G96 KEW rOBX STATE MUSEUM 



! wording to Lewis 1 tlio principal Portland cement, plants in 

 ration in the United States in 1S97 together with their dates 

 of establishment were: 



m pan y Brand Locality Established 



Coplay eem. 00 Saviors, Commercial.. Coplay Pa 1875 



J. K. Shinn ft Bro Wampum Wampum Pa 1876 



Milieu A Bona Millen South Bend 1ml... is;: 



Millen A Bona Millen Wayland X. V.... 1891 



Amor. (-•♦•m. eo Giant and Egypt.... Egypt Pa 384 



Amor, cam, oo Giant Jordan N. Y 1891 



Emp. port. cem. co Empire Warner X. Y. ... 1886 



Atlas earn, oo Atlas Coplay Pa 1889 



Alpha port eem. co Alpha Whitaker N. J. .. 1891, a'94 



Weot port cem. oo Western Yankton S. D. ... 1890 



Buckeye c.'iu. c«) Buckeye Uellefontaine 0... 1892 



Sandusky eem. co Medusa Sandusky 1*!W 



Diam. port. eem. co Diamond Middlebranch 0.. 1893, a '97 



Bonneville eem. co Star Siegfrieds Br. Pa. 1894 



Vulcanite cem. co Vulcanite Vulcanite N. J.... 1896 



Glens Falls cem. co Iron (lad Glens Falls N. Y. . 1895 



Bronson port. cem. co.... Branson Branson .Mich. ... 1897 



White Cliffe port. cem. co.. Setter Whitecliff Ark... 1897 



^^^— < 



a Rebuilt. 



Additional works have been started at Coldwater and Union 

 City (Mich.), Smiths landing (N. Y.), La Salle (111.), Litchfield 

 (Ivy.), and besides these there are several smaller ones. Accord- 

 ing to Mr Lewis the total capacity of the American works is 

 about 3,000,000 barrels, of which 70$ comes from the Lehigh 

 valley region of western Pennsylvania and eastern New Jersey. 



Composition of American Portland cements 



The American Portland cements are made from a variety of 

 materials which resemble each other chemically rather than geo- 

 logically. As the cement is made from artificial mixtures, it is 

 frequently possible to use many different grades of limestone and 

 day-bearing rocks. Though Portland cement is made at many 

 places and from material of widely different character, Portland 

 cement materials are not so very numerous. The alumina and 

 silica are commonly supplied by clay, sometimes shale; and the 

 lime carbonate from limestone or marl. 



ling to the United States geological survey, 2 the number 

 of factories using limestone or marl is as follow-. 



»Min. ind. 6: 91 



• 20th an. rep't. U. S. geol. sur. pt 6, p 545. 



