<Tr> <Td> Pennsylvania Steel Company </Td> <Td> Steelton, Pennsylvania </Td> <Td> ArcelorMittal </Td> <Td> Former integrated mill </Td> </Tr> <P> The two main inputs into iron - and steel - making are a source of iron and a source of energy . Additional requirements are a fluxing material to remove the impurities, and alloy metals to give particular properties to the metal . </P> <P> Raw materials used in US iron and steel production, 2012 </P> <Table> <Tr> <Th> Input </Th> <Th> metric tons </Th> <Th> Purpose </Th> </Tr> <Tr> <Td> Iron ore </Td> <Td> 46,900,000 </Td> <Td> Iron source </Td> </Tr> <Tr> <Td> Iron and steel scrap </Td> <Td> 104,100,000 </Td> <Td> Iron source </Td> </Tr> <Tr> <Td> Coke </Td> <Td> 9,490,000 </Td> <Td> Reducing agent </Td> </Tr> <Tr> <Td> Lime </Td> <Td> 5,730,000 </Td> <Td> Flux </Td> </Tr> <Tr> <Td> Fluorspar </Td> <Td> 47,800 </Td> <Td> Flux </Td> </Tr> <Tr> <Td> Manganese </Td> <Td> 382,000 </Td> <Td> Alloy </Td> </Tr> <Tr> <Td> Chromium </Td> <Td> 251,000 </Td> <Td> Alloy </Td> </Tr> <Tr> <Td> Nickel </Td> <Td> 194,000 </Td> <Td> Alloy </Td> </Tr> <Tr> <Td> Molybdenum </Td> <Td> 11,800 </Td> <Td> Alloy </Td> </Tr> <Tr> <Td> Vanadium </Td> <Td> 2,500 </Td> <Td> Alloy </Td> </Tr> <Tr> <Td> Tungsten </Td> <Td> 123 </Td> <Td> Alloy </Td> </Tr> <Tr> <Th_colspan="3"> Source: US Geological Survey, Minerals Yearbooks, 2012 and 2013 . </Th> </Tr> </Table>

Where is steel made in the united states