May 22 (Reuters) - Rio Tinto Plc RIO.L :
* Rio Tinto launches new debt reduction programme
* Launches new debt reduction programme for up to $2.5 billion
* Rio Tinto will use its strong liquidity position to further reduce gross debt
* Rio Tinto has issued a redemption notice for approximately $1.72 billion of its 2019 and 2020 US dollar-denominated notes
* Commenced cash tender offers to purchase up to approximately $781 million of its five 2021, 2022 and 2025 US dollar-denominated notes Source text for Eikon: Further company coverage: RIO.L
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