284 CEMENT MATERIALS AND INDUSTRY. [bull. 243. 
PORTLAND-CEMENT INDUSTRY IN PENNSYLVANIA. 
The State of Pennsylvania now produces about half of the total i 
United States output of Portland cement. This enormous production., 
amounting to about 10,000,000 barrels annually, comes almost entirely 
from plants located in the so-called Lehigh district, in Berks, Lehigh, 
and Northampton counties. Seventeen plants are located in the Penn- 
sylvania portion of this important district, while the two remaining 
Portland-cement plants in Pennsylvania are located in the extreme 
western part of the State. 
The following list of Portland-cement plants operating in Pennsyl- 
vania in 1904 has been corrected by Mr. R. W. Lesley, president of tht> 
American Cement Company, to whom the writer's acknowledgment*: 
are due for this and other courtesies. 
Name and location of Portland-cement plants in Pennsylvania, 1904- 
American Cement Company of Pennsylvania Egypt. 
Atlas Portland Cement Company Northampton and Coplay 
Bath Portland Cement Company Bath. 
Bonneville Portland Cement Company Siegfried. 
Central Cement Company « Egypt. 
Clinton Cement Company Pittsburg. 
Coplay Cement Manufacturing Company Coplay. 
Crescent Portland Cement Company Wampum. 
Dexter Portland Cement Company Nazareth. 
Lawrence Cement Company of Pennsylvania Siegfried. 
Lehigh Portland Cement Company Ormrod, West Coplay. 
Martins Creek Portland Cement Company b Martins Creek. 
Nazareth Cement Company Nazareth. 
Northampton Portland Cement Company Stockertown. 
Penn- Allen Portland Cement Company Penn-Allen. 
Pennsylvania Cement Company Bath. 
Phoenix Cement Company Nazareth. 
Reading Cement Company Molltown. 
Whitehall Portland Cement Company Cementon. 
In describing the Portland-cement industry of the State, the Lehig] 
district will first be discussed in considerable detail, after which tin 
isolated plants in western Pennsylvania will be briefly describe^ 
(p. 21)1). 
LEHIGH DISTRICT. 
The following description of the cement- rock deposits and cemen 
industry in the Lehigh district is based largely upon held work by th i 
writer during the early summer of 1903. Acknowledgments are du 
to the managers and chemists of various cement plants in the Lehig J 
• list iict, who have aided the writer greatly in this work. Use has als< J 
a Owned by same interest as American Cement Company of Pennsylvania. 
''Owned by same interest as Alpha Portland Cement Company. (See New Jersey, p. 243.) 
