THE MINING AND QUARRY INDUSTRY I9IO 



63 



Round Island, Rockland county; and Pine Island, Orange county. 

 The Storm King granite, below Cornwall, is used for crushed stone. 

 The granite trade last year showed a marked recession, the produc- 

 tion falling below that of any recent year excepting 1907. The de- 

 crease was mainly in the crushed stone and paving block industries, 

 though the output of granite for building and monumental work did 

 not attain the usual proportions. The total production was valued 

 at $244,763 against $479,955 in 1909 and $367,564 in 1908. Build- 

 ing stone, rough and dressed, contributed $40,911 to the total as 

 compared with $35,019 in the preceding year and $71,122 in 1908. 

 The output of crushed stone amounted in value to $91,988 against 

 $182,029; monumental stone to $12,989 against $33,818; rubble and 

 riprap to $20,272 against $12,737; ^^^^ paving blocks and other kinds 

 to $78,603 against $216,352 in 1909. 



Production of granite 



1908 



1909 



1910 



Building stone, 

 Monumental . . 

 Crushed stone . 

 Rubble, riprap 

 Other kinds o. . 



Total 



$71 122 



27 585 

 152 783 



15 351 

 100 723 



$35 019 

 33 818 



182 029 

 12 737 



216 352 



$40 911 

 12 989 

 91 988 

 20 272 

 78 603 



I367 564 



S479 955 



$244 763 



a Includes curbing, paving blocks and minor uses. 



LIMESTONE 



The stone classified under this heading consists for the most part 

 of the common grades of limestone and dolo nite such as are char- 

 acterized by a compact granular or finely crystalline texture and are 

 lacking in ornamental qualities. 



A smaller part is represented by crystalline limestone and by the 

 waste product of marble quarrying which is sometimes employed for 

 crushed stone, lime making or flux. Limestone used for the manu- 

 facture of Portland and natural cement is, however, excluded from 

 the tabulations so as to avoid any duplication of the statistics. 



Limestones are widely distributed in the State ; the only region 

 which is not well supplied with this stone being the southern part 

 where the prevailing formations are sandstones of Devonic age. In 

 the western and central parts ihc ( )niin(laga and O^bleskill Hmo- 



