Lots of current cars are built to be recycled, but what about older vehicles? After being crushed the larger chunks of metal can be re-used, but that leaves a sludge of smaller parts that can leach toxins into landfills.

CSIRO Minerals are developing methods to clean this sludge up and get the maximum value from it by using mineral processing techniques. At present it’s a low margin operation but any number of factors, from rising material costs to more stringent landfill controls, could make it a money spinner.

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