Medieval flour mill?
Grain mill explosion under investigation by officials, company
Apparently ConAgra blew up a modern grain mill just two years ago.
By all means, enjoy your kero stove. Some of us have no issues with bottled gasses. Perhaps every kero burner I've met has been improperly adjusted or fueled, and yours in the only one with no odor. Perhaps. And perhaps bottled gasses are always unsafe.
Once you convince me of that, I'll get the USCG to make "flaming cooking appliances" totally illegal on all vessels, as a safety hazard. All of them. Hey, no one needs
hot food on a boat.