Date: 12/31/1969 Views: 4143
Date: 07/11/2008 Views: 4473
Date: 11/28/2009 Views: 11340
Date: 08/23/2023 Views: 704653
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.