Come clean over putative North Wales gaol site

The Justice Ministry should explain why a brownfield site in Caernarfon is not, after all, to be the site of a new prison for North Wales, as reported by the BBC. One can only assume that asbestos contamination is the determining factor, because in all other respects the former Ferodo factory appears ideal. Have the current owners leant on the civil servants to keep dark the condition of the site, for fear it might depress its development value?