Coplay in Lehigh County, Pennsylvania — The American Northeast (Mid-Atlantic)

Lehigh Valley Rock Suitable for Hydraulic Cement

Saylor Cement Museum

Photographed By Don Morfe, July 5, 2015

1. Lehigh Valley Rock Suitable for Hydraulic Cement Marker

Inscription. In the Lehigh Valley rock suitable for hydraulic cement had been found near the present locations of Palmerton and Northampton when the Lehigh Canal was built. Mills to produce hydraulic cement were erected at these sites before the Civil War. It was against this background that David O. Saylor began his experiments for producing Portland cement. As had been true in Europe he learned that by burning certain limestone almost to a melting point, he produced the material which upon further refinement became Portland Cement.

Topics. This historical marker is listed in this topic list: Industry & Commerce.

Location. 40° 40.6′ N, 75° 29.777′ W. Marker is in Coplay, Pennsylvania, in Lehigh County. Marker is on North 2nd Street. Touch for map. Marker is at or near this postal address: 245 North 2nd Street, Coplay PA 18037, United States of America. Touch for directions.

Other nearby markers. At least 8 other markers are within 2 miles of this marker, measured as the crow flies. Coplay Made Cement: Cement Made Coplay (a few steps from this marker); Discovery of Portland Cement (a few steps from this marker); The Schoefer Kilns (within shouting distance of this marker); Saylor Park-Welcome (within shouting distance of this marker); First Cement (about 500 feet away, measured in a direct line); Fort Deshler

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(approx. 1.1 miles away); Veterans Memorial (approx. 1½ miles away); Walking Purchase (approx. 1.6 miles away). Touch for a list and map of all markers in Coplay.

Coplay Cement Kilns image. Click for full size.

Photographed By Don Morfe, July 5, 2015

2. Coplay Cement Kilns

Sign at the entrance to the Saylor Cement Museum image. Click for full size.

Photographed By Don Morfe, July 5, 2015

3. Sign at the entrance to the Saylor Cement Museum

First Cement Marker image. Click for full size.

Photographed By Don Morfe, July 5, 2015

4. First Cement Marker

Credits. This page was last revised on June 16, 2016. It was originally submitted on July 14, 2015, by Don Morfe of Baltimore, Maryland. This page has been viewed 327 times since then and 7 times this year. Photos: 1, 2, 3, 4. submitted on July 14, 2015, by Don Morfe of Baltimore, Maryland. • Bill Pfingsten was the editor who published this page.