The use of contaminated material and mine residues in construction has also been identified as a means of dispersal of radioactive material into the environment.
“Tailings dams (containing toxic mining residue) must be vegetated and seepage of water from tailings dams must be controlled to prevent the pollution of ground and surface water. Contaminated soil must be removed and replaced with uncontaminated soil,” says Liefferink.
The Department of Water and Environmental Affairs would investigate and promised to respond in due course.
http://www.thenewage.co.za/39411-1009-53-Mine_dumps_toxic_threat
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