Date: 12/31/1969 Views: 5630
Date: 09/19/2008 Views: 5655
Date: 12/31/1969 Views: 4789
Date: 08/23/2023 Views: 771660
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.