1 Mint no gum (MNG) â the stamp appears to be unused but has no gum. 2  It might have been used but not cancelled, or have been issued without gum. 3  Unmounted mint (UM) â the stamp is unused and appears never to have been mounted.
The Alaskan Way Viaduct replacement tunnel is a bored road tunnel that is under construction in the city of Seattle in the U.S. state of Washington. The project has been stalled since December 2013.No firm date for if/when the project will continue has been set.n January 12, 2009, the state of Washington, King County, the city of Seattle, and the Port of Seattle revealed that they had agreed to replace the viaduct with a bored underground tunnel.
Located in McKean County, this park is the home of the newly reinvented Kinzua Viaduct. The Viaduct, once known as the longest and tallest railroad structure at 2,053 feet long and 301 feet high, was partially destroyed by a tornado in 2003.he overlook is great for viewing fall foliage, especially in the peak viewing time of the first two weeks of October. Visitors stroll the 600-foot long walkway on the remaining support towers for the best view, and to peer down through the glass at the valley floor 225 feet below.