Discovery of Portland Cement

Discovery of Portland Cement (HM1LTQ)

Location: Coplay, PA 18037 Lehigh County
Buy Pennsylvania State flags at!
Country: United States of America
Buy United States of America flags at!

N 40° 40.61', W 75° 29.771'

  • 0 check ins
  • 0 favorites

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.
Marker ConditionNo reports yet
Date Added Tuesday, July 14th, 2015 at 6:02pm PDT -07:00
Sorry, but we don't have a picture of this historical marker yet. If you have a picture, please share it with us. It's simple to do. 1) Become a member. 2) Adopt this historical marker listing. 3) Upload the picture.
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
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

Is this marker missing? Are the coordinates wrong? Do you have additional information that you would like to share with us? If so, check in.

Check Ins  check in   |    all

Have you seen this marker? If so, check in and tell us about it.

Comments 0 comments

Maintenance Issues
  1. Is this marker part of a series?
  2. What historical period does the marker represent?
  3. What historical place does the marker represent?
  4. What type of marker is it?
  5. What class is the marker?
  6. What style is the marker?
  7. Does the marker have a number?
  8. What year was the marker erected?
  9. Who or what organization placed the marker?
  10. This marker needs at least one picture.
  11. Can this marker be seen from the road?
  12. Is the marker in the median?