CEMENT MATERIALS AND INDUSTRY, 
[bull. 24! 
16 
increase has been within the last decade. The production of Portland 
cement has risen from a little less than $2,500,000 in 1896 to over 
$27,000,000 in 1903. 
4 25,000,000 
1 
1 
24.000.000 
4 
23,000,000 
/ 
' 
22,000,000 - 
/ 
/ 
21,000,000 - 
i 
20.000,000 - 
i 
19.000,000 - 
i 
j 
18,000,000 - 
I 
J 7, 000,000 
j 
16,000.000 
1 
15,000,000 
1 
14,000,000 
1 
- 
i 
4— 
13,000,000 
/ 
I 
13,000,000 
/ 
/ 
11,000,000 
/ 
/ 
10,000.000 
/ 
J- 
/ 
9,000,000 
/ 
* 
/■— ~. 
8,000,000 
1 
i 
\ 
-A, 
t 
7,000.000 
1 
1 
/ 
/ 
6,000.000 
\l 
/ / 
5,000,000 
1 
/ / 
/ 
/ 
4.000.00C 
— 
7 
/ 
/ 
/ 
3.000.00C 
— 
/ 
/ 
j 
2,000,OOC 
) — 
_ J.---: 
—r- • 
1,000,00C 
> — 
".:.: 
"y" 
a) ci <x> o> 
,T) \0 I^ UJ ■" 
(T) <T> 0> <*> w* 
8 5 o 
m en 01 
Portland cement production of The United States 
Gold production of Alaska 
Gold production of Cripple CreeU district, Colorado 
Fig. l.-Portland cement production of the United States, 1888-1903. 
This report has been prepared in order to give information i 
cement materials, which is desired by two classes ot persons. *n 
owners of lands on which marl, limestone, or clay deposits are toi 
often inquire whether a given material is suitable for Portland-cem u 
manufacture. In response to such questions the writer has attempt 
