6o . NEW YORK STATE MUSEUM 



to $io a square. The balance of the slate output last year consisted 

 of mill stock with a total value of $3,233, against a value of $880 

 in 1909. 



STONE 



Quarry materials are among the leading items in the mineral pro- 

 duction of the State. In the aggregate their value ranks second only 

 to that of clay manufactures and the quarry industry is even more 

 widely represented throughout the various sections. They include all 

 the principal varieties of stone used for building purposes, some of 

 which are worked on a fairly extensive scale. The production of 

 building stone, however, has never approximated the requirements 

 of the local markets, and very large quantities of that material are 

 brought in from other states. The main developments in quarrying, 

 hitherto, have taken place in the branches that supply stone for en- 

 gineering work, road improvements and such purposes which entail 

 a minimum amount of labor for extraction and preparation. 



The production of stone in 1910 was valued at $6,193,252 as 

 compared with $7,061,580 in the preceding year. A decrease of 

 $868,338, or about 12 per cent, thus occurred in the industry and 

 was distributed among all the different branches. It should be 

 noted that these figures do not include slate, millstones or limestone 

 used for cement manufacture, which are reported separately. 



The output of granite fell to nearly one-half the amount reported 

 in 1909. The value of the product was $244,763 as compared with 

 $479,955 in the preceding year. Both the Adirondack quarries and 

 those in southeastern New York reported a reduced business. New 

 developments that may bring about an expansion of the industry in 

 the near future have been under way in the Adirondack region. 



Limestone showed a relatively small decrease ; the output was 

 valued at $3,245,807 against $3,300,383 in the preceding year. The 

 wide use of limestone for road work was largely responsible for 

 maintenance of the output. 



The value of the marble that was quarried last year amounted to 

 $341,880 against $380,016 in 1909. The Gouverneur and Columbia 

 county quarries both shared in the decline. 



Sandstone accounted for a value of $1,451,796 in the total as 

 compared with $1,839,798 for the preceding year. A slight gain in 

 the sandstone for building uses was more than counterbalanced by 

 the falling off in the other kinds like curb and flagstone. 



The Hudson river trap quarries were worked on about the usual 

 scale. The value of the product was $909,006 against $1,051,428 in 



