Well, I've gone and spent my hard-earned LP buying this shitpile of a perk they call "Deep artifice". Since I've accumulated quite a load of Cast Iron bars, looking forward to making at least 50% of it Wrought Iron, as soon as I've bought the perk I fired up my finery forge, and after a few hours of smelting -- "Enjoy the greatest possible success when forging wrought iron" my ass, I do believe there's a typo here and it should say "greatest possible suck-cess": 90 bars of cast iron smelted into 60 blooms, and those 60 (sixty) blooms gave me 2 (two) bars of Wrought Iron and 58 bars of Cast iron.
That's a nice way of crippling one's production, guys. Not only I've spent a whooping 150k LP for nothing -- no, that's not the only case: now I also get a mere 3% chance of getting Wrought from a bloom.
Let this be a friendly warning to all the dedicated miners over there: DO NOT be stupid like me and get this Deep Artifice perk; not before a confirmation appears that it' either been fixed or someone had, indeed, had "the greatest success" advertised (which would mean I'm unlucky beyond the extreme point).
And, just saying -- those treehuggers get a Druid hat recipe when buying their 150k perk. We miners get a huge incapacitating handicap and no new items whatsoever. Great job guys. Great job.