Massive cranes move into trade centre site

Crews working in the smouldering ruins of the World Trade Centre have begun assembling giant cranes capable of lifting hundreds of tons of debris at a time.

The delicate search continues for victims of the terrorist attacks. But with the powerful cranes - one 420 feet high and with a base the size of a basketball court - workers will be able to remove more debris and larger chunks blocking access to parts of the wreckage.