Jens Kristensen was in the UN's Port au Prince headquarters when Haiti's worst earthquake struck a year ago. He survived five days trapped in the rubble of the building

Kristensen was enclosed in a five-foot long space so dark that it made no difference if his eyes were open or closed. He survived on a fallen jar of coffee and powdered milk. He also saved his urine to drink in case of dehydration but didn't have to use it.

When he was dug out his injuries were minimal and he was back at work a day after being released from hospital.