I've got a little bit of a predicament. I created a pit to dump goblins in, then I tried to fill that pit up with water in order to kill them.
Of course that's when I find out that you need to actually have the place filled with 7/7 water and a floor above them in order to kill them.
Unfortunately, I left a few holes open in the level above to drop them in, and I can't do anything about it because the moment I queue up a floor hatch to fill the holes, the dwarves suspend the construction out of fear.
How do I fix this?
(The goblins are dropped in from pits above. Those floor hatches are suspended.