Second Avenue Subway tunneling project
Project Related

New York MTA Project Updates

Tunnel Business Online had a neat article in the April 2012 issue discussing the progress on the various New York MTA tunneling projects. They suggest that this may someday be considered the ‘Golden Age of […]

Available Resources

Roadheaders in North America

Drill and Blast and Tunnel Boring Machine are two common types of tunnel construction methods. But roadheaders have been around for many years, getting their start in the coal mining industry. So where do they […]

Holocene Drilling installing borehole extensometer on University of Washington campus
Project Related

Holocene Drilling Handles Tunnel Project

Specialty geotechnical drilling contractor Holocene Drilling of Edgewood, WA recently completed work on an interesting project for Sound Transit’s U-220 TBM Tunnel Project at the University of Washington Campus in Seattle. Their scope included drilling […]