COKING TESTS. 
By Fred. W. Stammler. 
INTRODUCTION. 
The tests of the coking" qualities of the coals received at the testing 
lant were made in a battery of three bee-hive ovens. The ovens are 
: standard size and shape, 12 feet in diameter and 7 feet high, and 
ley were built from plans furnished by Mr. John Fulton, the well- 
aown expert on coke making, of Johnstown, Pa. The writer was 
sisted in making the coking tests by Mr. B. B. Boyd, of Uniontown, 
i. The analyses given in the table at the end of this report, of coals 
at were charged in the coke ovens, and of the resulting cokes, were 
i made at the chemical laboratory of the testing plant under the 
rection of Prof. N. W. Lord, of Columbus, Ohio. 
The ovens were fired on September 10, and were kept in blast until 
ecember 16. During this time 61 tests were made, embracing 44 
fferent coals, coming from 11 States. Thirty-two tests were made 
. 29 different samples of raw coal, and 27 tests were made on 24 
mples of washed coal. Two tests were made on briquettes of non- 
king coal, having an additional amount of volatile matter used as a 
iding material. All of the coal charged into the ovens was first 
ssed through rolls reducing it to 1^ inches or smaller. 
RESULTS OF TESTS. 
The results of the coking tests have been arranged alphabetically by 
ites, the general number adopted for all tests being given for ready 
jntification, and are briefly summarized as follows: 
Alabama No. 1. — Lump and nut coal from mine No. 8, Ivy Coal 
I Iron Company, Horse Creek, Ala. 
Two charges were made of this coal, the first being unwashed and the 
iond washed. The first charge of unwashed coal consisted of 8,000 
ands. Although the coking process was continued for 88 hours, the 
te was very light, of a spongy structure, and high in ash. Washing 
luced the percentage of impurities but slightly, though it is believed 
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