This is pretty simple, when you add a fuel with burnt result on an object (such as (portable) nuclear reactor, nuclear locomotive), it will consume it and stock the energy into a slider. If you somehow delete that object, by mining it or picking it up from the grid, it won't return the used product ...

Hey, I don't know if you are still around. But I've got a few suggestions for the mod. - differentiate the icons, heat exchange base, with sulfur, with... And heat efficiency. - hide the flipped version from hand crafting, so it does not fill with equally information on inventory. - don't create the...