ALASKA COAL FIELDS. 
45 
Analyses of Alaska coal. 
District and kind of coal. 
ANTHRACITE. 
Bering River, average of 7 analyses. 
Matanuska River, 1 sample 
SEMIBITUMINOUS. 
Bering River, coking, average of 11 analyses . . 
Cape Lisburne, average of 3 analyses 
Matanuska River, coking, average of 16 analy- 
ses 
BITUMINOUS. 
Lower Yukon, average of 11 analyses 
SUB-BITUMINOUS. 
Matanuska River, average of 4 analyses 
Koyukuk River, 1 sample 
Nation River, 1 sample 
Alaska Peninsula, average of 5 analyses 
Cape Lisburne, average of 11 analyses 
Anaktuvuk River, 1 sample 
LIGNITE. 
Port Graham, 1 sample 
Southeastern Alaska, average of 5 samples 
Wainwright Inlet, 1 sample 
Colville River, 1 sample 
Upper Yukon, Canadian, average of 13 analyses 
Upper Yukon, Circle province, average of 3 
analyses 
Upper Yukon, Rampart province, average of 6 
analyses 
Seward Peninsula, 1 sample 
Chitistone River, 1 sample 
Kachemak Bay, average of 6 analyses 
Cantwell River, 1 sample 
Kodiak Island, 1 sample 
Unga Island, average of 2 analyses 
Tyonek, average of 4 analyses 
Chistocbina River, 1 sample 
Mois- Volatile Fixed 
ture. matter, carbon. 
7.88 
2.55 
4.76 
3.66 
6.56 
4.47 
1.39 
2.34 
9.35 
6.85 
16.87 
1.97 
10.65 
11.50 
13.08 
10. 45 
11. 42 
24.92 
L.65 
19.85 
13.02 
12.31 
10.92 
8.35 
15.91 
6. 15 
7.08 
13. 27 
17.47 
20. 23 
35. 43 
34.32 
40.02 
38.68 
38.01 
36. 39 
37.48 
37.84 
42.99 
30.33 
39.88 
41.81 
41. 15 
38.15 
51. 50 
40.48 
48.81 
51. 48 
53. 36 
54.20 
60. 35 
78. 2:; 
84. 32 
74 84 
75. 95 
65. 39 
49.44 
48.26 
55. 55 
49. 75 
17. 1'. 
43.38 
39.12 
35.18 
42.94 
30. 27 
39. 28 
40.49 
3(5.95 
33. 58 
40. 75 
30. 99 
32.40 
33.80 
28.25 
30.92 
19.46 
Ash. 
Sul- 
phur. 
7.74 
6.05 
7.12 
2.92 
11.60 
12.95 
3.04 
9.22 
5.45 
13.38 
6. 53 
24. 23 
3.42 
27.90 
7.72 
7.27 
10. 48 
3. 35 
6.10 
8.68 
5.77 
2.41 
7.47 
6.53 
4.28 
Fuel 
ratio. 
1.5 1 
.96 
.37 
1.07 
.35 
.54 
.39 
.57 
.62 
.50 
1.26 
1.30 
.33 
.68 
.35 
.16 
.17 
1. 36 
.38 
12.86 
11.90 
5. (is 
4. 46 
1.90 
1.40 
1.40 
1.39 
1.30 
1.24 
1.20 
1.04 
1.02 
1.00 
1.00 
.79 
.77 
.66 
. 66 
.62 
.58 
.32 
Bull. U. S. Geol. Survev No. 284, p. 74, analyses 1 to 7. 
Bull. U. S. Geol. Survey No. 284, p. 98, analysis 1. 
Bull. U. S. Geol. Survev No. 284, p. 74, analyses 10 to 20. 
Bull. U. S. Geol. Survey No. 278, p. 47, analyses 13 to 15. 
Bull. U. S. Geol. Survey No. 284, p. 98, analyses 2 to 17. 
Bull. U. S. Geol. Survey No. 218, pp. 62, 63, analyses 26, 28 to 38. 
Bull. U. S. Geol. Survey No. 284, p. 98, analyses 18 to 21. 
Bull. U. S. Geol. Survey No. 218, p. 62, analysis 28. 
Bull. U. S. Geol. Survey No. 218, p. 62, analysis 17. 
Bull. U. S. Geol. Survey No. 284, p. 27. 
Bull. U. S. Geol. Survey No. 278, p. 47, analyses 1 to 7, 9 to 12. 
Prof. Paper U. S. Geol. Survey No. 20, p. 114, analvsis 607. 
Bull. U. S. Geol. Survey No. 259, p. 170. 
Bull. U. S. Geol. Survey No. 284, p. 27. 
Prof. Paper U. S. Geol. Survey No. 20, p. 114, analysis 653. 
Prof. Paper U. S. Geol. Survey No. 20, p. 114, analvsis 620. 
Bull. U. S. Geol. Survey No. 218, pp. 61, 62. analyses 3 to 15. 
Bull. U. S. Geol. Survey No. 218, p. 62, analyses 16, 18, 19. 
Bull. U. S. Geol. Survey No. 218, p. 62, analyses 20 to 25. 
Bull. U. S. Geol. Survey No. 247, p. 67. 
Prof. Paper U. S. Geol. Survey No. 41, p. 125. 
Bull. U. S. Geol. Survev No. 259, p. 170, analyses 3, 4, 7 to 10. 
Bull. U. S. Geol. Survey No. 218, p. 62. 
Bull. U. S. Geol. Survey No. 259, p. 170. 
Bull. U. S. Geol. Survey No. 259, p. 170. 
Twentieth Ann. Rept. U. S. Geol. Survey, pt. 7, p. 23, analyses 1 to 4. 
Prof. Paper U. S. Geol. Survey No. 41, p. 124. 
DEVELOPMENTS AND PRODFCTIOK. 
The coal-mining industry of Alaska is still in a practically undevel- 
oped condition. Coal has been mined intermittently and on a small 
scale at several places for many years, but the industry has never been 
