870 NEW YOKK STATE MUSEUM 



sample, wliile coining from a quarry not used for Portland cement, 

 is evidently from similar beds, and gives a very good idea of the 

 iron, alumina and magnesia contents of these cement rocks. ■ 



Iroquois Portland cement co. This company is erecting a plant 

 near Caledonia, Livingston co. Marl and clay will be used, in 

 rotary kilns. Several companies have been formed to work de- 

 posits in this vicinity, but data concerning their plans are not 

 obtainable. 



Millen's Portland cement works. After hairing disposed of their 

 plant at Warners, Onondaga co., to the Empire Portland cement 

 CO., T. Milieu & Co. erected their present plant at Wayland, Steu- 

 ben CO., which commenced producing in October 1892. The 

 works were destroyed by fire in July 1893, but were rebuilt and 

 began shipping again in October 1893. • 



The materials used are marl and clay. The marl is obtained 

 from a swamp near the mill, about 185 acres of marsh land being 

 owned by the company. The marl deposit is about 6 feet thick. 

 Unlike the Onondaga county deposits, however, the marl bed is 

 not underlain by clay, and the latter material has to be brought 

 from a bank near Mt Morris, in Livingston county. The clay 

 deposit there worked is one of a series which occur in the terraces 

 bordering Canaseraga creek and the Genesee river, extending 

 more or less continuously from Dansville nearly to Pochester. 

 The clay for cement is worked at a point about 4 miles south of Mt 

 Morris, and is shipped over the Delaware, Lackawanna and West- 

 ern railroad to the works, a distance of about 20 miles. 



The clay is dried over steam coils, ground in a Potts disinte- 

 grator and mixed with the marl in a revolving mixer. The slurry 

 is then passed through pug mills and made into bricks. These 

 bricks are dried in tunnels, and burned in dome kilns, 16 of which 

 Ire in operation. Blake crushers, Millen crackers, and Sturte- 

 vant rock emery mills are used in the reduction of the clinker. 

 The cement is marketed as Millen's Wayland. ' ' 



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