FILE - In this April 28, 2013 file photo, Bangladeshi rescue workers 

FILE - In this April 28, 2013 file photo, Bangladeshi rescue workers search for survivors as they are seen through a hole in the roof a building that collapsed Wednesday in Savar, near Dhaka, Bangladesh. Hundreds of volunteers rushed to the site of a building that collapsed last week to rescue thousands of people trapped in the rubble. They were ordinary folk - self-taught medics and neophyte rescuers.  (AP Photo/Kevin Frayer File)
Associated Press
FILE - In this April 28, 2013 file photo, Bangladeshi rescue workers search for survivors as they are seen through a hole in the roof a building that collapsed Wednesday in Savar, near Dhaka, Bangladesh. Hundreds of volunteers rushed to the site of a building that collapsed last week to rescue thousands of people trapped in the rubble. They were ordinary folk - self-taught medics and neophyte rescuers. (AP Photo/Kevin Frayer File)
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