CHAPTER V. 

 STATISTICS OF THE GYPSUM AND PLASTER INDUSTRIES. 



THE statistics presented in this chapter are those collected by Mr. 

 G. I. Adams, of the IT. S. Geological Survey, for the annual report on 

 " Mineral Resources of the United States " issued by that organization. 

 They have, however, been condensed and rearranged in order to better 

 serve the purposes of this volume. 



Total TTse of Gypsum in the United States. 



The total amount of gypsum used in the United States for the 

 four years 1900-1903, inclusive, is given in the following table. The 

 total given in the last column of this table includes the gypsum imported 

 as well as that produced in the country. 



TABLE 23. 

 TOTAL IMPORTS AND PRODUCTION OF GYPSUM. 



This total amount of gypsum was distributed about as follows to 

 the two principal uses. The term calcined plaster as here used includes 

 all the grades of plaster of Paris, cement plaster, wall-plaster, hard- 

 finish plasters, etc. 



TABLE 24. 

 USES OF GYPSUM. 



79 



