In-Game Text
"Iron, although it is not the most precious, yet it is the most necessary of all metals for the use of man; notwithstanding it may be disputed, whether the good or hurt it hath done in the world, be the greater…"
– James Hodges, Treatises upon Metals, Mines and Minerals
To refine the various ores of the earth into usable metals requires the significant skill and forbearance of the trained metallurgist. Metallurgy allows you to construct and use Ore Smelters.
Smelting
The amount Ore Metal Bars produced in your  Ore Smelter is based partially on chance but mostly influenced by the Ore/Lime ratio and your Alloying Artifact Bonus. Currently, the best Ore/Lime ratio is 13x  Lime and 12x  Any Ore of one type. To smelt place your Lime and Ore in a lit Ore Smelter. After about 40 minutes 1x, or rarely 2x, of your Ores will be replaced with a corresponding Ore Metal Bar and the rest of your Ore will have become  Dross. Each time a Dross is produced there is a chance for it become  A Face in the Dross instead. Using a  Little Limestone in place of one of your Limes may also increase the number of Metal Bars that are created.
Ore Metals
Ore Metals are Metal Bars that can be made from Metal Ore  Mined straight from the earth. Any Ore Chipped from an  Ore Boulder can be smelted in a lit Ore Smelter to make Ore Metal Bars.
Metal Forging Skills
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