250 



NEW YORK STATE MUSEUM 



would amount to practically 360,000 tons, with a value of 

 $20,000,000. The flue dusts and gases produced during the manu- 

 facture of Portland cement generally carry a considerable per- 

 centage of the alkalies. It has been estimated that if all the cement 

 plants carrying available potash in the United States could be 

 equipped to produce this material, there would be an annual pro- 

 duction equivalent to approximately 80,000 tons of potassium oxide. 



Materials grouped under the heading of natural cement were 

 produced to the extent of 104,415 barrels, with a value of $51,635. 

 The decline in production of natural cement was very great during 

 1916. In the previous year there was a production of 223,564 

 barrels with a value of $134,138. There were 4 plants in operation 

 with a combined total of 18 kilns. Of this number, 12 were of the 

 continuous type of vertical kiln, having a daily available capacity, 

 under normal conditions, of 90 barrels each ; the others belong to 

 the old style of intermittent vertical kiln of variable capacity. 



The following table gives the statistics of cement production in 

 the State for the period 1897-1916. The figures prior to 1904 have 

 been taken from the annual reports of the Mineral Resources. It 

 will be noted that the amounts given for the year 191 6 represent 

 shipment rather than production, but the difference is not important. 



Production of cement in New York 



YEAR 



1897 

 1898 

 1899 

 1900 

 I9OI 

 1902 

 1903 

 1904 



1905 

 1906 

 1907 

 1908 

 1909 

 I9IO 

 I9II 

 I912 



I913 

 I914 



I915 

 I916 



PORTLAND CEMENT 



Barrels | Value 



394 



398 



554 



358 



472 



386 



465 832 1 



617 



228 



156 807 1 



602 



946 



377 



302 



117 



822 



423 



374 



108 



450 



988 874 1 



061 



019 



364 



255 



415 



400 



495 



842 



146 782 



667 



728 



219 



460 



603 477 



$690 179 



970 126 

 708 579 

 582 290 

 617 228 



521 553 

 031 310 



245 778 

 046 864 

 766 488 

 214 090 

 813 622 

 761 297 

 939 818 

 930 434 

 488 931 

 873 807 

 088 677 

 175 528 

 752 809 



NATURAL CEMENT 



Barrels 



259 186 



157 917 

 689 167 

 409 085 

 234 131 

 577 340 

 417 137 

 881 630 

 257 698 

 I 691 565 

 I 137 279 

 623 588 



549 364 

 292 760 



274 973 

 287 693 



193 975 

 232 076 

 223 564 

 104 415 



Value 



123 771 

 065 658 

 813 500 



045 451 

 117 066 



135 036 

 510 529 

 207 883 

 590 689 

 184 211 



757 730 

 441 136 

 361 605 

 147 202 

 134 900 

 142 165 



95 565 

 115 117 

 134 138 



51 635 



