Park service engineers are using flexible materials to fix cracks caused by quake . The park is closed indefinitely while engineers assess the damage . Hurricane Irene is threatening much of the East Coast , from the Carolinas to New Jersey .
Park service engineers are using flexible insulation to fix cracks caused by quake . The monument is closed indefinitely while engineers assess the damage . Hurricane Irene is threatening much of the East Coast , from the Carolinas to New England .