MEXICO CITY: Authorities in Mexico said Monday they have closed about 80 schools after sulfuric acid leaked from a copper mine in the countrys northwest and contaminated the Sonora River.
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MEXICO CITY: Authorities in Mexico said Monday they have closed about 80 schools after sulfuric acid leaked from a copper mine in the countrys northwest and contaminated the Sonora River.
To continue reading the rest of the article, click here