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Oldest ocher mine on American continent discovered in Mexico

Valentina Ruiz Leotaud | July 05, 2020 | 7:00 am Education Exploration Latin America Coal Iron Ore 

Archaeologists and cave divers found in Mexico what they believe is the oldest known mine in the American continent. In a paper published in the journal Science Advances, the explorers explain that a flooded cave in the southeastern state of...

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