Newmont is the world's largest gold miner. It bought Goldcorp in 2019, combined its Nevada mines in a joint venture with competitor Barrick later that year, and also purchased competitor Newcrest in November 2023. Its portfolio includes 17 wholly or majority owned mines and interests in two joint ventures in the Americas, Africa, Australia and Papua New Guinea. The company is expected to produce roughly 6.9 million ounces of gold in 2024. However, after buying Newcrest, Newmont is likely to sell a number of its higher cost, smaller mines accounting for 20% of forecast sales in 2024. Newmont also produces material amounts of copper, silver, zinc, and lead as byproducts. It had about two decades of gold reserves along with significant byproduct reserves at the end of December 2023.

Kinross Gold is a Canada-based gold producer, producing roughly 2.2 million gold equivalent ounces in 2023. The company had about a decade of gold reserves at the end of 2023. It operates mines in the Americas and West Africa after selling its low-cost Russian operations in 2022 in response to the invasion of Ukraine. The company has historically used acquisitions to fuel expansion into new regions and production growth. In 2022, Kinross purchased the Great Bear project in Canada, which, if developed, could produce an average of more than 500,000 ounces of gold per year for at least a decade.

Marsh McLennan is a professional services firm that provides advice and solutions in the areas of risk, strategy, and human capital. The company operates through two main segments: risk and insurance services and consulting. In risk and insurance services, the firm offers services via Marsh (an insurance broker) and Guy Carpenter (a risk and reinsurance specialist). The consulting division comprises Mercer (a provider of human resource services) and Oliver Wyman (a management and economic consultancy). About half of its revenue is generated outside the US.

Based in Toronto, Barrick Gold is one of the world's largest gold miners. In 2023, the firm produced nearly 4.1 million attributable ounces of gold and about 420 million pounds of copper. At year-end 2023, Barrick had about two decades of gold reserves along with significant copper reserves. After buying Randgold in 2019 and combining its Nevada mines in a joint venture with competitor Newmont later that year, it operates mines in 19 countries in the Americas, Africa, the Middle East, and Asia. The company also has growing copper exposure. Its potential Reko Diq project in Pakistan, if developed, could double copper production by the end of the decade.