Date: 12/31/1969 Views: 2482
Date: 12/31/1969 Views: 2608
Date: 10/11/2009 Views: 2657
Date: 08/23/2023 Views: 99576
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.