Tunnel - Floor Lowering

Floor Lowering

Tunnels can also be enlarged by lowering the floor.

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Famous quotes containing the words floor and/or lowering:

    “The distant box is open. A sound of grain
    Poured over the floor in some eagerness we
    Rise with the night let out of the box of wind.”
    —John Ashbery (b. 1927)

    “Science is a dynamic undertaking directed to lowering the degree of the empiricism involved in solving problems; or, if you prefer, science is a process of fabricating a web of interconnected concepts and conceptual schemes arising from experiments and observations and fruitful of further experiments and observations.”
    —James Conant (1893–1978)