The Shanghai Tunnels were an underground system in Portland Oregon, used to kidnap people and sell them to captains of ships to work on the ships.
no
There are 11 underground metro systems in the UK, with the London Underground being the most well-known and extensive. Other cities with underground systems include Glasgow, Newcastle, and Liverpool.
Yes, PEX (cross-linked polyethylene) can be buried underground as it is a flexible and durable material commonly used for plumbing and heating systems.
No complete systems, only partial systems for building blocks, complexes etc
Underground utilities began to emerge in the late 19th century as urban areas expanded and the need for efficient infrastructure grew. Initially, cities installed sewer systems to manage waste and sanitation, followed by water supply systems. The introduction of electricity and gas lines soon followed, leading to the underground installation of these utilities to maximize space and improve aesthetics in rapidly developing urban environments. This trend has continued to evolve, with modern technologies facilitating more efficient and safer underground utility systems.
Ancient Babaloyian society: exact answer is currently impossible to know
The country with the largest underground network is China, primarily due to its extensive subway systems in major cities like Beijing and Shanghai. These networks facilitate transportation for millions of commuters daily and are continually expanding. Additionally, China's underground infrastructure includes extensive tunnel systems for utilities and mining operations.
Yes, "underground" is a common noun when it refers to a general area or space below the surface of the ground. It can describe various contexts, such as underground tunnels, subway systems, or even underground movements. When used in this way, it does not refer to a specific place or entity, making it a common noun.
Bus systems.
Overhead transmission lines are less expensive, in most cases, significantly less expensive, than underground cables. Underground transmission cables require insulation, cooling systems, and -the most expensive feature- excavation!
Individuals who work underground include miners, who extract minerals and resources, as well as tunnel workers involved in construction and maintenance of underground infrastructure. Additionally, subway and train workers operate in underground transit systems. Other professions may include geologists studying underground formations and utility workers maintaining subterranean pipelines and cables.
Yes, there are underground locations such as subway systems, basements, and tunnels that exist beneath the surface. These spaces serve various purposes including transportation, storage, and utilities.