Aer Rianta chairman Noel Hanlon prompted a minor stir last week when he arrived at a briefing sporting a graze on his forehead.

Known for his jolly disposition, the Longford man is not one to bang his head against the wall when doing business at the airport company. So what happened?

"Apologies for my forehead," said Hanlon. "I met Michael O'Leary on the way in."

Given that O'Leary has advocated the use of Semtex during his verbal battle with Aer Rianta, The Margin assumes he won't take the slight to heart.