Pádraig Mac Lochlainn (Donegal, Sinn Fein)
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In July 2022, almost two years ago now, Dr. Andreas Leemann, a recognised international expert on concrete products, testified before this committee on his findings on testing of blocks. He talked about iron sulphate attacks and pyrrhotite as being the dominant cause. I would have put those questions to the witnesses at that time. Can the National Standards Authority of Ireland confirm that it is aware of that evidence having been given in July 2022 to this housing committee by an international expert on the matter?