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Halfway There
1 World Trade Center reached the halfway mark, the 52nd story, earlier this week.
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Long Time Coming
It has taken a little more than four years to reach this point—test drilling began in June 2006.
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Core Values
The building's elevator core, its main structural support, rises in February 2009.
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Street Level
Just shy of two years later, in May 2008, 1 World Trade Center would breach street level.
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Weaving Steel
Ironworkers assemble reinforced steel for the core, which will be encased in concrete.
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Iron Working
A construction worker welds steel inside the building's core.
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Taking Shape
The first row of columns were complete in November 2009.
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Big Time
The first of the "jumbo columns" that will support the building is installed in August 2009.
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Fantastic 52
Notice the chamfered corners, the signature design feature of SOM's tower.
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Filling Out
The World Trade Center site in November 2009.
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Hi-Ho, Hi-Ho
The site photographed earlier this month.
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Going Up
1 World Trade Center reached 20 stories in February of this year.
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Little to the Left
A worker on the 52nd floor.
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Those Corners
The chamfer creates the tower's unusual, torqued shape.
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Lloyd Blankfein Is Watching
The tower has nearly surpassed 200 West Street, the newish Goldman Sachs headquarters.
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The Top of Downtown
Looking south, the towers of the Financial District can be seen.
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We're Coming For You, Pal
It will not be long before 1 World Trade Center is the tallest structure in the city.
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Hard at Work
Construction continues nonstop on the site, in hopes that that the memorial will be open in time for the 10th anniversary of 9/11. The towers will open a few years after.
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Happy Holidays from Ground Zero
An intrepid construction worker added colored lights to the site earlier this month, turning it into the city's largest Christmas tree—bigger, even, than the one at Rockefeller Center.
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