China drills a 1-kilometer hole with a 500-ton “underground aircraft carrier,” and the target is hidden minerals

China's 500-ton Steel Backbone machine drills deep underground, opening a new frontier in strategic mineral extraction.
Engineering News-Record

Vertical Shaft Machine Makes U.S. Debut in Seattle

For the James W. Fowler Co. of Dallas, Ore., using a vertical shaft machine made by Germany’s Herrenknecht for a 145-ft-deep, 30-ft-dia launching portal as part of a $32-million sewer upgrade project ...
Seattle Daily Journal of Commerce

Use of German excavation machine on Ship Canal tunnel a first for U.S.

King County is getting ready to use a shaft excavation machine that will be the first of its kind in North America. James W. Fowler Co., the general contractor, is using it to build a 30-foot-diameter ...
komonews

County: Euro technology to make Ship Canal sewer replacement quieter, smoother

According to King County, state-of-the-art European technology - never before used in North America - will make the process of replacing the 77-year-old wooden sewer line underneath the Ship Canal a ...