148 FKELIM1NARY REPORT ON COAL-TESTING PLANT, [bull. 261. 
(26) West Virginia No. 6. Bituminous run-of-mine coal from mine of the New 
River Smokeless Coal Company, Rushrun, W. Va. 
(27) Wyoming No. 1. Black lignite from mine of the Wyoming Coal and Mining 
Company, located at Monarch, Wyo. 
The above coals have been tested with various binders on both the 
English and American machines, and from a ton up to 15 tons of bri- 
quettes have been made from each coal. In the following pages ig 
given a description of the binders used, of the character of the bri- 
quettes as they were received from the machine and after they were 
exposed to the atmosphere, and of their behavior when burned. These 
descriptions are taken up alphabetically by States. 
ALABAMA. 
Alabama No. 1. — This is a coking coal which can be very readily 
manufactured into a briquette with hard pitch, and which undei 
extreme pressure can be briquetted without the addition of any binder 
There were 4.5 tons of this coal briquetted on the English machine 
with 7 per cent of the hard pitch A. The briquettes were strong and 
quite satisfactory, except for porosity due to a lack of sufficient pres< 
sure. These briquettes stood up well in the fire, a but on long expo 
sure to the weather became somewhat disintegrated. The weight o: 
the briquettes averaged 5£ pounds each. 
ARKANSAS. 
All of the Arkansas coals tested are similar in their properties 
They are higher in fixed carbon than the ordinary bituminous coal an , 
are often called semianthracite coals. The coals from Jenny Lind an 
Denning show more of this character than the coals from theothe* 
sections of Arkansas. 
Arkansas No. 1.— This coal was tested only with hard pitch A, si 
this was the only pitch available at the time the coal was briquette(| 
Six tons of coal were mixed with 9.25 per cent of this pitch and mac | 
into briquettes on the English machine/' The briquettes were coc 
pact and well pressed, but were too friable for handling, showing thi| 
there was not sufficient pitch. They were brownish in color and vei 
dirty. Judging from the results obtained in working with oth 
Arkansas coals, this coal will require more than the usual amount 
pitch. 
Arkansas No. 2. — This coal was tested with the very hard pitch ] 
which at the time was the only pitch available. These briquettes we 
made in the English machine, which was set to give approximately 
per cent pitch. There were 6 tons of crushed lump coal run throu 
the machine, but the resultant briquettes were very pitchy and wr: 
" For steam test see p. 80. 
