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  2. Underground construction - Wikipedia

    en.wikipedia.org/wiki/Underground_construction

    Underground construction has a number of unique risks and challenges but shares a lot with traditional construction and mining. Underground construction workers often work under reduced light condition, in dangerous spaces, and are at a high risk of exposure to contaminants, fire, and explosions.

  3. Trenchless technology - Wikipedia

    en.wikipedia.org/wiki/Trenchless_technology

    It is a rapidly growing sector of the construction and civil engineering industry. It can be defined as "a family of methods, materials, and equipment capable of being used for the installation of new or replacement or rehabilitation of existing underground infrastructure with minimal disruption to surface traffic, business, and other activities."

  4. StraightLine HDD - Wikipedia

    en.wikipedia.org/wiki/StraightLine_HDD

    StraightLine entered the HDD market with the introduction of its line of DirectLine drills in 1989. In 1991 the company moved to a 36,000 sq ft (3,300 m 2). facility in Newton, Kansas, and opened a new 9,000-square-foot (840 m 2) engineering/technical support facility on the 13-acre (53,000 m 2) grounds.

  5. Category:Underground construction - Wikipedia

    en.wikipedia.org/wiki/Category:Underground...

    Underground construction companies (2 P) Underground hangars (1 C, 2 P) Pages in category "Underground construction" The following 12 pages are in this category, out ...

  6. Category:Professional and trade magazines - Wikipedia

    en.wikipedia.org/wiki/Category:Professional_and...

    A trade magazine or trade journal is a publication that targets a particular industry, ... Computer Underground Digest; Construction Equipment; Construction Law Journal;

  7. California’s ultrarich are building hidden mansions beneath L.A.

    www.aol.com/finance/california-ultra-rich...

    Coined “iceberg homes” to indicate that a significant portion of living space is underground and hidden beneath the surface, these amenity-filled subterranean levels include wine cellars, home ...

  8. Chicago Tunnel Company - Wikipedia

    en.wikipedia.org/wiki/Chicago_Tunnel_Company

    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]

  9. How Chinese science fiction went from underground magazines ...

    www.aol.com/news/chinese-science-fiction-went...

    For a few days in October 2023, the capital of the science fiction world was Chengdu, China. Fans traveled from around the world as Worldcon, sci-fi’s biggest annual event, was held in the ...