Minsur S.A. announced that the previously announced tender offer for cash (the "Offer") for any and all of its outstanding 6.250% Senior Notes due 2024 (CUSIP Nos. 60447K AA8 and P6811T AA3) (the "Notes") expired at 5:00 p.m., New York City time (4:00 p.m., Lima time), on October 25, 2021. Minsur will accept for payment and settlement all of the Notes that were validly tendered at or prior to the Expiration Date or tendered by the guaranteed delivery procedures. Payment for tendered Notes is expected to be made on October 29, 2021, by Minsur in its sole discretion.