By Jill Rothenberg, The Washington Post PUEBLO — Hair freshly done from the beauty parlor on a recent Friday morning, Ada Clark, 93, and her daughter Carol, 63, met in front of the J.C. Penney in the Pueblo Mall, about 100 miles south of Denver. Their afternoon plan: a walk around the mall, followed by lunch at Red Lobster. When the mall was built in 1976, Pueblo was a booming steel town.