THE MINING AND QUARRY INDUSTRY I915 



23 



FIREPR(X)FING 



Fireproofing was produced to the value of $177,844 by seven 

 companies as compared with $245,034 for 1914. There was no 

 change in the number of producers. The output includes those 

 articles known as hollow blocks and terra cotta lumber, exclusive 

 of common hollow brick. Owing to the large size as compared 

 with common hollow brick, there has been some difficulty in using 

 the ordinary soft plastic clays of the State for the production of 

 fireproofing. It is only those operators who have used a com- 

 bination of clay and shale or grog that have been able to produce 

 material which would compare favorably with that of the better 

 known grades from other states. At present the production is only 

 that necessary to supply the local demand. 



PAVING BRICK 



During the last season a considerable decrease took place in the 

 production of paving brick not only in this State but throughout 

 the United States. In general this was caused by a small demand. 

 Many roads are being built of other materials, but with the inten- 

 tion of facing in the future with brick. This is especially true of 

 the long trunk lines. In New York State financial troubles have 

 been the main cause of the small production. Several plants have 

 had to close temporarily on this account and one on account of a 

 poor grade of crude material with high transportation costs. The 

 total production for last year was 26,154,000 with a value of 

 $382,502 as compared with 46,696,000 and a value of $680,226 for 

 1914. The following table gives the production in New" York 

 State during the last ten years : 



Production of paving brick in New York 



YEAR 



QUANTITY 



NUMBER 



OF 

 PLANTS 



1906 

 1907 

 1908 

 1909 

 I9IO 

 I9II 

 I912 



I913 

 I914 



I915 



11 472 000 



12 296 000 

 14 570 000 

 12 278 000 

 19 762 000 

 23 993 000 

 18 249 000 



35 666 000 

 46 696 000 

 26 154 000 



