Date: 12/31/1969 Views: 4046
Date: 05/26/2004 Views: 5839
Date: 12/31/1969 Views: 8068
Date: 08/23/2023 Views: 803792
WingSet96Ann The area where the tie-bar passes through a depression in the tunnel has to be prepared for closure. The tunnel depression with the areas of fiberglass and foam core removed in preparation for closure.