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Gemstone mining mapMadagascar produces about half of the world’s high-end sapphires ... produces 5,000 to 7,000 carats a year. "Gemstone mining map" was originally created and published by Mining Technology ...
2005 Camborne and Redruth Mining District (A5i ... The publication of the Nomination file, including the maps and names, does not imply the expression of any opinion whatsoever of the World Heritage ...
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