From ESOUI Wiki
Returns the minimum amount of a refined smithing material that will be produced by refining a raw smithing material. Note that "smithing" here refers to blacksmithing, clothing, and woodworking.
local min = GetSmithingRefinementMinRawMaterial() local max = GetSmithingRefinementMaxRawMaterial() d(LocalizeString("Refining a raw material will produce between <<1>> and <<2>> usable materials.", min, max))