Minsur S.A. announced the extension of the Expiration Date and amendment to the Settlement Date (each, as defined below) of its offer to purchase for cash its outstanding 6.250% Senior Notes due 2024 (the "Notes") for an aggregate purchase price of up to $300 million, in accordance with Minsur's Offer to Purchase dated May 19, 2021 (the "Offer to Purchase") pursuant to which the tender offer is being made.