Unlocks the Builder ability to construct a Lumber Mill.
+1 Production.
Can be built on Woods or valid Resources. If built on Luxury resources, the city will gain use of that Resource. +1 Production for each adjacent Industrial Zone District (except Hansa District). Once Guilds is unlocked it can also be built on Rainforest.
After researching Bronze Working Technology, for each improved Lumber Mill Resource in this city, +10% Production towards districts and buildings.
Adacency Bonus
+1 Production from each adjacent Industrial Zone tile.
+1 Production from each adjacent Oppidum tile.