136 
OPERATIONS OF FUEL-TESTING PLANT IN 1905. 
PRODUCER-GAS TEST. 
Test <»8, North Dakota No. 1 15. 
Size as shipped, run of mine. Size as used, over 1 inch, 79 percent; \ inch to 1 inch, 9 per cent; | inch 
to \ inch, 5 per cent; under J inch, 7 percent. Duration of test, 49 hours. 
Average electrical horsepower 198. 4 
Average B. T. U. gas, per cubic foot 160. 1 
Total coal fired pounds. . 20,000 
COAL CONSUMED IN PRODUCER (POUNDS PEE HORSEPOWER PEP. HOUR). 
Test (i8. 
Per electrical horsepower: 
Available for outside purposes 
Developed at switch board 
Per brake horsepower: 
Available for outside purposes 
Developed at engine 
Equivalent used by 'producer plant. 
Per electrical horsepower: 
A vailable for outside purposes 
Developed at switch board 
Per brake horsepower: 
Available for outside purposes 
Developed at engine 
Coal as 
fired. 
2. 88 
2. 67 
2.45 
2.27 
3.04 
2.82 
2. 58 
2.40 
Dry 
coal. 
1.94 
1.80 
1. 65 
1.53 
2. 05 
1.90 
1.74 
1.61 
Com- 
bustible. 
1.61 
1.50 
1.37 
1.27 
1.70 
1.58 
1.45 
1.34 
ANALYSKS. 
Test 68. 
Test 68 
Coal. 
Moisture 
32. f.4 
29.19 
26. 7.". 
11.42 
Gas li// i olume. 
Carbon dioxide (CO2) 
8.2 
Volatile matter. 
25. 2 
Fixed carbon 
15.1 
Ash 
Methane (CM,) 
Nitrogen (N2) 
2.6 
100.00 
3. 54 
Sulphur 
100.0 
NORTH DAKOTA NO. 2 B. 
Brown lignite from mouth of Cedar Coulee, 4 miles southeast of Williston, Williams 
County, N. Dak., furnished by the engineers of the United States Reclamation Service. 
This sample consisted of run-of-mine coal, and was used in making producer-gas (est 
No. 72.« 
Mine sample No. 1730 was taken in this mine for chemical analysis. 
o For tests of sample shipped during 1904, see Bull. U. S. Geol. Survey No. 261, 1905. p. 101. 
