Give reason-
V) The articles of iron, such as manhole covers, drain pipes etc., are cast and not stamped.
V) The articles of iron, such as manhole covers, drain pipes etc., are cast and not stamped.
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A manhole cover or maintenance hole 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 maintenance and other work on an underground utility vault or pipe. It is designed to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.