Advantic: New York subway project may vault Beavercreek company's new material into mainstream

New York City officials were in a bind: To reach their goal of ventilating individual subway tracks during an emergency, they needed to close gaps in the walls between the tracks. The problem was the concrete panels needed to seal those gaps - many of which are the size of a door - interfere with communication signals. That would force transit officials to invest $1 billion in an antenna system upgrade. So last spring they called on Dayton-area company Advantic LLC, a subsidiary of Beavercreek-based…