After the 9 meters, they sink into the sea and continue for another 10 meters.                                    http://youtu.be/zgjiinu3s9Q

Very Very nice, thanks for posting it. If  you can please post your videos on our video site also. more people will see them that way.

www.ConcretePumpingVideos.com

Also I noticed you use a metal trap door on the end of your hose right? what country are you from? over here in the USA that is against the law.

I'm from Greece and laws for the pumping does not exist.Only rules, and easily changed.    I personally do not use it.  At this job is better this from nothing. OK I know this is the right system, but crisisland here.          

now that is nice. did you make that? or do you buy it?

This system used by all  manufacturers of pumps. SCHWING PUTZ CIFA KCP etc.

That looks like a tight job.  I know that here in the US if you dont have rebar caps on any rebar less than 7' abover standing level, its a $15,000 fine per missing cap.  Our company just got hit with one.