Wouldn't opening up the mines, firing up the kilns be like going back to the 80s. Personally, I can't see many people willing to work in those @*!# conditions for @*!# money as they did decades ago again when the UK has become a big player in the technology and pharmaceutical sectors. If the EU killed these industries by making the working regs to improve safety and quality of life making them go to the third world countries where they could continue cutting costs in safety I think its best they don't come back.