the Indonesian government in 1967, built infrastructure in exceptionally difficult mountainous terrain and brought the open-pit Ertsberg mine into production in the early 1970s. Subsequent exploration identified the far larger Grasberg orebody. Grasberg became the company's strategic centerpiece, although its operation has also generated sustained criticism concerning environmental impacts, labor and security conditions, Indigenous and community rights, tailings management and the distribution of economic benefits. Freeport separated its copper-and-gold business from other operations in the 1990s, and Rio Tinto later acquired a major interest in the copper operations. In 2007, Freeport-McMoRan acquired Phelps Dodge in a transaction valued at approximately $25.9 billion, greatly expanding its copper production and making it the largest publicly traded copper producer at that time. The acquisition also shifted the corporate headquarters from New Orleans to Phoenix. In 2012, Freeport agreed to acquire McMoRan Exploration and Plains Exploration & Production, substantially increasing its oil and gas exposure. Those transactions were controversial because of overlapping ownership and governance relationships; the company later reached a settlement over conflict-of-interest claims. Freeport's current identity is centered on copper, supported by gold and molybdenum by-products. Copper demand links the company to construction, electrical infrastructure, renewable-energy systems, electric vehicles and industrial equipment. Its operating model emphasizes large, long-life assets, integrated mining and processing, technological improvement and disciplined capital allocation. At the same time, the company remains exposed to commodity-price cycles, permitting and regulatory risk, geopolitical conditions, water and tailings issues, labor relations and the social license required to operate major mines. Freeport is therefore both a major materials brand and a frequently scrutinized participant in debates about responsible mining and the energy transition.
History
Freeport-McMoRan began as the Freeport Sulphur Company, established in 1912 by Eric Pierson Swenson and investors to develop sulfur deposits near the Gulf Coast. The company helped build Freeport, Texas, as an industrial and shipping center and used the Frasch process to extract sulfur from underground deposits. In 1913, related assets were organized through the Freeport Texas Company, which became Freeport Sulphur Company in 1937. During the interwar and postwar periods, Freeport diversified beyond sulfur. It acquired manganese interests in Cuba, developed sulfur properties in Louisiana and entered nickel, potash, oil and kaolin. Its Cuban nickel operations were taken over after the Cuban Revolution, and the company later developed a nickel-cobalt project at Moa Bay with substantial U.S. government support. Freeport also created an oil subsidiary and sold selected petroleum assets as its portfolio evolved. Freeport's modern mining identity was shaped by Indonesia. Company geologists confirmed the significance of the Ertsberg deposit in the late 1950s, and in 1967 Freeport negotiated an agreement with the Indonesian government to develop it. Construction began in 1970 in the remote Jayawijaya Mountains. Roads, tunnels, aerial tramways, a mill and a long slurry pipeline were required to connect the high-altitude mine with coastal shipping facilities. Ertsberg entered production in the early 1970s, and further exploration revealed the much larger Grasberg system. A second corporate lineage arose in 1967 when William McWilliams, James Moffett and Mack Rankin founded McMoRan Oil and Gas. Freeport Minerals, the successor to Freeport Sulphur, merged with McMoRan in 1981. The combined company subsequently reorganized its assets, raised capital through asset sales and developed Grasberg with outside participation, including investment by Rio Tinto's predecessor. In the 1990s, the copper-and-gold business was separated from other Freeport operations. The company later became more focused on copper through the 2007 acquisition of Phelps Dodge, which added major mines in the United States, South America and elsewhere. The deal also established the current Phoenix headquarters. In 2012, Freeport pursued acquisitions of McMoRan Exploration and Plains Exploration & Production, briefly expanding the company's exposure to oil and gas. Governance concerns surrounding those related-party transactions led to litigation and a later settlement. The company has faced repeated criticism over its Indonesian operations and other mining activities. Allegations and disputes have concerned environmental damage, riverine and terrestrial tailings, labor rights, security arrangements, Indigenous communities and the adequacy of consultation and compensation. The Indonesian state also pressed for greater ownership and domestic processing. A 2018 restructuring transferred majority ownership of the Grasberg operation to Indonesian interests while Freeport continued to operate the mine and retained a major minority stake. In the twenty-first century, Freeport has concentrated on copper, gold and molybdenum. Its strategy emphasizes expanding and extending existing mines, moving Grasberg from open-pit to underground production, increasing domestic processing and applying technologies such as leaching to lower-grade ores. Copper's role in electrical networks, renewable generation, batteries and transport supports the company's long-term market narrative, but profitability remains dependent on commodity prices, costs, permitting, operating reliability and relationships with host governments and communities.
