Dhaka factory collapse: Can clothes industry change?

The latest tragedy to hit Bangladesh's ready-made garments industry has once again brought the power and influence of the industry into sharp focus.

The collapse of Rana Plaza, an eight-storey building which housed five garment factories, is not the first incident of its kind.

Factory owners and senior officials of the industry body - the Bangladesh Garments Manufacturers and Exporters Association - deny allegations that they exploit workers.

Jeremy Howell reports.