Date: 12/31/1969 Views: 3524
Date: 12/31/1969 Views: 4049
Date: 11/05/2010 Views: 2618
Date: 08/23/2023 Views: 82736
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.