M w *OBK NI 



• , prominent • bat has taken place recently is 



, in t i . number of plants using marl and using Lime- 



shown in the following table. 



1001 



f marl and clay 4 3 3 



limestone and day. .13 1 



[ limet md shale, 1 



nificant feature Is shown by the following table, 

 giving the ty] kiln used: 



1899 1900 1901 



f dome kilns. . 4 3 



ive plants equipped with <! Schofer 1 1 * 



(, rotary 2 5 



