Iron & Tools
Ore from the north hills, ingots in the Industrial center, and every tool on the island.
Where to go
Iron ore — the quarry north of the airport (12 veins). Smelter, Tools Workshop and Barrel Works are side by side in the Industrial center; the Scrap Yard is south of the Lumber yard.
What to gather
Buy a Pickaxe at the Super Market. Mine Iron Ore from the veins.
Pickaxe 
Iron Ore How to process
Smelter: Iron Ore → Iron Ingot; Ingot + Plank → Sickle. Tools Workshop: Ingot → Axe/Pickaxe/Shovel head; head + handle (Sawmill) → tool. Barrel Works: 3 Ingots → Empty Barrel.
Iron Ingot 
Axe Head 
Pickaxe Head 
Shovel Head 
Empty Barrel 
Sickle Where to sell
Iron Ingots: Scrap Yard ($100). Axe, Pickaxe, Shovel: Super Market. Barrels feed the oil chain.
Iron Ingot 
Axe Pickaxe 
Shovel
TipThe Sickle has no use and no buyer yet — skip it. Tools sell for the price of the ingot alone; make them for your own use, not for profit.