342 
CEMENT MATERIALS AND INDUSTRY. 
Trull. 
shell (which is one-fourth inch iron) is filled with clay. A kiln of t 
size and type will produce 150 barrels of cement a day. 
The coal used in these kilns is bituminous nut and slack mixed, fr< 
Pittsburg or Jellico. About 25.6 pounds of coal are required to bn 
a barrel of cement (265 pounds), equivalent to a fuel consumption 
about 9.5 per cent of the weight of cement produced. 
Analyses of natural cements, Louisville district, Indiana and Kentucky. 
Silica (Si0 2 ) 
Alumina ( A1 2 3 ) 
Iron oxide ( Fe 2 3 ) . . . 
Lime (CaO) 
Magnesia (MgO) 
Alkalies (Na 2 0,K 2 0) . 
Carbon dioxide (C0 2 ) 
Water 
18.92 
11.02 
1.91 
46.90 
a. 97 
n. (I. 
n. d. 
n. d. 
21.10 
|7. 50 
44.40 
7.00 
.80 
11.18 
1.16 
22.54 
(8. 24 
12. 14 
42.31 
5.39 
2.82 
n. d. 
11. d. 
23.29 
5.96 
2.16 
41. 28 
15. 39 
1.98 
11. d. 
n. d. 
24. 40 
20 
K 
41.80 
16.29 
1. 52 
J9.89 
25.28 
r7.85 
ll. 43 
44.65 
9.50 
11. d. 
7.04 
26. 40 
6.28 
1.00 
45. 22 
9.00 
4.00 
7.86 
23 
7 
1 
43 
L0 
2 I 
« Probably erroneous. 
1. Quoted by Jameson, Portland Cement, p. 177. 
2. Quoted by Smith, Mineral Industry, vol. 1, p. 50. 
3. Diamond brand. Haas and McGraw, analysts. Engineering News, April 30, 1896. 
4. Star brand. Haas and McGraw, analysts. Ibid. 
5. Lord, analyst. Kept. < >hio Geol. Survey, vol. (i, p. G74. 
ii. Hulme Star brand. Quoted by Cummings, American Cements, p. 35. 
7. Fern Leaf brand. Quoted by Cummings. Ibid. 
8. Average of preceding seven analyses. 
KATURAT.-CEME1XT RESOURCES OF KANSAS. 
The natural cement district of Kansas is located around Fort Sco 
where a 4^-foot bed of natural cement rock outcrops. The rock is 
dark-colored, fine-grained, compact limestone of Carboniferous a| 
It extends for a considerable distance throughout the State, but 1 
been worked for natural cement only in the immediate vicinity 
Fort Scott. 
Analyses of natural-cement rock, Fort Scott, Kans. 
Silica (Si0 2 ) 
Alumina (A1,0 3 ) ... 
Iron oxide ( Fe.,< ) :( ) . 
Lime (CaO) 
Magnesia (MgO) ... 
Carbon dioxide (C0 2 
1 
2 
.'{ 
15. 21 
17.2(5 
21. 80 
4. 56 
2. 05 
3.70 
n. d. 
5.45 
3. 10 
36. 52 
34. 45 
35. 00 
5.07 
5.28 
3. 50 
34. 27 
32. 87 
33. 00 
1. Smith, Mineral Industry, vol. 1, p. 49. 
2. Brown, Cement Directory, 2d ed., p. 276. 
'■). Richardson, Brickbuilder, July, 1897. 
4. Average of preceding three analyses. 
