Recipes: Copper

{
  "branch": "copper-smelting",
  "cost": {
    "copper-ore": 2,
    "charcoal": 1
  },
  "station": "smelter",
  "seconds": 12,
  "description": "A work-grade cast copper rod reduced from carbonate or oxide ore with charcoal; quality 1 remains imperfect copper."
}