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.
Oct. 7 project update: New video shows Bertha repair effort. Posted on Oct 7 2015 10:38 AM. Work continues at the bottom of the 120-foot-deep pit where Seattle Tunnel Partners is readying Bertha, the SR 99 tunneling machine, for the rest of her tunnel drive beneath downtown Seattle.lan ahead: Semiannual viaduct inspection closure set for Halloween weekend. Posted on Oct 1 2015 1:52 PM. October is here, which means the semiannual inspection closure of the Alaskan Way Viaduct is just around the corner.