Smart manhole cover concept detects gas levels and provides reserve power

03/02/2012, If you’ve ever thought that manhole covers were merely covers, you might want to rethink that thought thanks to designer Wang Yi & Ji Ze, both of whom have come up what appears to be a smart manhole cover that [...]

Map Hole guidance tool concept

11/13/2009, The humble manhole is literally spat upon during its daily existence, but things could change in the future as folks pay more respect to it, assuming it comes in the form of the Map Hole concept. This concept is a [...]