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  2. Utility location - Wikipedia

    en.wikipedia.org/wiki/Utility_location

    Utility locating is the process of identifying and labeling public utility mains that are underground. These mains may include lines for telecommunication , electricity distribution , natural gas , cable television , fiber optics , traffic lights , street lights , storm drains , water mains , and wastewater pipes.

  3. Subsurface utility engineering - Wikipedia

    en.wikipedia.org/wiki/Subsurface_utility_engineering

    Subsurface utility engineering (SUE) refers to a branch of engineering that involves managing certain risks associated with utility mapping at appropriate quality levels, utility coordination, utility relocation design and coordination, utility condition assessment, communication of utility data to concerned parties, utility relocation cost estimates, implementation of utility accommodation ...

  4. Sierrita mine - Wikipedia

    en.wikipedia.org/wiki/Sierrita_Mine

    Originally developed as an underground mine in 1907, the Sierrita open pit has been in operation since 1959 and is a copper and molybdenum mining complex, operating on a porphyry copper deposit with oxide, secondary sulfide, and primary sulfide mineralization.

  5. National Utility Contractors Association - Wikipedia

    en.wikipedia.org/wiki/National_Utility...

    Many utility contractors were also told by other unions they were required to submit their job plans to the United Association for review, and that union would assign the work. After an unfavorable NLRB hearing over the Andrews AFB dispute, attorney Stone wrote other local D.C. contractors outlining the reasons for an association for utility ...

  6. List of hydroelectric power stations in the United States

    en.wikipedia.org/wiki/List_of_hydroelectric...

    The Hoover Dam in Arizona and Nevada was the first hydroelectric power station in the United States to have a capacity of at least 1,000 MW upon completion in 1936. Since then numerous other hydroelectric power stations have surpassed the 1,000 MW threshold, most often through the expansion of existing hydroelectric facilities.

  7. Underground Service Alert - Wikipedia

    en.wikipedia.org/wiki/Underground_Service_Alert

    Underground Service Alert (USA) is a non-profit mutual benefit organization that links the excavation community and the owners of underground lines. Underground Service Alert has two separate call centers for California : Underground Service Alert of Northern California (USA North) and Underground Service Alert of Southern California (USA South ...

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