Concrete & Asphalt: Unique Structures
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Show us your photos of buildings, structures, or other engineered projects that have been made of at least 65% concrete or cement. Examples: bridges, dams, older skyscrapers that show their concrete on the exterior... even sidewalks are fair game if it's configured outside of the norm.
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Wednesday, 7th December, 2011 (GMT)
Wednesday, 14th December, 2011 – Tuesday, 20th December, 2011 (GMT)
Wednesday, 21st December, 2011 – Tuesday, 27th December, 2011 (GMT)
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