What is to be done with the non-European when they're no longer able to work and administrating any more methamphetamine will surely kill them? Are they doomed to no longer be of any use to Europa? Well now there is a way to maximise their usefulness, even after their inevitable death. They can be used as a supplement to coal if not outright replacement in coal power plants, desalination facilities and other places that require de facto coal furnaces. I've discovered two ways of increasing the fuel efficiency of non-European carcases. Increasing the amount of body fat and increasing the amount of ammonia. Unfortunately, neither of them are cost effective if the increase is to be done naturally. However, if done unnaturally then there is great potential with the ammonia. Also, utilising the ammonia method would be more environmentally friendly, for whatever that's worth.