mining

The biggest mines on Earth expose how copper, iron, coal, gold, and diamonds reach the global economy, and why size can mean depth, output, or area.

How Bitcoin mining uses proof of work to order transactions and secure the network, with clear coverage of halvings, difficulty, hardware, energy estimates and profitability uncertainty.

Chile holds the largest lithium reserves at 9.2 million tonnes, ahead of Australia, China, Argentina, and the United States. Reserves, resources, and production tell three different stories.

China holds about 44 million tonnes of rare earth reserves and mined roughly 270,000 tonnes in 2025, about 69% of the world total. Here is how the reserve and production rankings differ, and why refining matters more than either.