The iron brush factory mainly needs to combine the alloy furnace of [RP2] to achieve automation through the [BC] pipeline or [RP2] pipeline.

Main conditions:

Iron can be burned into RC steel with blast furnaces.[Iron: RC Steel = 1: 1]

Iron can make miners.【Iron: Mining Car = 5: 1】

RC steel can make double mining cars.【RC Steel: Mining Car = 5: 2】

The RP2 alloy furnace can restore the mining car into [iron].【1 Mine car = 5 iron】

Production line:

Need: coke brick furnace ^{1 -blast furnace 2 -box 3 +Automatic workbench 4 > 5 -blast furnace 2}

Coke brick furnace ^{1 coal -to -coal manufacturing coal coke}

Through the pipeline, the coal coke is extracted from the coke brick furnace ¹ and entered it

^{extract RC steel from the blast furnace 2 through the pipeline and entered into the box 3}

Driver automatic workbench ⁴ RC steel production mining car

The mining car produced by the automatic workbench ⁴ is entered into the alloy furnace ⁵ through [RP2] pipelines (BC pipes are not good, please point out if you are wrong)

The alloy furnace ^{5 decompose the mine car into iron, then extract the decomposed iron and enter the blast furnace 2}

In this way, as long as the coal is provided, you can be infinitely iron. The alloy furnace is recommended to use the Blue Stone Power Alloy Furnace.