Date: 12/31/1969 Views: 7031
Date: 12/31/1969 Views: 3792
Date: 08/31/2007 Views: 3065
Date: 08/23/2023 Views: 160010
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.