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    Beyond their functional role, manhole covers prioritize safety. Sturdy construction prevents accidents, and specialized designs enhance safety measures. Some even feature ventilation systems to protect against harmful gases, ensuring the well-being of workers and residents.

    Two major materials used for the construction of manhole cover are cast iron and concrete. These two materials are also used in combination with the construction of manholes. Both the materials are durable, heavy and inexpensive. With technology, manhole covers are made from fiberglass, plastic, and composite.