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 Clean water ingress through an incline mine shaft to the mine void on the East Rand. (Photos by J.J. van Wyk) |
 Sinkhole formation resulting from shallow coal mining on the East Rand. (Photos by J.J. van Wyk April 2011) |
 Groundwater level visible in a sinkhole at Largo Colliery, (Photos by J.J. van Wyk April 2012) |
 Schematic Model of the Eastern Basin |
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.JPG) Grootvlei Shaft 3 - Head Gear, East Rand Basin, (Photo by J Jay, April 2013) |
.JPG) Grootvlei Shaft 3, East Rand Basin (Photo by J Jay, April 2013) |
.JPG) Marievale Shaft 1, East Rand Basin (Photo by J Jay, April 2013) |
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