1) Concrete 2) German invention
Found on
https://www.crosswordclues.com/clue/concrete-pump
A concrete pump is a machine used for transferring liquid concrete by pumping. There are two types of concrete pumps. The first type of concrete pump is attached to a truck. It is known as a trailer-mounted boom concrete pump because it uses a remote-controlled articulating robotic arm (called a boom) to place concrete with pinpoint accuracy. Boom...
Found on
http://en.wikipedia.org/wiki/Concrete_pump
No exact match found.
