ammleb.] COKING TESTS. 127 
Dunds of breeze and ash. The coke was of good quality, but some- 
hat brittle. 
West Virginia No. 2. — Run-of-mine coal from Pitcairn mine of the 
itcairn Coal Company, Clarksburg, W. Va. 
Two tests were made of this coal, unwashed and washed. The first 
large was 9,000 pounds of unwashed coal, producing 5,235 pounds of 
ray coke, somewhat brittle and high in sulphur and ash. The washed 
>al (p. 71), of which 13,000 pounds was charged, showed an improve- 
Lent in the coke, though the sulphur was still too high for blast- 
irnace use. The 3 ield from the second charge was 7,808 pounds, or 
) per cent, as compared with 58.2 per cent from the unwashed coal. 
West Virginia No. 3. — Run-of-mine coal from West Virginia Coal 
iinpany, Richard, W. Va. 
Two tests, one of unwashed and one of washed coal, were made on 
ris sample. The charge of unwashed coal weighed 9,000 pounds and 
as coked 41 hours. It yielded 5,929 pounds of coke of gray color, 
tittle and somewhat high in ash, and 364 pounds of breeze and ash. 
he washed charge (p. 71) weighed 14,000 pounds, was coked for 66 
purs, and yielded 9,070 pounds of coke of the same character as noted 
)Ove and 535 pounds of ash and breeze. The qualit}^ of the coke was 
)t improved by washing, except by a small reduction in the amount 
ash. 
The first test of 41 hours' duration gave a yield of 65.9 per cent, the 
cond test of %<d hours gave a yield of 64.8 per cent. 
West Virginia No. Jf. — Run-of-mine coal from West Virginia Coal 
mipany, Bretz, W. Va. 
This coal was tested washed and unwashed. The unwashed charge 
ntained 12,000 pounds. It was burned for 65 hours and yielded 
r)07 pounds, or 74.2 per cent, of coke, and 428 pounds of breeze and 
The charge of washed coal (p. 71) weighed 9,000 pounds. It was 
ed for 42 hours and yielded 6,367 pounds, or 70.7 per cent, of coke, 
374 pounds of breeze and ash. The coke obtained was of good 
or, but was somewhat impaired by cross fractures. No improve- 
ment was noticed as a result of washing. 
West Virginia No. 5. — Lump and nut coal from Davis Colliery 
mpany, Coalton, W. Va. 
Three coking tests were made on this shipment, one of unwashed 
m one of washed run-of-mine, crushed before coking to 1^ inches 
Jdiameter, and one of pulverized coal which was washed in the New 
Jptury jig (p. 72). The first charge of unwashed coal, weighing 
ijOOO pounds, was burned for 64 hours and yielded 8,298 pounds, or 
1IJ18 per cent, of coke, and 497 pounds of ash and breeze. The washed 
lirge, weighing 13,000 pounds, was burned 6Q hours. It yielded 
J63 pounds, or 55.1 per cent, of coke, and 461 pounds of ash and 
,4eze. The pulverized coal, weighing 10,000 pounds, was burned 69 
