The Ore Washing Plant is the ore-cleaning machine in IndustrialCraft 2, crafted on a crafting table from three Iron Plates across the top, a Machine block in the center between two Buckets, and two Electric Motors around an Electronic Circuit in the bottom row. The Ore Washing Plant runs on low voltage — a maximum input of 32 EU/t while drawing 16 EU/t — and stores 16,000 EU in an internal buffer. Each washed crushed ore also consumes 1,000 mB of water supplied by buckets, fluid cells, or a Pump, and one wash takes 25 seconds. A single operation turns one crushed ore into one Purified Crushed Ore, two Tiny Piles of the matching metal dust, and one Stone Dust.

Washing pays off through the tiny piles: nine Tiny Piles of the same metal craft into one full dust, so nine iron ore run through the Macerator, the Ore Washing Plant, and an Electric Furnace yields 22 ingots against 9 from plain smelting. The washing stage is the expensive part — 144,000 EU for eighteen crushed ores — so the Ore Washing Plant fits bases with surplus power. Four upgrade slots accept Overclocker Upgrades for faster cycles plus Ejector or Pulling Upgrades for automatic output. A wrench picks the placed Ore Washing Plant back up as an item, and uranium stays the exception: uranium in IndustrialCraft 2 comes only from the Thermal Centrifuge.