Thickness of Bituminous-Coal and Lignite Seams at All Mines and Thickness of Overburden at Strip Mines in the United States in 1950 Page: 11

TABLE 9. - NUMBER AND PRODUCTION OF ALL BITUMINOUS-COAL AND LIGNITE MINES IN THE UNITED STATES, CLASSIFIED PY THICKNESS OF SEAMS MINED IN EAQI DIS

(Districts as defined in the Bituminous Coal Act of 1937 and modifications thereto.

TRICT IN 1950

Exclusive of mines producing less than 1,000 tons)

Less tan 2 feet 2to 3 feet 3to4feet 4to 51
Percent Percent Percent
District Number Production of Numbe Production of Nube Production of Number Product
of (net total of (net total of (net total of (net
mines tons) produc- nincs tons produc- mines tons) produc- mines tons
option tfn tion

1. Eastern Pennsylvania ..........
2. Western Pennsylvania.....
3. Northern West Virginia.......
4. Ohio ..........................
5. Michigan ..................
6. Panbandle ....................
7. Southern Numbered 1 ...........
8. Southern Numbered 2..........
9. West Kentucky .................
10. Illinois....................
11. Irziiana..........
12, Indiowa .......................
12, Iowa """""..""""""""""""""""""".
13. Southeastern................
14. Arkan as--klahoma ......
15. Southwestern ................
16. Northern Colorado .............
17. Southern Colorado ............
18. New Mexico ..................
19. Wyoming .....................
20. Utah ..........................
21. North-South Dakota (lignite) .
22. Montana ........."...........
23. Washington ...................
Total ....................

18
4
8
1
4
1
1
17
27
54
1
1

307,387
183,894
165,931
29,479
179,684
21,582
8,971
245,970
580,713
2,094,087
41,516
8,437
8,954

0.7
.3
.4

.1
.1

.1
.5
1.6
27.8
30.5
4.0
.2

.7

328
46
6
117
1
68
404
3
8
7
22
196
28
46
2

9

9,806,164
1,635,588
636,250
4,343,381
11,500
4,227,445
7,141,746
69,039
101,414
565,050
207,750
3,925,075
729,642
2,028,493
3,243
227,323

20.9
2.7
1.5
11.5
100.0
8.7
5.7
.3
.2
2.8
11.0
25.8
34.9
29.5
.1

17.7

585
157
57
354
2
185
2,867
27
24
14
16
178
16
47
19
6
4
6

26,348,355
5,413,367
3,647,804
12,380,412
399,676
19,698,820
57,506,457
1,700,248
4,115,851
2,380,162
226,588
3,686,020
262,023
2,145,271
137,198
24,910
10,051
151,401
4,687
94,741

56.2
9.0
8.7
32.8
9.6
40.5
45.8
7.1
7.3
11.9
12.0
24.2
12.5
31.3
3.6
16.3
.1
2.3
.2
7.4

237
141
109
133
19
108
303
220
102
40
55
24
10
18
2
35
9
5
3
3
3
4

feet 5 to 6 feet 6 to 7 feet 7 to 8 feet 8 feet and ov To
Percent Percent Percent Percent percent
ion of Number Production of Number Production of Number Production of Number Production f uber
total of (net total of (net total of (net total of net total of
pr c- nnes tons) prodc- mines tons) produc- i nes tons) produc- mines tons produc- mines
tion tion tion tion tion

6,165,514
6,159,894
3,431,611
13,462,206
2,792,472
10,327,103
31,112,513
7,235,850
10,502,394
8,206,344
767,836
4,681,858
247,976
577,176
5,120
1,055,437
90,602
2,078,345
35,545
46,018
396,861
79,023

13.2
10.2
8.2
35.7
67.2
21.3
24.8
30.1
18.6
41.1
40.6
30.7
11.9
8.4
.5
27.7
59.3
17.0
.5
1.4
15.7
6.3

68
179
88
54
10
49
109
27
46
21
17
9
1

4
43
2
7
2
4
4

3,382,058
14,093,450
5,711,228
6,377,244
961,993
6,054,694
15,474,593
9,656,584
4,484,298
4,835,621
272,886
1,955,545
3,071
147,748
1,009,539
34,634
183,161
9,065
13,724
453,983

7.2
23.5
13.7
16.9
23.2
12.5
12.3
40.2
8.0
24.3
14.4
12.8
.2
14.2
26.6
22.7
2.9
.1
.4
35.2

_ 1 1 IJ - ---- ----- ------------ ' 4 -

138

3,876,605

0.8

1,291

35,659,103

6.9

4,567

U4C,334,042

27.2

1,583

108,457,748

I 1 1__ ___ _ _ .I_ _ LI ___- -__ _

21.0

744

75,115,119

24
153
98
13

23
46
22
65
12
9
6
1
1
4
22
1
5
5
5
6
4

495,424
22,055,526
9,821,900
988,].71
5,732,344
7,849,228
4,988,251
17,492,728
2,819,322
403,133
263,621
5,154
2,283
62,427
418,444
2,528
1,834,777
253,935
412,577
248,624
289,352

1.1
36.7
23.5
2.6
11.8
6.3
20.7
31.1
14.1
21.3
1.7
.3
(1)
6.0
11.3
1.7
28.9
3.8
12.5
9.9
22.5

3
69
75
5
4
13
4
32
4
1
2
1
6
7
2
11
7
2
2

37,791
7,874,523
11,956,416
29,117
1,687,929
2,038,002
383,409
8,546,991
623,108
4,197
242,189
7,003
163,358
37,163
315,933
639,682
409,650
6,332
7,629

0.1
13.1
28.6
.1

3.5
1.6
1.6
15.2
3.1
.2
1.6
.3
15.8
1.0
5.0
9.6
12.4
.3
.6

19
28
76
4
12
21

21
1
2
1
1
10
26
22
40
28
11
8

296,258
2,683,053
6,573,311
14,629

804,822
4,326,812
11,047,245
505,840
233,285
252,808
18,169
b16,250
1,133,844
2,925,982
5,580,268
2,415,204
1,863,662
126,823

0.6
4.5
15.8
(l1
1.6
3.4
19.6
;.6
1.6
12.1
.3
59.5
e9.8
46.1
83.7
73.3
73.9
9.8

1,282
777
509
688
1
31
450
3,767
303
298
100
121
434
85
167
27
155
18
45
67
47
23
34

i 1-1I- 9

14.5

525

76,439,749

14.8

250

35,010,422

331 1

41,418,265

I 1. I LLIL I I_ ___ _ IL I..LIALJ

8.0

9,429

tal
Production
(net
tons)

46,838,9 51
60,099,295
41,778,520
37,761,091
11,500
4,154,141
48,562,636
125,629,035
24,033,381
56,290,921
19,957,029
1,891,411
15,233,563
t,088,390
6,865,479
1,036,419
3,803,305
152,674
6,348,249
6,69,896
3,297,173
,520,166
1,287,828

516,311,053

/ Less than 0.05 percent.
4889

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