BLUESTONE AND OTHER SANDSTONES 



29 



The next ledge to the west is known as "High bank." Only 

 four quarries are in active operation, though this ledge and the 

 one below it have been extensively opened for some distance. 

 The bed of stone averages 6 feet thick, with various thicknesses 

 and kinds of top. The stone is fine grained, of dark blue color, 

 and with numerous reeds. Side seams and heads are both pres- 

 ent at varying distances apart. The dip of the bed is the same 

 as that of the other ledges south and west. The bed has rough 

 streaks through it and cross bedding is seen. Stone and rock 

 are interbedded in spots. The lifts vary from 6 inches to 3 feet. 

 The top and bottom lifts are hard, while the middle of the bed is 

 softer. The product includes all the varieties of marketable 

 stone and is sold to James Maxwell at Glasco. 



The following are the operators. 



Conlon Bros., Cockburn. Six to eight men are employed 

 throughout the year. A siphon handles all the water. 



Hackett & McCormick, Highwoods. Four to five men are 

 employed throughout the year. 



Hackett Bros., Cockburn. Three men are employed throughout 

 the year. 



Jake Connor, Highwoods. One man works intermittently at 

 this southern end of the opening. 



Three quarters of a mile west of the "High bank" ledge a num- 

 ber of quarries have been opened. It is not possible to say 

 whether these quarries are on the same ledge, as there is no 

 continuous opening. 



Carle & York, Highwoods. This quarry is situated 1£ miles 

 southwest of Highwoods and more men are employed than in 

 any other quarry in Ulster county. The quarry has not been 

 opened on the outcrop of the ledge, which is the usual rule. The 

 opening is in the shape of a rectangular pit in the middle of a 

 level field. The ledge is worked on three sides of the pit, the 

 perimeter of the face being 425 feet. The dip of the bed is gentle ' 

 and to the west mainly. The water collects in the western end, 

 and is pumped out by a rotary pump driven by steam. The top 

 is hardpan 3 to 4 feet thick and is troublesome to strip. It is 

 blown off as much as possible with powder, the balance being 



