A three-hundred year old building in Old San Juan, Puerto Rico burned badly from a fire. As a result the building was condemned for months. During that time, mold and fungi grew from water used to extin- guish the fire, especially in the lower floors, ceilings and basement. Historic Conservation officials and project architects searched for a technology that could selectively remove the mold, paint and other contaminants without causing additional damage to the brick, original wood floors and ceiling joists. They also had concerns about the location of building and close proximity of it to the public. Sponge-Jet, a dry, low dust cleaning process was selected to restore the building. Gentle Green Sponge Media TM was used in areas requiring mold and fungus removal, while mildly abrasive, Sil

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