Mr. Peadar Espey:

It can be across a variety of reasons and Mr. Garrett has just touched on it with regard to Petrolab. In some of the dwellings there can be different types of concrete blocks. There can be a different type of concrete block below ground compared with the outer leaf and inner leaf. Therefore there are different levels of damage or low levels of damage, and there are different levels of deleterious material. There is a variety of information. Our chartered engineers assess this in bulk in various project groups. We might have 20 or 25 reports and we are assessing them. We see patterns and standardisation across them and in the backdrop we are applying the IS 465 standard.