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Small Prison (1k Prisoners)

I wanted to see if it was possible to hold 1000 prisoners in the smallest plot size.

It has the potential to earn much more if you replace the min sec with max sec, however, I found it to be most peaceful with the population split into 1/2 min and 1/2 med. I was able to leave it running overnight and woke up to 0 deaths and 0 escapes. To be fair, tunnels and escape plans are turned off.
It is possible to run this prison with tunnels and escape plans on, but I found it too tedious to do tunnel checks and shakedowns every day.
Technically, this prison doesn't really need 325 guards to function, but I think it's necessary to have enough roaming around to put a stop to any scuffles before they become riots.

I have not tested it in escape mode, but I imagine it would be pretty easy to escape.