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

Saving the Kilns

 
 
Saving the Kilns Marker image. Click for full size.
Photographed by William Fischer, Jr., March 8, 2025
1. Saving the Kilns Marker
Inscription.
"The public ...wants heritage to be more active. They don't want
to see a plaque in a green park. They'd rather see more tangible
evidence of the past."

Professor Frank Matero
University of Pennsylvania

STABILIZATION
In April, 2015, the kilns' status was assessed and a preservation plan for their long-term stewardship was created. The conditions assessment identified baseline needs for stabilization, and addressed needs that extended to all the kilns, as well as individual kiln concerns. One of the kilns was fully restored as part of this process.

These kilns, which were originally 120 feet in height, still stand despite years of weathering and attempts to deconstruct them. The preservation plan has been completed, but there are still many actions that must be taken. To preserve these kilns for future generations, additional planning and funding, and greater public appreciation of their importance, will be needed.

These kilns are an iconic feature of the entire Lehigh Valley cement district, as well as central to the history and community culture of Coplay. Their national significance is recognized by being listed on the National Register of Historic Places. When they were used to make portland cement, the kilns were housed in a building, with their tops towering
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forty feet above the roof. But the kilns were shut down in 1904 and the building was removed in 1951, which left them exposed to the elements they were never meant to withstand. Decades of rain, snow, and wind have allowed water to infiltrate the kilns. This has caused mortar to loosen, bricks to crack and fall, and allowed vegetation to grow, which further accelerates the deterioration.
 
Erected by Delaware & Lehigh National Heritage Corridor, Lehigh Valley Greenways, National Park Service, PA DCNR, and Lehigh County.
 
Topics and series. This historical marker is listed in these topic lists: Charity & Public WorkIndustry & Commerce. In addition, it is included in the National Register of Historic Places (NRHP) series list. A significant historical month for this entry is April 2015.
 
Location. 40° 40.59′ N, 75° 29.77′ W. Marker is in Coplay, Pennsylvania, in Lehigh County. It can be reached from North 2nd Street. Marker is in Saylor Park, immediately south of the kilns. Touch for map. Marker is at or near this postal address: 299 North 2nd Street, Coplay PA 18037, United States of America. Touch for directions.

Regionally, this marker is in Southeast Pennsylvania and in Lehigh Valley. It is also in the American Northeast and in the Mid-Atlantic. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once the Haudenosaunee (Iroquois) Confederacy and also one of the original Thirteen Colonies.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Last of Their Kind (a few steps from this marker); a different marker also named Coplay Made Cement: Cement Made Coplay (a few steps from this marker); Saylor Cement Kiln West 1 Preservation Project
Saving the Kilns Marker image. Click for full size.
Photographed by William Fischer, Jr., March 8, 2025
2. Saving the Kilns Marker
The restored kiln is visible
(a few steps from this marker); Discovery of Portland Cement (within shouting distance of this marker); Saylor Park-Welcome (within shouting distance of this marker); Lehigh Valley Rock Suitable for Hydraulic Cement (within shouting distance of this marker); The Schoefer Kilns (within shouting distance of this marker); Safety Follows Wisdom (within shouting distance of this marker). Touch for a list and map of all markers in Coplay.
 
Another marker is no longer nearby. Coplay Made Cement: Cement Made Coplay (was a few steps from this marker but has been confirmed missing).
 
Regarding Saving the Kilns. National Register Statement of Significance (1980) excerpt:

From 1893 to 1904 those nine Schoefer vertical kilns, constructed of locally made red brick, were utilized by the Coplay Cement Company for the production of portland cement. Not only do these structures represent the transition in kiln technology from the bottle or dome kiln to the rotary kiln, but they stand as a fitting monument to the pioneering role of David O. Saylor, the Coplay Cement Company, and the Lehigh Valley area in the development
Kiln Damage Needing Preservation image. Click for full size.
Photographed by William Fischer, Jr., March 8, 2025
3. Kiln Damage Needing Preservation
of the American portland cement industry. Recently restored and adapted for use as a museum, these kilns are the oldest extant structures associated with the Coplay Cement Company and are probably the only kilns of their type still standing.
 
Also see . . .  Coplay Cement Company Kilns National Register Nomination Form. (Submitted on March 9, 2025, by William Fischer, Jr. of Reynoldsburg, Ohio.)
 
Restored Kiln on Right image. Click for full size.
Photographed by William Fischer, Jr., March 8, 2025
4. Restored Kiln on Right
 
 
Credits. This page was last revised on March 9, 2025. It was originally submitted on March 9, 2025, by William Fischer, Jr. of Reynoldsburg, Ohio. This page has been viewed 122 times since then and 16 times this year. Photos:   1, 2, 3, 4. submitted on March 9, 2025, by William Fischer, Jr. of Reynoldsburg, Ohio.
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Jun. 27, 2026