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  2. Manhole cover - Wikipedia

    en.wikipedia.org/wiki/Manhole_cover

    The theft of manhole covers often increases when scrap metal prices are high. [18] [19] Manhole cover theft can be a serious problem in China, where missing manhole covers caused at least eight deaths in 2004. [20] According to China's Xinhua News Agency, about "240,000 manhole and street-drain covers were stolen in Beijing in 2004." [21]

  3. Operation Plumbbob - Wikipedia

    en.wikipedia.org/wiki/Operation_Plumbbob

    The operation consisted of 29 explosions, of which only two did not produce any nuclear yield.Twenty-one laboratories and government agencies were involved. While most Operation Plumbbob tests contributed to the development of warheads for intercontinental and intermediate range missiles, they also tested air defense and anti-submarine warheads with smaller yields.

  4. Sacramento’s history is underfoot. Take note of these manhole ...

    www.aol.com/sacramento-history-underfoot-note...

    The manhole cover business has turned over the years, from the sort of ornate covers that a business like Berry’s Foundry might have crafted to drabber covers that dot Sacramento’s streets today.

  5. Manhole - Wikipedia

    en.wikipedia.org/wiki/Manhole

    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

  6. Answer Woman: Who makes the manhole covers with river ...

    www.aol.com/answer-woman-makes-manhole-covers...

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  7. Neenah Foundry - Wikipedia

    en.wikipedia.org/wiki/Neenah_Foundry

    Neenah Foundry was established 152 years ago in 1872 by William Aylward, Sr., as Aylward Plow Works. [1] The name was changed to Aylward and Sons in 1904 and to Neenah Foundry Co. in 1922. [1]

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