Rescuers work at the collapsed Rana Plaza building in Savar on the outskirts of Dhaka, capital of Bangladesh, on April 26, 2013. The death toll from Wednesday's building collapse in Savar on the outskirts of Bangladesh's capital Dhaka climbed to 304. (Xinhua/Shariful Islam)

Rescuers carry a survivor out of the rubble at the collapsed Rana Plaza building in Savar on the outskirts of Dhaka, capital of Bangladesh, on April 26, 2013. The death toll from Wednesday's building collapse in Savar on the outskirts of Bangladesh's capital Dhaka climbed to 304. (Xinhua/Shariful Islam)

A man mourns for his missing relatives at the collapsed Rana Plaza building in Savar on the outskirts of Dhaka, capital of Bangladesh, on April 26, 2013. The death toll from Wednesday's building collapse in Savar on the outskirts of Bangladesh's capital Dhaka climbed to 304. (Xinhua/Shariful Islam)

Rescuers carry a survivor out of the rubble at the collapsed Rana Plaza building in Savar on the outskirts of Dhaka, capital of Bangladesh, on April 26, 2013. The death toll from Wednesday's building collapse in Savar on the outskirts of Bangladesh's capital Dhaka climbed to 304. (Xinhua/Shariful Islam)

Rescuers search for victims at the collapsed Rana Plaza building in Savar on the outskirts of Dhaka, capital of Bangladesh, on April 26, 2013. The death toll from Wednesday's building collapse in Savar on the outskirts of Bangladesh's capital Dhaka climbed to 304. (Xinhua/Shariful Islam)

Rescuers work at the collapsed Rana Plaza building in Savar on the outskirts of Dhaka, capital of Bangladesh, on April 26, 2013. The death toll from Wednesday's building collapse in Savar on the outskirts of Bangladesh's capital Dhaka climbed to 304. (Xinhua/Shariful Islam)

Medical students transfer a survivor from the collapsed Rana Plaza building in Savar on the outskirts of Dhaka, capital of Bangladesh, on April 26, 2013. The death toll from Wednesday's building collapse in Savar on the outskirts of Bangladesh's capital Dhaka climbed to 304. (Xinhua/Shariful Islam)

A woman holds photos of her missing relatives at the collapsed Rana Plaza building in Savar on the outskirts of Dhaka, capital of Bangladesh, on April 26, 2013. The death toll from Wednesday's building collapse in Savar on the outskirts of Bangladesh's capital Dhaka climbed to 304. (Xinhua/Shariful Islam)

A woman holds a photo of her missing relative at the collapsed Rana Plaza building in Savar on the outskirts of Dhaka, capital of Bangladesh, on April 26, 2013. The death toll from Wednesday's building collapse in Savar on the outskirts of Bangladesh's capital Dhaka climbed to 304. (Xinhua/Shariful Islam)

A man prays during rescue operation at the collapsed Rana Plaza building in Savar on the outskirts of Dhaka, capital of Bangladesh, on April 26, 2013. The death toll from Wednesday's building collapse in Savar on the outskirts of Bangladesh's capital Dhaka climbed to 304. (Xinhua/Shariful Islam)

Rescuers work at the collapsed Rana Plaza building in Savar on the outskirts of Dhaka, capital of Bangladesh, on April 26, 2013. The death toll from Wednesday's building collapse in Savar on the outskirts of Bangladesh's capital Dhaka climbed to 304. (Xinhua/Shariful Islam)

Soldiers distribute supplies to people at a school field during the rescue operation at the collapsed Rana Plaza building in Savar on the outskirts of Dhaka, capital of Bangladesh, on April 26, 2013. The death toll from Wednesday's building collapse in Savar on the outskirts of Bangladesh's capital Dhaka climbed to 304. (Xinhua/Shariful Islam)

Medical students transfer a survivor from the collapsed Rana Plaza building in Savar on the outskirts of Dhaka, capital of Bangladesh, on April 26, 2013. The death toll from Wednesday's building collapse in Savar on the outskirts of Bangladesh's capital Dhaka climbed to 304. (Xinhua/Shariful Islam)