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Blast furnaces are similar to furnaces but are used to smelt mineral blocks in particular.[needs testing] When a smelting item and a fuel is placed into the blast furnace, the block state will change to lit and the item will smelt, twice as fast as a regular furnace. Fuel is also used at double the rate of regular furnaces, so that the amount of items cooked per fuel stays the same. The product can then be collected by pressing use on the blast furnace. Like normal furnaces, a hopper can be fed into a blast furnace and can also pick up items from it.