05/04/2013 (Agence Europe) - Mergers: Ratos-Ferd Aibel Holding/Aibel Group. On Friday 5 April, the European Commission authorised the joint acquisition of Swedish engineering, construction and energy services company, Aibel Group, which operates on offshore oil and gas rigs in the North sea, mainly off the coast of Norway, by Swedish investment conglomerate Ratos AB and Norwegian investment company Ferd Aibel Holding AS, controlled by Norwegian financial and industrial investment...