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

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

   A reader asks for details about the Metropolitan Sewerage District's designed manhole covers. ... 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Mail.

6. Municipal castings - Wikipedia

   en.wikipedia.org/wiki/Municipal_castings

   Drainage Grate Municipal Casting. Municipal castings refers to many products, including: access hatches; ballast screens; benches (iron or steel); bollards; cast bases; cast iron hinged hatches, square and rectangular; cast iron riser rings; catch basin inlet; cleanout/monument boxes; construction covers and frames; curb and corner guards; curb openings; detectable warning plates; downspout ...

7. Parents Accused of Leaving Toddler in Closet Overnight with ...

   www.aol.com/parents-accused-leaving-toddler...

   Two Indiana parents are in custody after allegedly leaving their 2-year-old daughter in a closet overnight with a space heater turned all the way up.