258 
CONTRIBUTIONS TO ECONOMIC GEOLOGY, 1902. [bull. 213. 
Rank of coal fields and coal-producing States in area and production — Cont' d. 
Area of 
coal- 
bearing 
forma- 
tions. 
Per 
cent 
prob- 
ably 
pro- 
duc- 
tive. 
Rank 
of 
field 
and 
State 
in area 
1900. 
Coal field, and State or Territory. 
Produc- 
tion. 
Aver- 
age 
price 
per 
ton at 
mine. 
Per- 
cent ol 
total 
pro- 
duc- 
tion. 
• Rank 
in 
pro- 
duc- 
tion. 
Northern Appalachian: 
Sq. miles 
15, 8(H) 
12,000 
510 
1,850 
17,280 
10,300 
75 
70 
80 
80 
75 
70 
10 
25 
22 
6 
13 
Tons. 
79,842,32(5 
18,988.150 
4,024, CSS 
2,353,576 
22,647,207 
2,222,867 
.97 
1.02 
.98 
.89 
.81 
.92 
29. 58 
7.03 
1.49 
.87 
8.39 
.82 
1 
4 
11 
17 
3 
18 
Ohio 
West Virginia 
Kentucky (eastern) 
Total 
57,740 
III 
1:50,078,814 
Southern Appalachian: 
Tennessee 
4,400 
167 
8,500 
47 
14 
N 
18 
31 
15 
3,708.5(52 
315,557 
8,394,275 
1.14 
1.17 
1.17 
1.38 
.12 
3.11 
13 
26 
5 
Georgia. 
Alabama 
Total.. 
13,067 
VI 
12,418,394 
Northern Interior: 
Michigan 
11,300 
(?) 
12 
849,475 
1.48 
.31 
25 
VII 
Eastern Interior: 
Indiana 
9,300 
42,900 
5,800 
60 
50 
65 
13 
1 
17 
6,484,086 
25,767,981 
3,106,097 
1.03 
1.04 
. 92 
2.40 
9. 55 
1.15 
6 
2 
15 
Illinois 
Kentucky (western) 
Total 
58,000 
II 
35,358,164 
Western Interior: 
Iowa 
20,000 
23,000 
3,200 
20,000 
50 
60 
75 
4 
2 
lit 
3 
5,202,939 
3,540,103 
1.38 
1.21 
1 . 9:5 
1.31 
9 
14 
Missouri . 
Nebraska 
Kansas 
4.4(57,870 
1.22 
1.65 
10 
Total 
66,200 
I 
1:5.210.912 
Southwestern: 
Indian Territory . 
14, 848 
1 . 728 
11,300 
50 
75 
45 
8 
23 
11 
1,922,298 
1,447,915 
968,373 
1.45 
1.14 
1.63 
.71 
.54 
.:«; 
19 
21 
24 
Arkansas 
Texas 
Total 
27,876 
V 
4,338,616 
Rocky Mountain: 
South Dakota... 
120 
L3,000 
32 
9 
129,883 
1,(5(51,775 
10 
4,014,(502 
1,147,027 
5,182,176 
1,263,083 
1.22 
1.63 
5.00 
1. 36 
1.2(5 
1.12 
1.37 
.05 
.(52 
1.49 
.42 
1.92 
.47 
28 
20 
30 
12 
Montana 
Idaho 
Wyoming., 
7,500 
2,000 
18,100 
2,890 
50 
30 
50 
40 
16 
21 
5 
20 
Utah. 
Colorado . . . 
23 
New Mexico 
8 
22 
Total 
43,610 
IV 
13,398,556 
Pacific coast: 
Washington 
450 
320 
280 
27 
28 
28 
2,474,093 
58,864 
171,708 
1.90 
3.74 
3.05 
.92 
.02 
.07 
Oregon. 
16 
California. 
29 
27 
Total 
1,050 . 
IX 
2,704,665 . 

