Details
Obtained: Smelting of iron ore, crafting of Blocks of Iron, found in Dungeon, Stronghold, Abandoned Mineshaft, and NPC Village Chests, killing iron golems (naturally spawned) and killing Zombies.
Creates: sword, armor, tools, Blocks of Iron, compass, rails, flint and steel, doors, cauldrons, minecart, and Iron Bars.