The steel pipe that tunnel machine Bertha struck in December wasn’t just some scrap that a contractor forgot to remove in 2002 — but a crucial piece of equipment that engineers reused as recently as ...
An unknown object that fascinated the country last month when it stopped the world’s most powerful tunnel boring machine digging underneath Seattle has finally been identified. And officials are ...
For the installation of casing in a wide range of soil without surface slump, a new pipe rammer and bentonite system package from TT Technologies is suited to oil and gas pipeline placement under ...
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