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Mexican copper output rose by 4.2% to 35,911 tonnes in May compared with the same month last year.
Coal production fell by 0.9% year-on-year to 1.74 million tonnes, Inegi’s figures showed.
Lead production dipped by 8.6% to 16,447 tonnes, while zinc output increased by 7.1% to 39,872 tonnes.
Output of gold increased by 3.5%, while silver expanded the most, in percentage terms, notching up an 18.6% rise over May 2011.
