LONDON, May 22 (Reuters) - Global miner Rio Tinto RIO.L RIO.AX said on Monday it would launch a new bond buyback of up to $2.5 billion in an effort to cut debt.
The London-listed miner said it had issued a redemption notice for $1.72 billion of its 2019 and 2020 dollar-denominated notes and a cash tender offer to buy about $781 million of its five 2021, 2022 and 2025 notes.