I had a couple of thoughts. For OpSec you may want to consider a couple of quiet ways to split wood. One of the cheaper options is the
Quality Craft Foot-Operated Log Splitter 1.5-Ton, Model# LSF-001:
I have this one and it works reasonable well. I also use a hand splitter which is a bit loud. For larger pieces of wood or for some knotty stuff you can use the
Wel-Bilt Horizontal Manual Hydraulic Log Splitter 10-Ton:
The Wel-Bilt splitter is heavy and you may want to keep it stationary somewhere. It does work very well.
Finally, in a grid down situation electricity (electric splitter) or fuel may not be available. These tools provide a non-fuel powered option and are quiet.