KGHM's mine in Chile reaches early contract agreement with unions (updated)

KGHM Polska Miedz SA

02/04/2026 16:15

Adds details and context

SANTIAGO, April 2 (Reuters) - Chile's Sierra Gorda copper mine, owned by Polish group KGHM KGH.WA, reached an early contract agreement with three unions, the mine said Thursday in a statement.

The agreements, which will remain in effect until 2029, apply to more than 1,600 employees across two labor unions and a supervisor's union.

 Sierra Gorda, a joint venture with Australian miner South32S32.AX that produced 165,313 tons of copper in 2025, did not disclose the financial details of the new contracts.

 KGHM, one of the world's largest copper and silver producers, has operated Sierra Gorda for eleven years, with no strikes recorded throughout that period, the statement added.

(Reporting by Fabian Cambero; Writing by Aida Pelaez-Fernandez; Editing by Lucinda Elliott)

((Aida.Pelaez-Fernandez@thomsonreuters.com;))