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NEW YORK STATE MUSEUM 



and concrete. It possesses qualities of strength and durability 

 which place it first among the varieties of stone used for these 

 purposes. The somber color and the difficulty of dressing the 

 stone limits its employment for building work. It is used to 

 some extent for paving blocks. 



Rockland county produces most of the trap at the present time. 

 The quarries are at Rockland lake, Mt Joy, Haverstraw and 

 Nyack and are worked in connection with crushing plants. The 

 stone is supplied to the cities and towns along the river, New 

 York affording the largest market. The output of the county 

 had a value of $874,527 in 1907 as compared with $780,703 in the 

 preceding year. 



The quarries at Port Richmond, Richmond co., were the only 

 ones worked in the southeastern part of the State, aside from 

 those mentioned. 



The remainder of the output came from Greenfield and 

 Northumberland, Saratoga co., and Fort Ann, Washington co. 



The aggregate value of the production last year was $941,627, 

 as compared with a value of $847,403 in 1906. Crushed stone was 

 the chief item in the total and amounted to 982,454 cubic yards, 

 valued at $939,027 against 851,293 cubic yards valued at $780,103 

 in the preceding year. A total of 362,904 cubic yards with a 

 value of $349,485 was reported as sold for road material, but the 

 actual quantity thus used was probably somewhat greater. 



Production of trap 



1906 



1907 



MATERIAL ' P h' 



yards 



Value 



Cubic 

 yards 



Value 



Crushed stone 851 293 



Paving blocks, etc . 



$780 103 

 67 300 



982 454 $939 027 

 i 2 600 



Total 



$847 403 



, , 



$941 627 



TALC 

 The talc industry of St Lawrence county experienced a pros- 

 perous year, with demand and prices above the average for some 

 time past. The production showed a small falling off and 



