TESTS WYOMING. 
CHEMICAL ANALYSES. 
225 
Mine samples. 
/ Car 
sample. 
Li 
1376 
4.70 
8.60 
37.13 
32.37 
21.90 
4.94 
1377 
3.80 
9.23 
36. 08 
33 72 
20. 97 
4.33 
2131 
4 50 
8 93 
36 52 
33 76 
c 
J Ash 
20.79 
4.03 
4.88 
53.33 
.81 
P 
16.16 
Ca 
5,394 
9,709 
5,556 
10,001 
STEAMING TESTS. 
Test 19<>, Wyoming No. 2 B. 
Size as shipped, run of mine. Size as used, over 
I inch, 54.3 per cent; \ inch to 1 inch, 18.4 per cent; 
\ inch to \ inch, 14.5 per cent; under J inch, 12 8 per 
cent. Duration of test, 9.88 hours. Kind of 
grate, plain. 
Test 210, Wyoming No. 2 B. 
Size as shipped, run of mine. Size as used, over 
1 inch, 34.8 per cent; \ inch to 1 inch, 21.5 per cent; 
\ inch to h inch, 20.4 percent; under \ inch, 23.3 per 
cent. Duration of test, 10.08 hours. Kind of 
grate, rocking. 
Test 213, Wyoming; No. 2 B. 
Size as shipped, run of mine. Size as used, over 
1 inch, 40.4 percent; h inch to 1 inch, 26.7 percent; 
\ inch to h inch, 15.2 percent; under { inch, 17.7 per 
cent. Duration of test, 10.03 hours. Kind of 
grate, rocking. 
MISCELLANEOUS ITEMS. 
Test 196. Test 210. Test 213. 
Heating value of coal B. T. U. per pound dry coal. 
Force of draft: 
Under stack damper inch water. 
Above fire do... 
Furnace temperature °F. 
Dry coal used per square foot of grate surface per hour pounds. 
Equivalent water evaporated per square foot of water-heating surface 
per hour pounds. 
Percentage of rated horsepower of boiler developed 
Water apparently evaporated per pound of coal as fired pounds. 
Water evaporated from and at 212 °F.: 
Per pound of coal as fired do... 
Per pound of dry coal do . . . 
Per pound of combustible do. . . 
Efficiency of boiler, including grate per cent. 
Coal as fired: 
Per indicated horsepower hour pounds. 
Per electrical horsepower hour do... 
Dry coal: 
Per indicated he rsepower hour do . . . 
Per electrical horsepower hour do. .. 
10,888 
0.59 
.19 
1,950 
22.61 
2.83 
79.3 
4.83 
5.66 
6.27 
8.54 
55.61 
5.00 
6.17 
4.51 
5.57 
0.68 
.20 
2,067 
25.66 
3.15 
88.3 
5.30 
6.19 
6.84 
9.01 
58.66 
4.57 
5.64 
4.13 
5.10 
10,751 
0.63 
a. 08 
2,228 
32.58 
3.56 
99.86 
4.72 
5.56 
6.10 
8.30 
54.79 
5.09 
6.28 
4.64 
5.72 
i 
a .Forced draft. 
Bull. 290—06- 
-15 
