32 NEW YORK STATE MUSEUM 



output was 262,486 short tons in 1906, 191,860 short tons in 1905, 

 and 151,445 short tons in 1904. 



The growth of the industry suffered only a temporar}^ check, 

 and its prosperity in tlie future seems assured by reason of the 

 inexhaustible character of the local deposits and their exceptional 

 situation with regard to the principal markets. Within the last 

 10 years the State has gained a leading position in the trade, the 

 production having increased during that period from an average 

 of about 30,000 tons annually to the present total of over 300,000 

 tons. 



Of the quantity of crude rock that was reported as mined or 

 quarried last year about 65 per cent was converted into calcined 

 plasters by the producing companies. Their figures showed a total 

 of 160,930 short tons of plaster of paris, wall plaster, etc. valued 

 at $574,757 as compared with a total output of 145,684 tons valued 

 at $533,265 in 1907. The amount of ground gypsum or land 

 plaster made was 5712 short tons valued at $14,255 against 15,441 

 short tons valued at $38,859 in 1907. The portion sold in crude 

 condition to cement manufacturers and for other purposes 

 amounted to 95,146 short tons valued at $171,747 against 91,060 

 short tons valued at $179,432 in the preceding year. 



Production of gypsum 



The Gypsum Products Co. has engaged in the mining of gypsum 

 near Oakfield, Genesee co., shipping a small quantity last year for 

 the first time. 



The Interstate Gypsum Co. is a new organization, owning a 

 property near Akron, Erie co. 



The Empire Gypsum Co. has erected a calcining plant at Garbutt, 

 Monroe co. The gypsum is taken from the company's mine near by, 



