In 2011, the Sammon construction group was riding high and on course to generate annual revenues of €100 million. The business, which specialised in school building and social infrastructure, had managed to secure lucrative middle eastern contracts at a time when the Irish construction industry was in the doldrums. But good things don’t always last. In 2018, the Co Kildare group run by the couple Miceal and Cathy Sammon collapsed after UK construction titan Carillion went bust carrying €1 billion in debts.  Sammon was part of a consortium with Carillion and a Dutch Infrastructure Fund (DIFCO) that was hired to…