rl58 NEW YORK STATE MUSEUM 



|1 to |1.50 a yard (delivered) is obtained. Should a contractor 

 wish to do his own quarrying a royalty of 2oc a yard is charged. 

 Selected and roughly trimmed stone brings |2 a yard. This 

 quarry got a fair share of the railroad business but has been 

 practically idle since that time. 



Dunwoodie, Westchester co. Hacketfs quarries (14). Worked 

 and owned by Hackett Bros, of Dunwoodie. Located at the 

 intersection of Central and Midland avenues, a mile or so north- 

 east of Dunwoodie station. A small opening, with one derrick,, 

 is in the southwest angle formed by the intersection of the two- 

 avenues mentioned; the larger and older quarries are in the 

 northwest angle. The quarry now worked has been opened for 

 about 300 feet along the strike and about 80 feet across the 

 strike. The foliation planes dip and strike n. 30° e., 85° w. One 

 set of almost horizontal joints divides the rock into '' beds " 

 about 4 feet thick, while the set of joints parallel to the folia- 

 tion are about 2 to 4 feet apart; and a third less important and 

 regular set of joints strikes and dips n. 64° w., 75° w. Most of 

 the quarry is above the ground level of its front. Stone from 

 this quarry has been used in St Joseph's seminary, Dunwoodie, 

 Seton hospital (Spuyten Duyvil), St John's hospital (Yonkers) 

 and St Joseph's hospital (Yonkers), and in much railroad work, 

 as well as in several Y^onkers schoolhouses. In 1898 Hackett 

 supplied some polished columns from this quarry for the county 

 jail at White Plains. The polishing was done in Nevr Y'ork city, 

 and the colimins are good samples of the best grade of the 

 Yonkers gneiss. Four derricks (one run by steam, three by 

 hors'e power) and one boiler are on the ground. 



Mr Hackett estimates the annual product at 500 cubic yards 

 macadam stone, 1000 cubic yards foundation stone and 100 cubic 

 yards dressed stone. The main opening is shown on pi. 49. 



CaliilVs quarries (15). Owned and operated by Dennis Cahill 

 of Y^onkers. Situated on Midland avenue, several hundred yards 

 east of Central avenue. The smallest and newest opening, 

 at which a boiler is located, on the south side of Midland avenue, 

 will probably be the principal quarry of the future. The 



