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Unionized workers end strike at Sierra's Peruvian polymetallic mine

Sierra Metals Inc. said March 18 that a strike initiated by a group of unionized contract workers at its polymetallic Yauricocha mine in Peru ended following negotiations between the two sides.

The workers, representing less than 10% of the mine's workforce, returned to work March 17. The company noted that the labor action will not have any impact on its full-year production and cost guidance.