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A utility vault is an underground room providing access to subterranean public utility equipment, such as valves for water or natural gas pipes, or switchgear for electrical or telecommunications equipment. A vault is often accessible directly from a street, sidewalk or other outdoor space, thereby distinct from a basement of a building. [1] [2]
A utility tunnel, utility corridor, or utilidor is a passage built underground or above ground to carry utility lines such as electricity, steam, water supply pipes, and sewer pipes. Communications utilities like fiber optics , cable television , and telephone cables are also sometimes carried.
The Chicago Tunnel Company was the builder and operator of a 2 ft (610 mm) narrow-gauge railway freight tunnel network under downtown Chicago, Illinois.This was regulated by the Interstate Commerce Commission as an interurban even though it operated entirely under central Chicago, did not carry passengers, and was entirely underground. [1]
A manhole (utility hole, maintenance hole, [1] or sewer hole) is an opening to a confined space such as a shaft, utility vault, or large vessel. Manholes, typically protected by a manhole cover , are often used as an access point for an underground public utility , allowing inspection, maintenance, and system upgrades.
With more than 50 sites on our map of Illinois’ Underground Railroad, it would be quite challenging to make the 1,100-mile round trip in a single vacation. ... But as September is International ...
The Atchison Storage Facility, commonly known as the Atchison Caves, is a 2.7 million square foot underground storage facility in a former pillar limestone mine 50 to 150 feet (15 to 46 m) below the ground in the Missouri River bluffs at Atchison, Kansas.
The map shows 11 vaults have been filled, not including the most recent four. Grids of purple glass blocks salvaged from sidewalk repairs downtown are being stored in the city of Salem's ...
If you were paying attention in history class, you’ll recall the Underground Railroad wasn’t a railroad at all. Rather, it was a fluid network of locations where freedom seekers sought refuge ...