An engine servicing facility for the JGL

[MasonJar]

Believe it or not, some brickwork looked like that - with the gaps. I can't recall seeing cinderblock used in such a way, but there are definitely examples of standard brick joints being made like that. Especially where the house or building in question is a double, triple or quad-brick wall.

I'll see if I can find some pictures. (Very) quick google did not turn up anything.

Edited for clarification...

Andrew