128 PRELIMINARY REPORT ON COAL-TESTING PLANT, [bull. 261. 
hours and yielded 4,256 pounds, or 42.56 per cent, of coke, and 229 
pounds of ash and breeze. The results showed that the coal would 
make a good coke if the ash could be materially reduced. Washing 
in this case lowered the percentage of ash from 19.14 per cent in the! 
first test to 14.81 per cent in the second and 15.98 per cent in the 
third. The results of these tests show that the washing of this coal 
for coking purposes is advisable. 
West Virginia No. 6. — Run-of-mine coal from the New River 
Smokeless Coal Compan}^, Rush Run, W. Va. 
Three tests were made on this coal, which was unwashed. The first 
charge, consisting of 13,000 pounds, was burned for 90 hours, anq 
yielded 8,303 pounds, or 63.9 per cent, of light-gray, soft coke. Thd 
second charge, which consisted of 9,000 pounds, was burned for 6Q hours J 
and yielded 6,399 pounds, or 71.1 per cent, of coke, of somewhat betteJ 
quality than the first, although still gray and light. The charge conj 
sisted of 8,000 pounds of pulverized coal. It was burned for 44 hours! 
and yielded 5,849 pounds, or 73.1 per cent, of coke, which was densa 
and tough, but light in weight and color, and of poor ring. 
West Virginia No. 7.- — Run-of-mine coal from the New Rivel 
Smokeless Coal Company, Sun, W. Va. 
This test was made on unwashed coal, the charge weighing 8,000 
pounds. It produced 5,119 pounds, or 64 per cent, of coke of go 
size and quality, but rather dark in color. 
West Virginia No. 8. — Run-of-mine coal from Gauley Mountai 
Coal Company, Ansted, W. Va. 
This test was made on 11,000 pounds of unwashed coal, which was 
burned for 66 hours and yielded 7,124 pounds, or 64.7 per cent, of 
coke, and 589 pounds of ash and breeze. The coke was hard, of good 
color, although of somewhat irregular cell structure. 
West Virginia No. 9. — Run-of-mine coal from Vulcan mine of the 
Mount Carbon Coal Company (Limited), Powellton, W. Va. 
Two tests were made on this coal, the first being unwashed. th( 
second washed. The unwashed charge weighed 10,000 pounds, and w 
burned 40 hours. It yielded 6,084 pounds, or 60.8 per cent, of co 
and 314 pounds of breeze and ash. The coke was heavy and gray 
in color. It was of good quality, though slightly brittle. The c(] 
from the washed coal (p. 72) showed much improvement over t; 
from the unwashed coal, and could be considered a high-grade co 
The charge of washed coal weighed 11,000 pounds, burned for 
hours, and yielded 6,803 pounds, or 61.8 per cent, of coke, and only 
pounds of ash and breeze. 
West Virginia No. 10. — Lump and run-of-mine coal from Stuart § 
Buck, Mora, W. Va. 
This test was made on 11,000 pounds of unwashed coal. It wi>| 
burned for 68 hours and yielded 7,858 pounds, or 71.4 per cent, i j 
- 
