Box Cut

A box cut is a small open cut created to provide a secure and safe portal as access to a decline to an underground mine. Generally the box cut is sunk until sufficiently unweathered rock is found to permit the development of the decline. The portal is generally made safe with rock bolts, wire mesh, and shotcrete, which prevents accidental rock falls from closing access to the decline.

Famous quotes containing the words box and/or cut:

    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)

    You who want to be justified by the law have cut yourselves off from Christ; you have fallen away from grace.
    Bible: New Testament, Galatians 5:4.