TP:STS WYOMING. 
227 
WYOMING NO. 3. 
Bituminous coal from mine of Stilwell Coal Company, Aladdin, Crook County, Wyo., 
on the Wyoming and Missouri Railroad. 
This sample consisted of run-of-mine coal and was shipped under the direction of M. R. 
Campbell, of the United States Geological Survey. The following tests were made: Wash- 
ing test No. 129, coking test No. 52, steaming tests Nos. 211 and 212, steaming test on 
washed coal No. 223, and producer-gas test No. 69. 
Two mine samples (Nos. 1976 and 1977) for chemical analysis were taken at working 
faces in the mine. 
CHEMICAL ANALYSES. 
Mine samples. 
Laboratory number 
Air-drying loss 
« [Moisture. 
Volatile matter. 
Fixed carbon . . . 
[Ash 
[Sulphur 
Hydrogen 
Carbon 
Nitrogen 
Oxygen 
Calorific value determined: 
Calories 
British thermal units.. 
1976 
11.80 
17.74 
37. 64 
33. 07 
11.55 
7. 03 
5,293 
9,527 
1977 
12. 00 
18.42 
36. 53 
34. 95 
10. 10 
(i. 73 
Boiler 
test 
sample. 
2278 
2! 90 
15. 12 
34. 36 
33. 82 
16.70 
6. 66 
5.20 
48.16 
.70 
22. 58 
4,960 
8,928 
STEAMING TESTS. 
Test 211, Wyoming No. 3. 
Size as shipped, run of mine, Size as used, over j 
inch, 58.7 percent; \ inch to 1 inch, 17.3 percent; 
inch to \ inch, 11.6 per cent; under \ inch. 12.4 
per cent. Duration of test, 10.05 hours. Kind 
)f grate, rocking. 
Test 212, Wyoming No. 3. 
Size as shipped, run of mine. Size as used, over 
inch, 51 per cent; h inch to 1 inch, 20.6 per cent; 
I inch to h inch, 12.6 per cent; under | inch, i').S 
per cent. Duration of test, 9.8 hours. Kind of 
grate, rocking. 
Test 223, Wyoming No. 3, washed. 
Size as shipped, run of mine. Size as used, over 
1 inch, 27.9 per cent; \ inch to 1 inch, 21.3 per cent; 
I inch to \ inch, 20.5 per cent; under \ inch, 30.3 
percent. Duration of test, 8.95 hours. Kind of 
grate, rocking. 
MISCELLANEOUS ITEMS. 
Test 211. Test 212. Test 223 
[eating value of coal B . T . U . per pound dry coal . . ; 10, 519 
orce of draft: 
Under stack damper inch water. . 0. 63 
Above fire do .28 
urnace temperature ° F.. 1,917 
ry coal used per square foot of grate surface per hour pounds. . 18. 96 
quivalent water evaporated per square foot of water-heating surface 
per hour pounds. . 2. 39 
rcentage of rated horsepower of boiler developed 67.0 
ater apparently evaporated per pound of coal as fired pounds. . 5. 12 
ater evaporated from and at 212° F.: 
Per pound of coal as fired do 5. 98 
Per pound of dry coal do 7. 04 
Per pound of combustible do 9. 17 
a Natural and forced draft. 
I). 45 
<>. 01 
2,142 
26. 07 
3.15 
88.2 
4.95 
5.81 
6. 73 
12,641 
0.59 
.23 
20.0 
2.89 
81.0 
5.54 
6. 53 
8.07 
9.05 
