Well,
As I have indeed PROVEN I can make one with those stats, I believe monsieur owes me a +2 book.
The BAB is in fact 27.
Let me break it down for you:
Epic: 10 BAB regardless.
Preepic:
7 cleric gets AB on 2,3,4,6,7.
5 BAB
4 monk gets BAB on 2,3,4.
3 BAB.
9 fighter gets BAB on 1,2,3,4,5,6,7,8,9.
9 BAB.
9+3+5
=12+5
=17.
17+10 = 27 BAB.
I can assure you that starting stats are correct, make it on a tester module and you comfortably get it there.
Also, as to "With the context mining needed to create this build", All I needed to do was PROVE I could make an AO or RK Scyther that got 70 AB and 80 AC. If you want to go all technical ", this screeny shows that I never needed to make it, or design the build, only prove it is doable.
EDIT: Yesterday, someone was saying "Oh, you should post on forums, name'n'shame. I ddn't really want to inspire 10+ pages of futile debate when it was clear that I a) had the build, b) it worked. It appears however, that Psiber feels the need to dredge up 3 or 4 pages of his mates going "Oh yeah, mining's build sucks". Frankly, we need someone who hasn't seen this crap as to now, Nonguilded, experienced players, SL/MA, that kind of player is who should be assessing this. They need to be shown the precise build, nothing else, and be asked to look for mistakes. So long as the assessor deosnt know the situation, all will be good.
Oh, and I win a small moral victory, because noone once said my build was not Uber as the title said ;p.