ZAMBIA · MARKETS

Key Facts

—The project: KoBold Metals has broken ground on the Mingomba mine, set to become Zambia’s biggest copper mine.

—The cost: The build is expected to cost more than $2.3 billion, among the largest investments in the country’s history.

—The backers: KoBold is funded by billionaires including Bill Gates and Sam Altman, and uses artificial intelligence to hunt for minerals.