- 2024
Chief executive transition
[2]Kathleen Quirk became chief executive after Richard Adkerson's tenure.
- 2018
Grasberg ownership restructuring
[3]Indonesia obtained majority ownership of the Grasberg operation in a restructuring that preserved Freeport's operating role.
- 2012
Oil and gas acquisitions announced
[1]Freeport announced agreements to acquire McMoRan Exploration and Plains Exploration & Production.
- 2007
Phelps Dodge acquisition completed
[1]Freeport completed its major acquisition of Phelps Dodge, expanding its global copper portfolio.
- 1995
Rio Tinto predecessor invests in Freeport
[1]RTZ invested in the company and became a significant participant in the Grasberg project.
- 1981
Freeport Minerals merges with McMoRan Oil and Gas
[1]The merger created the Freeport-McMoRan corporate combination.
- 1973
Ertsberg reaches full operation
[1]The technically demanding high-altitude open-pit mine became fully operational.
- 1967
Agreement to develop Ertsberg
[1]Freeport negotiated with Indonesia to develop the deposit that became the foundation of the Grasberg district.
- 1959
Ertsberg deposit confirmed
[1]Freeport geologists confirmed the significance of the copper-and-gold deposit in New Guinea.
- 1931
Langbourne Meade Williams Jr. gains control
[1]A shareholder proxy contest resulted in Williams becoming president and initiating a broader diversification program.
Products and positioning
A large-scale, globally diversified base-metals producer positioned around copper growth, operational scale, long-life reserves and the materials required for electrification and industrial infrastructure.
Base metals
Copper
Copper is Freeport-McMoRan's principal product and strategic focus. The company produces copper cathode, concentrates and related output from large open-pit and underground operations in North and South America and Indonesia. Copper is sold into construction, electrical equipment, power transmission, industrial machinery, communications and clean-energy supply chains.
Precious metals
Gold
Gold is primarily produced as a by-product of copper mining, especially at the Grasberg minerals district. Its contribution can materially affect mine economics and revenue, although Freeport's corporate strategy and investment profile remain centered on copper rather than standalone gold mining.
Specialty metals
Molybdenum
Freeport operates major molybdenum assets in Colorado, including the Climax and Henderson mines. Molybdenum is used mainly as an alloying element in specialty steels and other high-performance materials. The product diversifies the company beyond copper and has historically made Freeport one of the world's leading molybdenum producers.
Mining operation · 1967
Grasberg minerals district
Grasberg is Freeport's flagship mining complex in Papua, Indonesia. It contains copper and gold resources and has transitioned from the historic open pit toward large-scale underground production. The district includes mines, concentrators, infrastructure and processing arrangements and remains central to Freeport's production profile and public identity.
Controversies
2018
Indonesian ownership and environmental scrutiny at Grasberg
The ownership restructuring at Grasberg occurred amid continuing scrutiny over environmental management, mine waste, community relations, labor conditions and the division of economic benefits between Freeport and Indonesia.
2015
Conflict-of-interest claims over related acquisitions
Shareholders alleged that overlapping relationships among directors, executives and the companies involved in the 2012 oil-and-gas transactions created conflicts of interest. Freeport later agreed to a monetary settlement without admitting wrongdoing, according to contemporary reporting.
