CEMENT 1209

 Type 2 includes cement made from a mixture of comparatively pure limestone
with clay or shale. This mixture is employed at the majority of plants in
the United States. In 1941 four plants reported the use of oystershells and
clay; the output of these plants is included in type 2.
 Type 3 includes cement manufactured from a mixture of marl and clay. This
type of mixture has been used in certain plants in Michigan, Ohio, Indiana,
New York, and Virginia
 Type 4 includes portland cement manufactured from a mixture of limestone
and blast-furnace slag

Production and percent of total output of portland cement in the United &&es,
1898—1914, 1926, 1929, 1933, 1935, and 1941, according to types of
material used
Year.

~
Type 1. Cement rock and pure

Barrels

T e 2 Limestone
~1 clay or shale

T e 3 Ma I ~and clay r
Barrels

Type 4. Blastirnaceslagand




Barrels



Barrels

1898
1899                
1900                
1901                 
1902                
1903                
1904                
1905                
1906                
 1907 - - - -
1908                
l909 - - - -'  .     .
1910                
 1911 - - - -
1912                
1913 - - - - .
 1914 . ....~.
1926
1929 - - . .
193& - - - .. 
 1935 - -. - 1941 . . -
2 764 694
4,010,132
5, 960, 739
8,503,500
10,953, 178
12, 493, 694
15, 173, 391
18, 454,902
23,896,951
25,859,095
20, 678, 693
24, 274,047
26,520,911
26, 812, 129
24, 712, 780
29, 333, 490
24,907,047
4409065i
51,077,034
14, 135, 171
23,811, 687
46, 534, 193
74 9
70.9
70. 3
66.9'
63. 6
55. 9
57. 2
52. 4
51. 4
53. 0
40. 6
37. 3
34. 6
34. 1
' 30. 0
31. 8
28.2
268
29. 9
22. 3
31. 0
28. 4
365 408
546,200
1, 034, 041
2,042,209
3, 738,303
6, 333, 403
7, 526, 323
11, 172, 389
16, 532, 212
17, 190, 697
23.047, 707
32, 219, 365
39, 720, 320
40, 665, 332
44, 607, 776
47, 831,863
50,168,813
101637866
97, 623, 502
143, 638,023
1 45, 073, 144
' 102, 285, 699
9 9
9.7
12. 2
16.1
2!. 7
28.3
28. 4
31. 7
35.6
35. 2
45.0
49. 6
51.9
51. 8
54. 1
51. 9
56.9
618
57. 2
68. 7
58. 8
62. 4
562 092
1,095,934
1, 454, 797
2,001,200
2, 220, 453
3,052, 946
3, 332, 873
3, 884, 178
3,958, 201
3, 606, 598
2,811, 212
2, 711, 219
3,307, 220
3, 314, 176
2, 467, 368
3, 734, 778
4,038,310
33°4408
4,832, 700
1, 402, 744
1, 478, 569
3, 142, 021
15 2
19.4
17. 1
15.7
12.9
13. 7
12. 6
11. 0
8.5
7. 4
5. 5
4. 2
4. 3
4. 2
3. 0
4. 1
4.6
20
2.9
2. 2
1. 9
1. 9
32,443
164,316
318,710
462,930
473,294
1, 735,343
2,076,000
2, 129,000
4.535,300
5, 786,800
7,001,500
7, 737,000
10, 650, 172
11, 197,000
9,116,000
15477229
17, 112,800
4, 297, 251
6, 378, 170
12,068. 64.6
0.4
1.3
L8
2.1
1.8
4.9
4.5
4.4
3.9
3.9
9.2
9.9
129
12.2
10.3
91
10.0
6.8
3.3
7. 4
 1 Includes output of 2 plants using oystershells and clay in 1926; 3 plants
in 1929, 1933, and 1935: and 4 plants in 1941.

RAW MATERIALS
 The producers reported that approximately 52,755,253 short tons

of raw materials (exclusive of fuels and explosives) entered into the manufacture
of 164,030,559 barrels (30,837,745 short tons) of portland cement in the
United States in 1941—an average of about 643pounds to a barrel (376
pounds) of finished cement. The totals for 1941, with corresponding figures
for 1940 (in parentheses) follow: 42,733,707 tons of limestone and cement
rock (34,040,119 tons, revised figure); 4,726,192 tons of clay and shale
(4,016,427 tons, revised figure);
659,201 tons of blast-furnace slag (581,873 tons); 1,066,635 tons of marl
(932,339 tons); 1,035,179 tons of gypsum (807,938 tons, revised figure);
and 2,534,339 tons of other materials, such as oystershefls, sandstone, sand,
cinders, fluorspar, iron ore, diatomaceous shale, pumicite, fuller's earth,
bentonite, silica, quartz, ashes, pyrite ore, pyrite cinder, roll scale,
calcium chloride, and hydrated lime (1,878,651 tons, revised figure).