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reserves in South Africa having estimated reserves of 70.4 million tonnes of manganese
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80:. Black Rock represents one of the largest
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111:. assmang.co.za. 2012. Archived from
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187:Manganese mines in South Africa
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88:grading 39% manganese metal.
192:Economy of the Northern Cape
106:"Black Rock manganese mine"
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163:27.133306°S 22.833306°E
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120:. Retrieved
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92:References
40:Production
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25:Location
66:Hotazel
30:Country
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