Iron and Steel: A History

Iron and Steel: A History (HM242G)

Location: Bethlehem, PA 18015 Northampton County
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Country: United States of America
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N 40° 36.89', W 75° 22.143'

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Inscription
People have been producing iron and steel for thousands of years, heating up iron ores and limestone by burning charcoal, anthracite coal or coke (a fuel derived from coal) to create a sturdy metal. Iron-whether it is hammered ("wrought") into shape or cast into molds-tends to be either too brittle or soft. But, when treated by reducing the carbon content and adding various non-ferrous metals it is called steel.
In the 1850s, English inventory Henry Bessemer pioneered an efficient method for converting raw pig iron into steel. One of the earliest American companies to adopt this technology was right here in Bethlehem. The stone building and remains you see in the distance to the left are what's left of the double cruciform building. From 1873 to 1896, this structure housed Bethlehem Iron Company's Bessemer converters and rolling mills.
[Illustration key]
1 Charging the Iron

The converter is pivoted down and molten pig iron is poured into the opening.
2 Making Steel
A blast of air is forced through the bottom of the converter. The oxygen in the air oxidizes (burns off) almost all of the carbon, leaving steel - a metal both strong and flexible.
3 Tapping the Furnace
Once this oxidation process is complete, the converter is tapped by pivoting
the furnace and allowing the molten steel to pour out.
Details
HM NumberHM242G
Placed BySteelStacks
Marker ConditionNo reports yet
Date Added Sunday, December 24th, 2017 at 10:01am PST -08:00
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Locationbig map
UTM (WGS84 Datum)18T E 468782 N 4496066
Decimal Degrees40.61483333, -75.36905000
Degrees and Decimal MinutesN 40° 36.89', W 75° 22.143'
Degrees, Minutes and Seconds40° 36' 53.4" N, 75° 22' 8.58" W
Driving DirectionsGoogle Maps
Area Code(s)484, 610
Closest Postal AddressAt or near 711 E 1st St, Bethlehem PA 18015, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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