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Old 26th December 2007, 11:18 AM   #3
leftysergeant
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Join Date: Jul 2007
Posts: 18,863
Probably just paint chips. Has anyone determined the composition of the paint on the steel of the towers? Jones' pictures look the same color as the primer on the perimeter columns.

Many paints are different colors on poposite sides because pigments will separate and move to the surfaces during curing.
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