The Curve's formula is ''y'' = 2''x''-(''x''/10)^2, where ''y'' is the "effective skill" and ''x'' is the raw skill number. For example, at 50 raw skill in mining, one can get 75 max. ql of ore, since their effective skill is 2*50-(50/10)^2, which equals 75 effective skill.
The reverse of the formula is ''x'' = -10*(-10+(100-''y'')^2), using the same x/y values as before. However this is not a full curve so it only works for the numbers 0-100.
==Exceptions==