Interesting fact I discovered

[Yitzi]

If a square produces only 1 nutrients, it is not reduced by mines.  This is calculated before the effects of enrichers and condensers.

[ete]

I think that bit's in the manual partially, and in at least the updated datalinks. http://alphacentauri2.info/wiki/Mine

Does not note the applied before enrichers/condensors though. That's worth having.

[Yitzi]

Does not note the applied before enrichers/condensors though. That's worth having.

Actually, unless you use my patch to change the effect of condenser from +50% to plus a fixed amount, it doesn't really make a difference to the mine effect, as if it was only +1 then +50% has no effect anyway.  (It does, however, affect the effect of the enricher/condenser.)  And I'm pretty sure that you can't have a condenser and mine in the same square anyway, so it actually turns out to have no effect other than that the -1 is before +50% for the enricher.  (I also edited the wiki article a bit; the +1 minerals for minerals bonus only applies if there's a road, and in such case there's also +1 for a mineral-granting landmark.)