Schoefer Kilns - Coplay, Pennsylvania - Signs of History on Waymarking.com

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The Schoefer Kilns

Portland cement is essentially an artificial product.  It is made by burning various minerals in a linln at intense heat to produce clinker.  The upright dome iln was the first type used in America.  an improvement was the Schoefer vertical kiln with chambers for heating, burning and cooling the material.  The kiln was in continous production except when closed for repairs.  Bituminous coal served as fule.  Coplay Cemtn Company built the kilns presered in Saylor Park in 1892-1893 and opered them until 1904.  The were replaced by rotary kiln.  One of the most important advances in cement manufacture.

Group that erected the marker: Unknown URL of a web site with more information about the history mentioned on the sign: [Web Link] Address of where the marker is located. Approximate if necessary: Saylor Park Coplay, Pennsylvania United States -

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