Dr Keysberg described the international contractor’s experience on the project, now massively over budget and way behind schedule, as “extraordinary”.
He said that TIE had made a specific commitment to clear certain areas of the route of underground utilities before work started, but had failed to do so. “That was the biggest surprise,” said Dr Keysberg.
Until now, Bilfinger Berger has been prevented by gagging clauses from defending itself in public.
The interview will be broadcast in Scotland at 10.35pm tonight (11 October) in a documentary called The Great Tram Disaster. It can also be seen on the BBC website (link here).