DESCRIPTIVE NOTES OF QUARRY DISTRICTS AND QUARRIES 23 I 



Peekskill, Westchester County. — The granite quarry two 

 miles north-west of Peekskill on the bank of the river is 

 idle. 



lona Island, Rockland County. — There is a large quarry on 

 lona Island, owned by Daniel E. Donovan, whence stone 

 is obtained for heavy masonry and for macadam material. 

 A large amount is sold annually for road-making. Some 

 of the stone used in the New York and Brooklyn bridge 

 came from this quarry. 



West Point, Orange County. — West of the military acad- 

 emy buildings a granitoid gneiss has been quarried at 

 several points for construction of government buildings. 

 The stone occurs in thick beds and the solid, outcropping 

 ledges indicate the durability of the stone, where exposed to 

 the weather. The library building, the old riding academy, 

 and three of the professorial residences and the long lines 

 of retaining walls are constructed of the stone taken from 

 these quarries. 



Storm-king Mountain. — The granite quarry at the south- 

 eastern face of Storm-king mountain, near the West Shore 

 railroad track, and a half mile south of Cornwall station, 

 has not been in operation for several years. 



Break-n€ck Mountain Quarry — Granite has been quarried 

 at several points on the south-west side of this mountain 

 and north of Cold Spring. The quarry sites extend nearly 

 a mile back from the river; and the work has been to detach 

 blocks of large size, by blasting, and then to break them up 

 into building stones or paving blocks as called for. The 

 Hudson River Broken Stone and Supply Company is now 

 working on the lands of Lewis J. Bailey, producing stone 

 for railroad track ballast. 



Mount Adam, Warwick, Orange County A granite is 



quarried at a locality, opened in 1889, on the north end of 

 Mount Adam. It is owned and worked by the Mount Adam 

 Quarry Company, of Middletown. 

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