34 



NEW YORK STATE MUSEUM 



sold in 191 1. The value of the rock was $240,784 against $202,984 

 for the preceding year. The quantity ground for land plaster /was 

 8213 short tons with a value of $17,779; as compared with 9959 

 short tons valued at $18,508 in 191 1. The remainder represented 

 approximately the amount calcined for stucco and wall plaster, of 

 which the product amounted to 267,889 short tons valued at 

 $928,282. The corresponding total in the preceding year was 

 262,249 short tons with a value of $871,106. The total value of 

 the marketable products for the year thus amounted to $1,186,845 

 as compared with $1,092,598 in 191 1. 



Production of gypsum 



MATERIAL 



1 



911 



19 



12 



SHORT 

 TONS 



VALUE 



SHORT 

 TONS 



VALUE 



Total output, crude 



Sold crude 



446 794 

 144 035 



9 959 

 262 249 





506 274 

 178 499 



8 213 



267 889 





$202 984 



18 508 



87I 106 



$240 784 



17 779 



928 282 



Ground for land plaster 



Wall plaster, etc. made 



Total 





$1 O92 598 





$1 186 845 







The production of crude rock was contributed by relatively 

 few companies, about ten in all, and was divided among the four 

 counties of Onondaga, Monroe, Genesee and Erie. While in 

 earlier years most of the output was made in the eastern section 

 in Madison, Onondaga and Cayuga counties, by far the greater 

 proportion now comes from the western deposits which are the 

 basis of a prosperous calcining industry. The mines of that section 

 rank with the largest and best equipped of their kind in the country. 



In Onondaga county the output has fallen off in recent years, 

 owing to the decline in the land plaster business, to which there 

 has succeeded no commensurate development of other branches. 

 Only one or two quarries are now operated out of the number that 

 have been opened along the extensive outcrop of the beds. The 

 present supply is derived from the vicinity of Lyndon, and mainly 

 from the Severance quarry which has been worked by the Fayette- 

 ville Gypsum Co., for supply of rock to calcined-plaster works in 

 New York. The rest of the output from this section was used 

 locally by the land plaster mills at Fayetteville and Jamesville. 



