FRONTERA AND KUPARI ANNOUNCE COMMENCEMENT OF STRATEGIC SALE PROCESS FOR THE JOINTLY OWNED PIEDRAS VERDES COPPER MINE COMPLEX IN SONORA, MEXICO

MEXICO CITY, June 23, 2026 /PRNewswire/ — Frontera Copper Corporation, S.A.P.I. de CV and Kupari Investments Ltd. ("Kupari"), collectively the "Companies", announced today that Frontera Copper Corporation ("Frontera"), and Kupari Metals A.G., a wholly-owned subsidiary of Kupari, have…

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