36 WASHING, COKING, AND CUPOLA TESTS. 
DESCRIPTIONS OF COKE AND REMARKS. 
The following notes are given to supplement the information 
contained in the preceding table: 
"Cell structure" refers to the general appearance as to size and 
not to the number of cells as given by percentage of cells by volume. 
In many tests the cell structure as determined from general appear- 
ance is small when the percentage by volume indicates quite the 
reverse. (See, for example, test 29, Pennsylvania No. 8 coal, p. 24.) 
Alabama No. 2 B. — Test 142: Soft, dense coke; dull appearance; cell structure very 
small; breakage, lumps of irregular size; 1-inch black butts. 
Alabama No. 3. — Test 138: Dark-gray color, some deposited carbon; cell structure 
good; breakage good; long, large pieces; good, hard, heavy coke, with excep- 
tion of f-inch black butts, which should be easily removed; ash high; washing 
would probably reduce ash and improve quality of coke. 
Test 139: Light-gray color, some silvery deposit of carbon; good ring; cell struc- 
ture good; breakage good; long, large pieces; good, strong, hard, heavy coke; 
improved very materially by washing. 
Alabama No. 4. — Test 131: Light-gray and silvery color; metallic ring; cell structure 
good; breakage somewhat cross fractured, but pieces of good, large, uniform 
size; good, strong, heavy coke; ash high; probably could be reduced by washing. 
Test 136: Light-gray and silvery color; metallic ring; cell structure rather large; 
breakage somewhat cross fractured, but pieces of good, uniform size; good, 
strong coke; ash very materially reduced by washing. 
Alabama No. 5. — Test 171: Light-gray and silvery color; metallic ring; cell structure 
good; breakage good; uniform size; ash and sulphur high, both would probably 
be reduced by washing. 
Alabama No. 6. — Test 172: Light-gray and silvery color; metallic ring; cell structure 
good; breakage somewhat cross fractured, but pieces of good, uniform size; 
good, heavy coke. 
Test 174: Light-gray and silvery color; metallic ring; cell structure good; breakage 
somewhat cross fractured, but pieces of good, uniform size; good, heavy coke, 
somewhat better than coke from raw coal, but low ash and sulphur of this coal 
would not warrant washing. 
Arkansas No. 1 B. — Test 95: Dull-gray color; soft, dense, punky coke; cell structure 
very small; breakage very bad and irregular; large and small chunks. 
Test 96: Dull-gray color; soft, dense, punky coke, with no apparent cell structure; 
drawn from oven in large and small chunks, very easily crushed; test was run 
slowly and high enough heat was not obtained, which accounts for the large 
percentage of breeze. 
Test 97: Dull-gray color; soft, dense coke; cell structure small; better than coke 
from washed coal. 
Test 100: Dull-gray color; soft, dense, punky coke; possibly little better than 
coke from this coal, with addition of 10 per cent of pitch. 
Arkansas No. 7 B. — Test 104: Dull, dark color; very soft, light-weight coke; no appar- 
ent cell structure; drawn from oven in large and small lumps; bottom 6 inches 
did not coke, burning to ash, all volatile being expelled, but did not stick 
together. 
Test 105: Soft, dense, punky coke; drawn from oven in large and small chunks; 
somewhat better and heavier than coke from coal containing no pitch. 
Arkansas No. 9.— Test 98: No coke produced; charge ashed over top and down about 
5 inches. 
