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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.
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.
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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 ...
It was later used to store surplus parachutes (more than 8,500), medical supplies and important defense department documents, plans and computer files. Documents classified as "Secret" were securely stored inside two large vaults. Until 2013 it was operated by the Army Reserve's 88th Regional Support Command in Fort McCoy, Wisconsin. Defense ...
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