42 WASHING, COKING, AND CUPOLA TESTS. 
Pennsylvania No. 21. — Test 187: Light-gray and silvery color; metallic ring; cell struc- 
ture small, not dense; breakage good; long, large pieces; good, heavy coke. 
Test 189: Light-gray and silvery color; metallic ring; cell structure small, not 
dense; breakage somewhat marred by cross fracture, but pieces of good, uniform 
size; good, heavy coke. 
Test 191: Light-gray and silvery color; cell structure small, not dense; metallic 
ring; breakage good; uniform size; good, heavy coke. 
Test 192: Light-gray and silvery color; metallic ring; cell structure a little small, 
not dense; breakage good; uniform size; good, heavy coke. 
Tennessee No. 1. — Test 133: Light-gray and silvery color; metallic ring; cell structure 
a little large; breakage good; long, large pieces; good, strong, hard, heavy coke; 
ash a little high. 
Test 153: Light-gray and silvery color; metallic ring; cell structure good; break- 
age somewhat marred by cross fracture, but pieces of good, uniform size; good, 
heavy coke; ash and sulphur reduced by washing. 
Tennessee No. 2. — Test 127: Light-gray and silvery color; metallic ring; cell structure 
medium; breakage poor; very brittle, long-fingered pieces. 
Tennessee No. 3. — Test 128: Light-gray and silvery color; metallic ring; cell struc- 
ture good; breakage poor; very brittle, long-fingered pieces. 
Tennessee No. 4. — Test 125: Light-gray and silvery color; metallic ring; cell structure 
good; breakage, long- fingered pieces; f-inch black butt. 
Test 129: Light-gray and silvery color; metallic ring; cell structure good; break- 
age, long- fingered pieces; black butt removed. 
Tennessee No. 5.— Test 154: Light-gray and silvery color; metallic ring; cell structure 
a little large; breakage good; long, large pieces; good, heavy coke; sulphur 
high. 
Tennessee No. 6. — Test 122: Light-gray and silvery color; metallic ring; cell structure 
good; breakage, good; long, large pieces; good, strong, heavy coke; ash high; 
probably reduced by washing. 
Tennessee No. 7 B. — Test 121: Poor coke; soft, tough, and punky; drawn from oven 
in large chunks; ash and sulphur high. 
Test 123: Light-gray and silvery color; metallic ring; cell structure a little large; 
breakage good; large, uniform-sized pieces; strong coke, great improvement 
over raw charge; ash and sulphur reduced by washing, but still high. 
Tennessee No. 8 B. — Test 134: Light-gray and silvery color; metallic ring; cell struc- 
ture large; breakage somewhat cross fractured, but pieces of good, large, uni- 
form size; sulphur high. 
Tennessee No. 9. — Test 124: Light-gray color; some silvery deposit of carbon ; metallic 
ring; cell structure large; breaks in irregular pieces of good size. 
Tennessee No. 10. — Test 156: Poor coke; drawn from oven in large, irregular lumps; 
very tough and dense; with black butt and high ash. 
Tennessee No. 11. — Test 160: Poor coke; breakage, large pieces of irregular size; cell 
structure small; dense and punky; small amount not coked well at bottom; 
ash high. 
Utah No. 1. — Test 130: Dull-gray color; practically no cell structure: soft, dense 
coke; very fine-fingered pieces, very brittle, and easily broken into small 
pieces. 
Test 141: With R. I. No. 1. No coke produced ; all volatile expelled and charge 
burned entirely to bottom. 
Test 157: With R. I. No. 1. Very poor, dense coke; half the product did not 
cement together; the other half very finely fingered coke, very brittle and easily 
broken, similar to coke from Utah No. 1. 
