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View all search resultsMiner Rio Tinto said on Friday its chief executive and two senior executives will step down amid mounting shareholder criticism of its destruction of historically significant Aboriginal rockshelters and the way it managed its response.
Researchers diving into dark submerged caves on Mexico's Yucatan Peninsula have found evidence of an ambitious mining operation starting 12,000 years ago and lasting two millennia for red ochre, an earth mineral pigment prized by prehistoric peoples.