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Slide rules Northern Greece is full of gorges slicing across Egnatia Odos' alignment.

'This project is a constant battle with the elements,' says Brown & Root design manager Iain Ure. 'We're finding landslips 0.5km long. Sometimes you ask: are we in the right valley?' Brown & Root project director Rod Capper agrees: 'People have encountered these problems before, but here the whole geomorphology is bad.'

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