LG's device will come in a smaller form, weighing less than 6 ounces, and be housed inside a metallic exterior.

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The two pieces form a stainless steel beacon weighing almost 6 tons and will be the final piece put in place to give the building an iconic height of 1, 776 feet, a statement from the Port Authority said.

CNN: Final pieces hoisted atop 1 World Trade Center

Also weighing on the minds of investors was a failure by Greek politicians to form a coalition government.

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