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.
Adacency Bonus
+1 Production from each adjacent Industrial Zone tile.
+1 Production from each adjacent Oppidum tile.
+1 Production for having an adjacent river tile, requires Bronze Working, becomse obsolete with Machinery.