UN rescue team assists Beirut recovery operations

United Nations rescue workers fanned out across devastated port area of Beirut on Friday in faint hope of finding survivors from this week's explosion.

Arjan Stan, a Dutch member of UN's Urban Search and Rescue force, said survivors h yet been found, but good progress was being me in recovery efforts.

Working at heart of blast site, team saw extrordinary scale of devastation caused by disaster.

More than 150 people were killed in blast, apparently caused by a stockpile of 2,750 tons of ammonium nitrate stored in a port warehouse.