IN PICS: Work starts on Sept 11 memorial

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A general view of the Ground Zero building site in New York. Construction workers started putting up the frame of the National September 11 Memorial on the site of the destroyed World Trade Centre twin towers. (Getty Images)
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Workers at Ground Zero in New York work and watch as the first beam for the future 9/11 memorial is raised into place. Construction workers started erecting the frame of the National September 11 Memorial and Museum nearly seven years after the terrorist attacks destroyed the World Trade Centre. (Getty Images)
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A worker at Ground Zero holds a flag attached to the first beam for the future 9/11 memorial before it is positioned in New York. (Getty Images)
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This 11 September 2001 file photo shows a man standing in the rubble, and calling out asking if anyone needs help, after the collapse of the first World Trade Centre Tower in New York. (Getty Images)
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The second tower of the World Trade Centre collapses after being hit by a hijacked commercial aircraft on 11 September 2001 in New York. (Getty Images)
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New York City firefighters work at the World Trade Centre after the terrorist attack on September 11, 2001. (Getty Images)
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Pedestrians run from the scene as one of the World Trade Centre Towers collapses. (Getty Images)
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Rescue workers sift through the wreckage of the World Trade Centre, two days after two hijacked airplanes crashed into the twin towers, destroying them. (Getty Images)
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Hijacked United Airlines Flight 175 from Boston crashes into the south tower of the World Trade Center and explodes at 9:03 am on September 11, 2001 in New York. (Getty Images)
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A hijacked commercial plane approaches the World Trade Centre shortly before crashing into the second tower in New York. (Getty Images)
Wed 03 Sep 2008 03:04 PM GST