KALISPEL, Mont., July 7. -- The largest railroad tunnel in the world is nearly completed, through the the Cascade Mountains west of here. It is the pet scheme of J.J. Hill, President of the Great ...

The earliest tunnels in Southern California were built for shelter, or mining purposes, but as civilization encroached, the region’s mountainous terrain required tunnels for railroads, aqueducts, and ...

22. CASCADE TUNNEL: 7.8-mile tunnel in Washington State is the longest in the U.S. 23. PORTLAND UNION STATION: The essence of a classic major station resides in the Rose City of the Pacific Northwest.

The straight cascade wind tunnel can be used to investigate planar cascades at Mach numbers in the sub- to supersonic range and at engine-relevant Reynolds numbers. Depending on the application, ...

The transonic cascade wind tunnel (TGK) is installed at the Institute of Propulsion Technology in Cologne. This large-scale facility is used for investigations on compressor blade cascades; it is the ...

Today, it is dwarfed by numerous other tunnels, including the Cascade Tunnel in Washington, at 7.8 miles. With upgrades and modifications, the San Fernando Tunnel is still in use today.