Work begins on 9/11 memorial in Pennsylvania

Work has begun in Pennsylvania on a memorial park to victims of the September 11 terrorist attacks.

Relatives of those who died on United flight 93 attended the ceremony as the ground was broken in the field near Shanksville where the plane crashed.

The park, which is going to cost in the region of $58 million, is planned for completion in 2011.

It will include a chapel with chimes commemorating each of the 40 flight 93 victims and a private field of flowers planted on the crash site itself.