154 
OPERATIONS OF FUEL-TESTING PLANT Ttf 1905. 
Two mine samples were taken for chemical analysis as follows: No. 2095 from room a 
off the fourth east entry, 2,000 feet southeast of the drift mouth: No. 2096 in room 3 of 
the second west entry, 1,000 feet southwest of the drift mouth. 
CHEMICAL ANALYSES. 
Laboratory number. 
Air-drying loss 
® [Moisture 
g Volatile ma1 u 
* 1 Fixed carbon. 
£ Ash.: 
[Sulphur 
Hydrogen 
Carbon 
Nit rogen 
Oxygen 
Calorific value determined: 
Calories 
British thermal unit s. . 
STEAMING TESTS. 
Mine samples. 
2095 
1.80 
3. 99 
38. 77 
49. 17 
8.07 
3. 49 
7,279 
13,102 
2096 
1.80 
4. 06 
39.45 
50. 05 
6.44 
3. 35 
Car sad 
pie. 
3.9 
-,.3 
3(1.7 
49. 4 
S.5 
3.3 
5.3 
70.7 
I.I 
10.9 
7,13 
J 2, 84 
Test 884, Ohio No. a. 
as shipped, run of mine. Size as used, over 
1 inch, 49 per cent ; ', inch I <> I inch, 14.3 per cent; 
\ inch to \ inch, 10.9 per cent : under ', in 
per cent. Duration of test, 9.93 hours. Kind of 
grate, rocking. 
'est 
i.?, Ohio No. <;, washed. 
Size as shipped, run of mine. Size as used, ov© 
1 inch, in per rent . ', inch to 1 inch, 24.1 per cent 
', inch to ' inch. 13.7 percent: under ', inch, 22.: 
pet cent. Duration of test, 8.2 hours. Kind o 
grate, plain. 
MISCELLANEOUS ITEMS. 
Heating value of coal B. T. U. per pound dry coal. 
Force of draft : 
Under stack damper ' inch water. 
Abovi ■ fi re do. . . 
Furnace temperature °F. 
Dry coal use,! per square fool Of grate surface perhour pounds 
Equivalent water evaporated per square foot of water-heating surface per hour, 
mds 
pout 
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 percent. 
Coal as fired: 
Per indicated horsepower hour pounds. 
Per elect rical horsepower hour do... 
Dry coal: 
Pe-r indicated horsepower hour do... 
Per electrical horsepower hour do... 
'lest 284. 
12,974 
0.41 
,12 
2,334 
17.88 
2.90 
81.3 
7.27 
S.71 
9.04 
10. 60 
67. 29 
3.25 
4.01 
3.13 
3.86 
Test 253 
13,9C 
0.' 
.1 
2,3: 
15.1 
2.f 
79. 
3. •' 
