https://www.youtube.com/watch?v=m-5VRh4aCe4&feature=youtu.be

that was funny

He's very lucky that's all that happened!

Transcrete now has a radio remote blow out system. The operator can be so well trained that he can pop the sponge ball into his hand. So smooth... 80% of new Transcrete pumps delivered now have the optional remote blow out kit. Costs a lot but worth the safety.

that was awesome

Digger: If you have enough time you can teach a now brainer to pump concrete just learn him the routines over and over again. But you can never teach a now brainer how to blow out a line on a safe way. Because there is now routine on doing that. 

Superdoffer, I will have some of the pumpers with Transcrete remote air blow out kits fitted take videos to show how to train no brainers. It has been done.