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{|class="wikitable" style="float:right;max-width: 35%;"|-!colspan="2"| Cost|-|'''Cost''' |{Facility information table| $150, 250x [[coal]], 500x [[iron]]|-|'''Total Cost''' || $1,200|-!colspan="2"| Production|-|'''Inputs''' || 4x [[coal]], 1x [[iron]]|-|'''Outputs''' || 1x [[steel]]|-|'''Production interval''' || 35 seconds|-|'''Production/Min''' || 1.714x [[steel]]|-!colspan="2"| Profit|-|'''Profit/Min''' || $13.71|-|'''Profit/Hour''' || $822.86|-|'''Return On Investment''' || 0.744%|-!colspan="2"| Aliases|-|colspan="2"|steel mill, steelmill, steel furnace, steelfurnace|}}

The steel mill is a facility that produces 1x [[steel]] every 35 seconds. [[steelSteel]] is used mainly for Construction Material rather than production input. The List of Building Buildings that use [[steel]] can be seen below.

A Steel Mill need 1 [[Iron mine]] and 1 [[Coal mine]]. You need 4 [[Iron mine]] for every 7 [[Steel mill]] and can passively provide enough materials to support (1 more [[Coal mine]] for every 7 [[Steel mill]].</br>For every 50x production it'll have 1 excessive [[Iron]] and for every 5x production, it will have 3 excessive [[Coal]]-2) steel mills.

== Ratio ==You need Recommended build ratio is 4/7 of a [[Coal Iron mine]] and 1/7 of an [[Iron mine]] to maintain this factory. In other words, You need 4 [[Coal mine]] and 1 [[Iron mine]] for every 7 [[Steel mill]] to create fully passive production line without excessive input.

For every 50x production it'll have 1 excessive [[Steel millIron]] and for every 5x production, it will have 3 excessive [[Coal]].</br>Excess material can be sold or stockpiled in case of bad regional modifiers. == [[Help:IdleCorp_Profit#Ratio|Ratio]] ==[[Help:IdleCorp_Profit#Minimum|Minimum]] : 1 [[Iron mine]] : 1 [[Coal mine]] at minimum: 1 [[Steel mill]]==== [[Help:IdleCorp_Profit#Meta_Ratio|Meta Ratio]] ====</br>4 [[Iron mine]] : 7 [[Steel mill]]

'''Disclaimer: The ratio above is only for calculation only. The real value may vary.'''

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