Credit: AP
ADVANCE FOR MONDAY JAN. 30 AND THEREAFTER - This Saturday Jan. 21, 2012 photo shows Archeological Conservator Christopher Mills injects a synthetic resin into a wall at the Graffiti House in Brandy Station Graffiti House in Culpeper, Va. The process helps stabilize the wall before attempting to remove coats of paint covering the writings of Civil War soldiers. (AP Photo/Culpeper Star Exponent,Vince Vala)Advertisement
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