Tunnel boring machines have been in operation for over 200 years and they operate on the same basic principles today as they ...

For electric cable crossings ... of any underground utility installations, keeping any roadway or waterbody fully operational all throughout the project. John Barbera has been an employee at Barbco ...

Bay Area startup Earthgrid says it's developing a plasma boring robot that can dig underground tunnels 100x ... mechanical rotary boring machines, which scratch cutting wheels against rock and ...

On a flat, windswept green plain north of Hamburg in the state of Schleswig-Holstein, Germany, a Herrenknecht tunnel boring ... cable installation. It’s a semi-continuous move ahead. The machine ...