M \v Y0K1 ' W 81 I'M 



operation. The final grinding was accomplished with David- 



- 



manufactured by this company was marked as 



ad * Flint w brands. The Intendent of the 



that the diffi between the two brands lies 



in the fact that the Empire was made from specially selected 



hi clinker, while in the of Flint no selection was made, 



whole product of the kiln being allowed to go to the grinding 



-es of the Empire brand follow: 1 is quoted by Cum- 

 minga, 1 2 by Lewis, 8 while 3 was furnished directly by the com- 

 pany: 



12 3 



SiO, 20.8 22.04 21.93 



AltOt 7.39 6.45 8.2 



Fe t O, 2.61 3.41 3.7 



CaO 64 60.92 61.83 



MgO 3.53 1.43 



Alkalis 84 



SOy 2.73 1.18 



ring 1901 this plant was entirely remodeled, the new ma- 

 chinery being installed by the Bonnot co., of Canton (0.). Five 

 60 foot rotary kilns are now in use, each kiln being equipped 

 with a separate feed pump. The materials are prepared for burn- 

 through pug mills, emery mills, settling vats, tube 

 mill? and storage tank?, from which last the slurry goes to the 

 rotaries. The fuel used is coal, powdered in a Raymond pul- 

 A detailed description of the new plant will be given, 

 in i ar future, in a technical journal. 



Glens Falls Portland cement co. In ISO 3 this company com- 



1 I the erection of a plant at Glens Falls, Warren co., and 



put on the market in 1894, as the Iron Clad 



Bis shaft kilns of the Schofer type were installed, the 



— — ^ , 



1, p. 30. 

 f J'J. 



