THE MINING AND QUARRY INDUSTRY I913 



13 



CLAY 



BY ROBERT W. JONES 



The clay-working industries experienced a rather poor season 

 in 191 3. In the structural branches conditions fluctuated very 

 markedly ; at times the demand for building brick was fairly good, 

 but such periods were followed by sudden slumps which left the 

 market overstocked and brought prices down to a lower basis. 

 The consequence was that the output of clay structural materials 

 was smaller than in the preceding year and conditions at the close 

 of the season were not auspicious for any great revival of activity 

 in the immediate future. 



The decline of output in the structural branches, however, was 

 counterbalanced by a gain in the paving brick and pottery in- 

 dustries so that the year's total was somewhat larger that the 

 output recorded in 1912. The combined value of all the products 

 made in the State was $12,077,872, as compared with $12,043,095 

 in 1912. 



The following table presents the figures of production for the 

 different clay-working industries as they have been reported by 

 the individual plants. The classification is somewhat different than 

 that followed heretofore, necessitating some changes in the figures 

 for the years 191 1 and 1912. 



Production of clay materials 



MATERIAL 



911 



1912 



1913 



Common brick 



Front brick 



Vitrified paving 



Hollow brick 



Fireproofing 



Terra cotta 



Fire brick and stove lining 



Drain tile 



Sewer pipe 



Pottery. 



Miscellaneous 



Total 



31° 5ii 

 132 792 

 388 479 



82 217 

 229 627 

 718 700 

 413 500 

 202 292 

 138 258 

 196 054 



20 179 



$9 832 609 



666 945 

 109 657 

 382 984 



42 575 

 230 833 

 139 291 

 380 005 

 122 571 



77 644 

 876 762 



13 828 



938 922 



99 736 

 576 970 



44 265 

 276 053 

 113 322 

 371 408 



134 199 



154 646 



367 187 



1 164 



$12 043 095 



Il2 O77 872 



There were two hundred four companies and individuals active 

 in the clay-working industries last year. Of this number, one 

 hundred fifty-nine were engaged in the production of common build- 



