Dont put too much in them block walls, lucky no one was hurt, just the pump!

sorry for the pump damage, glad nobody got hurt.

Good Illustration and heads up LocalBoy.  Looks like the concrete is a bit wet for the application. If tight you can bring it up slow and in lifts applicable to the situation so to not cause to much pressure on the block.

Nobody got hurt and looks to be minimal damage. Lesson Learned.

How long before the pump was the block laied?  I have had blowouts where they had laied the block a few hours earlier.

good point,green mortar.looks like a 3/8 mix and not block fill,rots of ruck

Yeah way to wet, this was the classic, over ordered on the slab, stick the rest in that wall!

I see cap blocks.  Was it being pumped behind the wall ?

Yes, told them only half fill it!