A hole in the ground used to access the sewers or other underground vaults and installations
An opening usually equipped with removable cover and large enough to admit a man into a cargo tank or dry bulk trailer; may incorporate vents, fill opening and other devices
a hole (usually with a flush cover) through which a person can gain access to an underground structure
A safety hole constructed in the side of a gangway, tunnel, or slope in which miner can be safe from passing locomotives and car Also called a refuge hole
Large opening in the side wall of a wine tank through which spent pomace or lees is removed after the wine is racked (drained) off Cellar workers can enter through the manhole for tank cleaning
An opening which permits access to the space between the roof and the ceiling, or below the floor
A manhole is a large hole in a road or path, covered by a metal plate that can be removed. Workers climb down through manholes when they want to examine or clean the drains. a hole in the surface of a road covered by a lid. It is used to examine underground pipes, wires etc