Date: 12/31/1969 Views: 2413
Date: 12/31/1969 Views: 3097
Date: 07/09/2006 Views: 2574
Date: 08/23/2023 Views: 100624
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.