Allows the creation of forges and furnaces.
Teachable in 4 lessons.
http://www.dayah.com/periodic/ - a Periodic Table for non-chemists wondering what all those weird abbreviations people keep using are. (Pn, etc.)
A number of public mines have been specifically donated to the public to help open this tech.
The scientists have announced that when Metallurgy has spread to seven Universities of Worship, new paths will open - this was Fragile Metallurgy.