2000
Environmental and human-rights controversies in Papua
Freeport's Indonesian operations have faced long-running criticism concerning environmental impacts, mine waste and tailings, alleged effects on local and Indigenous communities, labor disputes and security arrangements. The issues have been the subject of investigations, civil-society campaigns and negotiations with Indonesian authorities.
Brand decisions
2024
Appoint Kathleen Quirk as chief executiveOtherBackground
Freeport implemented a planned succession after Richard Adkerson's long tenure as chief executive.
Action taken
Kathleen Quirk became president and chief executive officer.
Aftermath
The transition maintained continuity while placing day-to-day leadership under a longtime Freeport executive.
2018
Restructure Grasberg ownershipStrategyBackground
Indonesia sought greater domestic ownership and control of the strategically important mining complex.
Action taken
Freeport agreed to a structure giving Indonesian interests a majority stake while retaining a major minority interest and operating responsibilities.
Aftermath
The arrangement preserved Freeport's access to Grasberg while aligning the project more closely with Indonesian ownership and processing objectives.
2012
Acquire McMoRan Exploration and Plains Exploration & ProductionM&ABackground
Freeport pursued growth and diversification into oil and gas through acquisitions of affiliated companies.
Action taken
The company announced agreements with a combined enterprise value reported as more than $20 billion.
Aftermath
The transactions increased petroleum exposure and generated shareholder criticism regarding governance and related-party conflicts.
2007
Acquire Phelps DodgeM&ABackground
Freeport sought to increase scale and strengthen its position in global copper mining.
Action taken
The company completed the acquisition in a transaction valued at approximately $25.9 billion.
Aftermath
The transaction substantially expanded Freeport's copper portfolio and moved the company's headquarters to Phoenix.
Transaction value. Approximately US$25.9 billion (2007)
Recent events
Freeport increases contribution to Amarc's JOY exploration program[5]
Freeport-McMoRan Mineral Properties Canada increased its Year 1 contribution to Amarc's 2021 JOY exploration program by about 50%, from $4 million to $5.94 million.
CMOC announces acquisition of a 95% stake in the Kisanfu copper-cobalt mine[6]
Reported:
China Molybdenum said it would acquire all shares in Jenny East and Kisanfu from Freeport-McMoRan, indirectly obtaining a 95% interest in the Kisanfu copper-cobalt mine in the Democratic Republic of the Congo for $550 million.
Freeport-McMoRan prices upsized $1.5 billion senior notes offering[7]
Reported:
Freeport-McMoRan announced that it had priced an upsized offering of $1.5 billion in senior notes, increased from the previously announced $800 million. The sale was expected to settle on July 27, 2020, subject to customary closing conditions.
Zijin Mining announces acquisition of Timok lower-zone interests[8]
Reported:
Zijin Mining said it would acquire a 72% stake in CuAu International Holdings from Freeport, giving it interests in the lower zone of Serbia’s Timok copper-gold mine and related exploration rights. The transaction was described as an acquisition plan, not as completed.
Sources11 sources
- 1Freeport-McMoRanen.wikipedia.org
- 2Freeport-McMoRan leadershipfcx.com
- 3Grasberg operationsfcx.com
- 4Reuters report on Freeport settlementreuters.com
- 5Freeport增加对Amarc JOY勘探项目的出资dallassun.com
- 6洛阳钼业宣布收购Kisanfu铜钴矿95%权益finet.hk
- 7Freeport-McMoRan为增至15亿美元的优先票据发行定价tucson.com
- 8紫金矿业宣布收购Timok铜金矿下带矿权益finance.sina.com.cn
- 9紫金矿业(02899)2.4亿美元收购Timok铜金矿下带矿权益及Rakita持有的探矿权权益finance.sina.com.cn
- 10紫金矿业2.4亿美元收购Timok铜金矿下带矿权益及Rakita持有的探矿权权益finance.sina.com.cn
- 11紫金矿业收购自由港在塞尔维亚的铜/金资产finance.sina.com.cn
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