Drill and Deal

News / 2026

· Financing, Copper

BHP sells a $4.3bn silver stream on Antamina to Wheaton

Wheaton Precious Metals will pay BHP $4.3bn up front for silver linked to BHP’s 33.75% share of output from the Antamina mine in Peru. It was described as the largest precious metals stream ever by upfront payment. The mine’s operator is not a party to the deal.

The Antamina copper mine area at Yanacancha, Áncash, Peru, in 2026
Photo: Chillka de Huari, CC BY-SA 4.0

Why it matters. A stream turns a by-product into cash today, without selling any of the mine.

Source
Mining Weekly
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Module 7: Funding a project