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This researcher found billions in ‘invisible’ gold in Jo’burg’s mine dumps

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As a teenager living on the East Rand of Johannesburg, Steve Chingwaru thought the flat-topped mounds of rock and earth that dotted the skyline were a natural feature of the cityscape. Jo’burg isn’t very windy, but when the wind does blow—usually around August—the air is filled with orange dust. “It gets in your hair, your […]

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