The tank is a concrete cylinder six feet in diameter and 19 feet deep, with a two-foot opening at ground level.

He pushed on the top of the concrete cylinder with his toe.

The bridge is supported by several 7 foot (2.1m meter) thick concrete H-pile cylinders, which the bridge's steel girders sit atop.

To his left, Ben could see two of those concrete cylinders with the manhole covers on top.

He remembers one of those concrete cylinders not far away, humming to itself the way the Xerox machine had hummed for the pretty high-school girl just now.

The grooves went down the bank and led ultimately to one of those concrete cylinders - one of the pumping-stations.

His words had a flat resonance inside the concrete cylinder, not quite an echo.

Because - His foot hooked under something and he fell over with a thud, nearly striking his head on the pumping-station's concrete cylinder.

The tower is made up of two concentric concrete oval cylinders which do not come in contact with each other.

Each will be loaded into its own giant concrete cylinder, with holes to allow air circulation.