Boring, also called internal turning, is used to increase the inside diameter of a hole. The original hole is made with a drill, or it may be a cored hole in a casting. Boring achieves three things: ...

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A 21-ft, 8-in dia earth pressure balance tunnel boring machine has launched in Seattle to begin creation of a 2.7-mile-long tunnel that will store combined sewer overflow as part of the city's consent ...

When complete, the six-kilometer Blue Line Project will add five new rail stations east of Saint-Michel station.

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

Shaft sinking original-equipment manufacturer Herrenknecht is engaged in numerous feasibility studies with mining contractors in South Africa and other African countries, such as Zambia, for the ...