K STATE MUSEUM 



Catskill cement co. Tin Portland plant of the Catskill cement 



acting, Greene co., was erected during 



re commenced in July 1900. The materials 



J are clay, from the river terraces, and limestone of Lower 



Helderberg age. A bucket cableway is used to transport the raw 



•erials from the quarry and daybank to the works. Average 



ana^ materials, furnished by the company, follow: 



Limestone CUy 



per cent per er nt 



1.54 61.92 



O s .39 16.58 



,0| 1.04 7.84 



53.87 2.01 



MgO 52 1.58 



Alkalis 3.61 



BO, tr. 



The limestone is dried and then reduced in a Krupp ball mill. 



Tip seed through a roll disintegrator and is dried. The 



Ialfl are, at this stage, mixed dry; and the mixing and re- 



duction completed in Krupp tube mills. Two rotary kilns are in 



ojM ion, having a total capacity of about 300 barrels a day. 



The clinker is crushed in Krupp ball mills, and receives its final 



action in Krupp tube mills. The cement is marketed as the 



" Catskill " brand. Analyses of the finished product follow. All 



re furnished by the company, 1 and 2 having been made in 



their laboratory j while 3 was made by H. E. Keifer Ph.D. 



12 3 



22.48 21.94 23.44 



Al,<>, 6.52 6.02 6.35 



Fe,0, 4.46 4.38 3.99 



• 62.93 64.62 63.21 



fi 1.48 1.25 1.15 



3 1.3 1.12 1.22 



