THE MINING AND QUARRY INDUSTRY I906 27 



with mines at South Bay, near Whitehall, Washington co. The 

 plant of the Ticonderoga Graphite Co., at Rock pond, was leased 

 to Pettinos Bros., of Bethlehem, Pa., who operated it for only a 

 brief period. The graphite rock was found to be cut out by a fault. 

 The Adirondack Mining & IMilling Co. was active only for a period 

 of three weeks, and will not resume operations during the present 

 year. 



The Glens Falls Graphite Co. has been incorporated for the 

 purpr^se of working a graphite deposit situated near Conklingville, 

 8 miles west of Hadley, Saratoga co. The deposit is described as 

 a quartzose schist with a thickness of 50 feet where opened. The 

 erection of a mill is in progress, which it is expected will be com- 

 pleted early in the year. 



The Empire Graphite Co. is engaged in developing a property 

 near Greenfield, Saratoga co. 



Some prospecting has been done in the vicinity of Graphite with 

 a view to locating a possible extension of the bed worked by the 

 American Graphite Co. Drill tests have indicated that the quartzite 

 underlies a considerable area to the west of that company's prop- 

 erty. In three holes which were put down the graphitic bed was 

 found to be from 19 to 22 feet thick and was encountered at 50 to 75 

 feet depth. 



GYPSUM 



The industries connected with the production of gypsum and its 

 manufacture into commercial products have progressed rapidly dur- 

 ing recent years. The advance has been due to the utilization of the 

 material for wall plaster and plaster of paris, a branch of the in- 

 dustry that has been developed in New York State practically since 

 1900. Previous to that year the output of crude gypsum averaged 

 less than 50,000 tons annually and was used almost wholly for 

 agricultural purposes. Though the deposits of the State do not 

 yield, as a rule, a material oi high degree of purity, it has been 

 found to be well adapted for making the usual grades of calcined 

 plasters. 



The quarries of gypsum are situated along a belt extending west 

 from Madison county through Onondaga, Cayuga, Seneca, Ontario, 

 Monroe, Genesee and Erie counties. The gypsum is found in one 

 or more beds associated with the Camillus shale of the Salina group. 

 The beds range up to 30 feet or more in thickness. They are worked 

 only along the outcrop, generally by open pit methods, though 

 underground mining is practised to some extent in the western 



