These mineral salts are found in granular materials like concrete, brick or stucco ... and out of the porous surface (to your inner basement wall), it carries the salts along.

Black Ceiling Tiles. For her basement media room, @homewithkrissy added ceiling tiles to make the space look more polished.

NATCHEZ, Miss., March 14. -- A gas explosion in the basement of the Natchez Drug Company, a five-story brick building, to-day blew out a rear wall, crushing the adjoining brick tement building.