Shaft mining or shaft sinking refers to the method of excavating a vertical or near-vertical tunnel from the top down, where there is initially no access to the bottom. When the top of the excavation is the ground surface, it is referred to as a shaft or portal; when the top of the excavation is underground, it is called a winze.
Read more about Shaft Mining: Off-shaft Access, Surface Facilities, Shaft Lining, Shaft Compartments
Famous quotes containing the words shaft and/or mining:
““It’s hard to tell you how I managed it.
When I saw the shaft had me by the coat,
I didn’t try too long to pull away,
Or fumble for my knife to cut away,
I just embraced the shaft and rode it out....””
—Robert Frost (1874–1963)
“In strict science, all persons underlie the same condition of an infinite remoteness. Shall we fear to cool our love by mining for the metaphysical foundation of this elysian temple? Shall I not be as real as the things I see? If I am, I shall not fear to know them for what they are.”
—Ralph Waldo Emerson (1803–1882)