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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.
December 1 – In Winchester, Massachusetts, a lighted match dropped into a sewer manhole by an employee of the Arlington gaslight company set off an explosion which injured five gas line repairmen and blew the steel manhole cover 30 feet into the air. The gas ignited along the sewer line into Rangeley, where two more manhole covers were blown ...
Back glass is also called rear window glass, rear windshield, back shield, or rear glass. It is the piece of glass opposite the windshield. Back glass is made from tempered glass , also known as safety glass , and when broken shatters into small, round pieces. [ 1 ]
In the video, shot in the city of Shangluo in Shaanxi Province on August 1, a couple of manhole covers bounced up and down repeatedly on a road, while vehicles drove past next to it. According to ...
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 ...
Here's what you need to know to safely remove ice off your windshield. ... say experts, can crack and shatter the glass, leading to an expensive repair. Deicing solutions help, but can remove car ...