There are also the massive costs of cleaning up and decontaminating such heavily used sites, which have seen nearly a century of steel making.
Both these factories have been used for explosives, which means that before they can be put to alternative use, they have to be decontaminated.
Many people are not aware of what is required to decontaminate water supplies.
Information specifically on decontaminated land which has subsequently been used for housing developments is not available centrally.
However, no chemical treatment has been shown to reliably decontaminate seeds.
Anyway, our view is that the public schools do not need to be decontaminated in this way.
Therefore, consumers may be directly exposed to pathogens contaminating sprouts if seeds are not decontaminated.
A subsidy such as the greenfield development levy could be used to cross-subsidise the cost of decontaminating such sites to bring them into use.
