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2. Manhole cover - Wikipedia

   en.wikipedia.org/wiki/Manhole_cover

   A round manhole and its cover. A manhole cover is a removable plate forming the lid over the opening of a manhole, an opening large enough for a person to pass through that is used as an access point for an underground vault or pipe. It is designed to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.

3. Thomas Crapper - Wikipedia

   en.wikipedia.org/wiki/Thomas_Crapper

   Thomas Crapper Branding on one of his company's toilets In the 1880s Prince Albert (later Edward VII ) purchased his country seat of Sandringham House in Norfolk and asked Thomas Crapper & Co. to supply the plumbing, including thirty lavatories with cedarwood seats and enclosures, thus giving Crapper his first Royal Warrant .

4. Manhole - Wikipedia

   en.wikipedia.org/wiki/Manhole

   Manhole covers in Helsinki, Finland. Manhole closings are protected by a grating or manhole cover, a flat plug designed to prevent accidental or unauthorized access to the manhole. These covers are traditionally made of metal, [2] but may be constructed from precast concrete, glass reinforced plastic or other composite materials (especially ...

5. Watch your step: People are removing manhole covers when ...

   www.aol.com/news/watch-step-people-removing...

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6. Manhole covers spotted bouncing up and down on Chinese road

   www.aol.com/news/manhole-covers-spotted-bouncing...

   This is the bizarre moment manhole covers were captured bouncing up and down on a road in northwestern China. In the video, shot in the city of Shangluo in Shaanxi Province on August 1, a couple ...

7. Sanitary manhole - Wikipedia

   en.wikipedia.org/wiki/Sanitary_manhole

   A sanitary manhole under construction. A sanitary manhole (sewer manhole, [1] sanitary sewer manhole [2] or sewer maintenance hole [3]) is a manhole that is used as an access point for maintenance and inspection of an underground sanitary sewer system. Sanitary manholes are sometimes used as vents to prevent the buildup of pressurized sewage ...