Tragedy at the Canal Port of Cagliari .
A 50-year-old worker, Raffaele Massa , was crushed between two trailers this morning during the unloading operations of a cargo ship moored at the Grendi pier .
The 118 rescue efforts were useless.
The police are busy reconstructing what happened in the hold of the Estraden ship , which arrived at the industrial port a few hours ago.
