THE MIXING AND QUARRY INDUSTRY I907 59 



value was due more to the relatively large quantity of red slate 

 produced than to higher market prices. 



STONE 



The quarry industries of New York are of large and growing 

 importance. There are few other states that possess such a 

 variety of geological formations with so many different rock 

 members. The resources afford almost every kind of material 

 used for building and construction purposes and many of the 

 ornamental stones. Still the local product falls short of meeting 

 the requirements, specially for building and decorative stones, and 

 large quantities are brought in annually from other states or are 

 imported from foreign countries. 



The statistics and notes incorporated in the following pages 

 relate to the different quarry industries of the State, except those 

 of slate and millstones, which are treated under their own titles 

 elsewhere in this report. 



Production of stone 



The value of the quarry materials produced in 1907 amounted 

 in the aggregate to $7,890,327. The total for the preceding year 

 was $6,504,165, showing a gain of $1,386,162, or about 20 per cent. 

 Nearly one half of the amount consisted of limestones which 

 accounted for a total of $3,182,447 as compared with $2,963,829 

 in 1906. The sandstone quarried was valued at $1,998,417 

 against $1,976,829 in the preceding year, the larger part contrib- 

 uted by the companies engaged in the bluestone trade. The 

 marble quarries reported the largest increase for the year, the 

 production having a value of $1,571,936, as compared with $460,- 

 915 in 1906. The output of granite showed a small falling off, 

 with a total value of $195,900 in 1907 and $255,189 in the preced- 

 ing year. 



Classified as to uses, crushed stone was the largest item in the 

 total and represented a value of $2,812,998, an increase of nearly 

 $400,000 for the year. The use of crushed stone in road im- 

 provement work and for making concrete has been the chief 

 factor in the development of this branch of the industry which 

 has nearly doubled in importance within the last three years. 

 The quantity of crushed stone made last year was approximately 

 3,319,706 cubic yards, as compared with 3,132,460 cubic yards in 

 1906. The quantity reported as used for road metal was 



