John J. Powers, president of the St. Louis Club, which will occupy the top three floors of the Pierre Laclede Building in Clayton, raises a flag atop a model of the structure as a larger flag is raised on the newly completed core of the building. The steel concrete core was completed in 17 working days by the Fruin-Colnon Construction Company, rising at the rate of 15 feet a day. The building itself will rise around the core in the next phase.