<?xml version="1.0"?>
<resource name="iron" limited="yes" material="yes">
    <item weight="500" score="10">
        <construction skill="mining" minskill="1"/>
    </item>
    <modifier building="smithy" type="save" value="2"/>
    <modifier building="mine" type="skill" value="1"/>
    <modifier building="mine" type="material" value="0.5"/>
</resource>