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6 entries match your criteria.  

 
 

Historical Markers in Coplay, Pennsylvania

 
Clickable Map of Lehigh County, Pennsylvania and Immediately Adjacent Jurisdictions image/svg+xml 2019-10-06 U.S. Census Bureau, Abe.suleiman; Lokal_Profil; HMdb.org; J.J.Prats/dc:title> https://commons.wikimedia.org/wiki/File:Usa_counties_large.svg Lehigh County, PA (124) Berks County, PA (258) Bucks County, PA (250) Carbon County, PA (75) Montgomery County, PA (237) Northampton County, PA (242) Schuylkill County, PA (70)  LehighCounty(124) Lehigh County (124)  BerksCounty(258) Berks County (258)  BucksCounty(250) Bucks County (250)  CarbonCounty(75) Carbon County (75)  MontgomeryCounty(237) Montgomery County (237)  NorthamptonCounty(242) Northampton County (242)  SchuylkillCounty(70) Schuylkill County (70)
Allentown is the county seat for Lehigh County
Coplay is in Lehigh County
      Lehigh County (124)  
ADJACENT TO LEHIGH COUNTY
      Berks County (258)  
      Bucks County (250)  
      Carbon County (75)  
      Montgomery County (237)  
      Northampton County (242)  
      Schuylkill County (70)  
 
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1Pennsylvania (Lehigh County), Coplay — Coplay Made Cement: Cement Made CoplaySaylor Cement Museum — 1894-1904 —
In 1900, the scene before you was a smelly, dirty, noisy inferno. Trains roared in, carrying coal from the nearby northern anthracite fields and local cement rock, a form of limestone. Day and night smoke and dust belched from the towering kilns. . . . Map (db m85452) HM
2Pennsylvania (Lehigh County), Coplay — Discovery of Portland CementSaylor 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 . . . Map (db m85450) HM
3Pennsylvania (Lehigh County), Coplay — First Cement
David O. Saylor was the first to make portland cement in the United States, at Coplay in 1871. First use of the rotary kiln to manufacture cement on a commercial scale also was here Nov. 8, 1889.Map (db m85418) HM
4Pennsylvania (Lehigh County), Coplay — Lehigh Valley Rock Suitable for Hydraulic CementSaylor Cement Museum
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 . . . Map (db m85451) HM
5Pennsylvania (Lehigh County), Coplay — Saylor Park-WelcomeDavid O. Saylor-The Father of Portland Cement Industry in America — 1827-1884 —
David Oliver Saylor was born on October 20, 1827 in Hanover Township, Lehigh County. In 1866, he organized the Coplay Cement Company for the manufacture of natural cement. He soon began experiments to produce Portland cement in 1871. He was granted . . . Map (db m85447) HM
6Pennsylvania (Lehigh County), Coplay — The Schoefer KilnsSaylor Cement Museum
Portland cement is essentially an artificial product. It is made by burning various minerals in a kiln at intensive heat to produce clinker. The upright dome kiln was the first type used in America. An improvement was the Schoefer vertical kiln with . . . Map (db m85448) HM
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Sep. 28, 2022