Thanks for your nudge in the right direction. Your answer does seem to be speaking to what I'm asking but as an outsider that's just getting started I'm not taking your full meaning. I believe I understand that retro-genning is adding new ores brought in by a mod to an existing world (chunk even), correct? Are you saying they don't need these options turned on anymore because there is another method used now to bring uranium into the worlds? I have set some large 64x64 quarries (pre-atomicscience.cfg change) and never found a uranium block. That's what got me noticing there was something I had to look into here. Also, can you tell me what you mean by 1.0.6 worlds? I'm not sure whose version that is. I assume not vanilla MC engine, nor does it seem to be in line with AS's versions.
Maybe more to the point, can you tell me what is my best process to get started in playing with the AS mod included with tekkitmain? Should I be switching on options in atomicscience.cfg in a fresh world and start mining? As I said, I'm very new to this. From what I can gather, if you want to play with fission reactors, you need uranium and if you expect to split a few atoms you'll need to process uranium ores up through a few stages with some other machines. If this mod needs its ores switched off by default, are there other mods included in tekkitmain that are in the same "because retro-genning was enabled to support..." circumstance that I should know about before I dig into them?
From some of the tutorials I have seen on youtube on playing with AS, I am very excited to build up to this power output level through legit play and I hope with the help you and others provide I can get things dialed in correctly.