Discovery of Portland Cement

Discovery of Portland Cement (HM1LTQ)

Location: Coplay, PA 18037 Lehigh County
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Country: United States of America
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N 40° 40.61', W 75° 29.771'

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Saylor Cement Museum

The modern cement industry began in 1756 when John Smeaton, an English engineer succeeded in producing a hydraulic cement that would harden under water. In 1824, Joseph Aspdin, an English bricklayer, produced a new cement by burning chalk and clay at much higher temperatures than those used in manufacturing hydraulic cement. On hardening it resembled the limestone taken from the Isle of Portland for building purposes, and was named Portland Cement. In this country hydraulic cement had come into use with the construction of canals.
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HM NumberHM1LTQ
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Marker ConditionNo reports yet
Date Added Tuesday, July 14th, 2015 at 6:02pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)18T E 458066 N 4503001
Decimal Degrees40.67683333, -75.49618333
Degrees and Decimal MinutesN 40° 40.61', W 75° 29.771'
Degrees, Minutes and Seconds40° 40' 36.6" N, 75° 29' 46.26" W
Driving DirectionsGoogle Maps
Area Code(s)610, 484
Closest Postal AddressAt or near Ironton Rail-Trail, Coplay PA 18037, US
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