You are updating the fuel mod, we are in the very painstaking process of upating the realictic reactors mod - finally we can have Factorio with reasonable nuclear functionality again!

Sorry for the late reply, but thanks for this. It's nice to know people enjoy some of the stuff I make

Sure :)

Btw I think there is a bug with the atomic bomb tech. I cant research it, the disabled kovarex tech still seems to be an (invisible) prerequisite.

When I put this line in a seperate data-updates.lua file it works - I think changing vanilla tech needs to be in that stage.
data.raw["technology"]["atomic-bomb"].prerequisites = {"military-4", "nuclear-fuel-reprocessing", "rocketry"}

Fixed, thanks for letting me know - for some reason Space Age overwrites the atomic bomb research requirements with the same values as the base game, probably an oversight.