Date: 12/31/1970 Views: 5325
Date: 04/16/2005 Views: 3457
Date: 03/17/2008 Views: 2918
Date: 08/23/2023 Views: 140910
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.