Coplay Cement Company Kilns, also known as the Saylor Park Industrial Museum, is an open-air historic site located at Coplay, Pennsylvania in

Lehigh County, Pennsylvania Lehigh County (Pennsylvania Dutch: ''Lechaa Kaundi'') is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the county's population was 374,557.

. The nine

kiln A kiln is a thermally insulated chamber, a type of oven, that produces temperatures sufficient to complete some process, such as hardening, drying, or chemical changes. Kilns have been used for millennia to turn objects made from clay int ...

s were built in 1892-1893, and used for the production of

Portland cement Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout. It was developed from other types of hydraulic lime in England in the early 19th ...

. They are constructed of locally produced red brick, and are known as Schoefer vertical kilns. They were shut down in 1904. The Coplay Cement Company donated the kilns and surrounding land to Lehigh County in 1975, for a cement industry museum. It is operated as a partnership between the County of Lehigh, which owns and maintains the site, and the Lehigh County Historical Society, which provides educational services. ''Note:'' This includes and It was added to the

National Register of Historic Places The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic ...

in 1980. The Saylor Cement Museum honors David Saylor (1827-1884), the father of the American Portland cement industry, and the people who built this industry into one of the most important in the Lehigh Valley and the nation. Lehigh County was a natural spot for cement production. Cement is made from rocks containing lime, silica, and alumina; Lehigh County limestone “cement rock” contains all three ingredients. In 1866 David O. Saylor helped found Coplay Cement Company. In 1871, he received the first American patent for Portland cement, which is much stronger than the natural cement that had previously been produced in this country. Saylor's Portland cement built bridges, docks, jetties, roads, aqueducts, subways, and skyscrapers. By 1900 the Lehigh Valley made 72% of Portland cement produced in this country.Saylor Cement Museum Brochure. The first kiln at the Coplay Cement Company was a dome kiln. Dome kilns were inefficient; they had to shut down often. In 1893 Coplay Cement built Mill B, containing the Schoefer kilns standing today. Originally enclosed in a large building, Schoefer kilns could run continuously. Soon, however, the even more efficient rotary kilns came into use. Mill B's outdated Schoefer kilns shut down in 1904, and Coplay Cement later used Mill B's buildings for storage.

References

External links

*
Saylor Park Industrial Museum websiteThe Saylor Kilns
at the

Historical Marker Database The Historical Marker Database (HMdb.org) is an online database that documents locations of numerous historical markers in the United States as well as other countries. The database was launched in 2006 by computer programmer J. J. Prats. The HMd ...

{{Lehigh Valley Industrial buildings and structures on the National Register of Historic Places in Pennsylvania Historic American Engineering Record in Pennsylvania Industrial buildings completed in 1893 Museums in Lehigh County, Pennsylvania Industry museums in Pennsylvania National Register of Historic Places in Lehigh County, Pennsylvania