Mr. John Wickham:

It is not just a matter of goodwill; it is a legal responsibility. The National Building Control Office is heavily focused on the risk that is posed by the extractive industries. The standards that underpin concrete blocks are heavily technical. There are defined rules, boundaries and performance limits. Primarily, the programme of market surveillance is dictated by the national market surveillance authority in conjunction with the 31 building control authorities through regional chairs. The Department also sits on that group. Transport Infrastructure Ireland has a role. We must keep in mind that aggregate does not just go into buildings but also goes into civil engineering works. The Geological Survey of Ireland is also involved. It is the lead agency with expertise with regard to geoscience.