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20110421-RD-LSC-0495
The Washington Monument with LED lighting int he f
20110421-RD-LSC-0522
Interior Secretary Ken Salazar (Left) and Energy S
Interior Secretary Ken Salazar speaks about cost s
20130222-OCE-LSC-0652
Tourists and Joggers underneath the new lighting,
Energy Secretary Steven Chu discusses the 65% savi
KBK to the Trade
Two National Park Policeman on horseback with the
U.S. Ambassador David Shear Speaks at Green Building and Energy Workshop
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