I've made an addition to the sub-basements.
A cobblestone generator. I posted a picture of one I had made on the old survival server.
But what's this? This is new.
And safety rails?
Well, let's take a look.
I got tired of pressing the button. It suddenly occured to me to add a clock circuit.

I'm sure I'm not the first person who's thought of this, but it hadn't occured to me before. I'm quite happy with the result.
Now, I can just flip the lever and wait for the lane to fill up.
If you visit, do be careful. Try not to get caught between the wall and the advancing cobblestone column.