124 PRELIMINARY REPORT ON COAL-TESTING PLANT, [bull. 26] 
This test was made on 8,095 pounds of unwashed coal. It lasted 4 1 
hours, and nothing but ash was left in the oven. The coal showed n 
tendenc} T to coke. 
Indian Territory No. < 2. — Run-of-mine coal from mine No. 8, o 
Rock Island Coal Company, Hartshorne, Ind. T. 
Two tests were made on this coal, washed and unwashed. Bot] 
charges weighed 9,000 pounds. The unwashed charge was burned fo 
66 hours, and yielded 5,725 pounds of coke and 580 pounds of breez 
and ash. The coke was very soft, shattered and brittle, and somewha 
high in sulphur. The washed charge contained one-third less ash tha 
the unwashed (p. 67). It was burned for 65 hours, producing a cok 
which was hard and which had a fairly good ring. It showed consid 
erable improvement in appearance over the coke made from unwashei 
coal, but the sulphur content was not materially reduced. 
Indian Territory No. 3. — Run-of-mine coal from mine No. 1, E 
Edwards & Sons, Edwards, Ind. T. 
Two tests were made on this coal, the first being on 12,000 pound 
of unwashed coal, burned 65 hours, and the second on 14,000 pound 
washed coal, burned 6(] hours. The washed coal, instead of showin 
a reduced percentage of sulphur, showed a gain (p. 68). Neithe 
charge yielded coke. The ovens when drawn contained small pieces c 
charred coal and ash. 
Indian Territory No. 5. — Slack and pea coal from mine No. 7, Wes 
ern Coal and Mining Company, Lehigh, Ind. T. 
This test was made on 10,000 pounds of washed coal and was col 
tinued for 65 hours (p. (^8). It produced some small pieces of cok 
fritted together, light and soft. The general conclusion regarding tl 
Territory coals tested is that when properly washed they will produn 
coke, but not of a character suited for iron smelting, as the sulphi 
is too intimately combined or mixed with the coal to be removed \) 
washing. 
Iowa No. 1. — Lump and fine coal from mine No. 2, Anchor Cc 
Company, Laddsdale, Iowa. 
In this test, as in all those on Iowa coals, the charge was of washij 
coal (p. 68). The charge weighed 9,500 pounds, and after burning J 
hours yielded 4,828 pounds of coke and 572 pounds of breeze and as I 
The coke was brittle, with cracks lengthwise and crosswise through | 
It was also high in sulphur and ash. 
Iowa No. 2. — Run-of-mine coal from mine No. 5, Mammoth V<J 
Coal Company, Hamilton, Iowa. 
The charge in this test consisted of 10,000 pounds of washed coi 
which was burned for 64 hours (p. 69). The coke (3,866 pounds w 
1,153 pounds of breeze and ash) was all in small pieces sintered togetl 
and with no bond. 
