20 | HUGHES: DALTONGANJ COAL-FIELD. 
In the Office of the Geological Survey, the following analysis of the 
EE O re Pandüa coal, which had been exposed for several 
uality of coal. 
years, was made by Mr. Tween, viz. :— 
Carbon Me es E ... 644 
Volatile matter ae a 24 
Ash Wa aA con ong «Me 
In the * Gleanings in Science," page 283, vol. III, the following 
analyses are recorded :— 
1, Slaty coal S. G. ... Got 1:482 
Water expelled on sand bath ves RUE 
Carbon Be an 4 5085 27]: 
Volatile matter AE ds dan aye 
Ashes s Sue ae sone. 05 
Percentage of ash in coke ... Bd aaa) LUGS) 
2. Coal without lustre, S. G. 8 der 1:419 
Water expelled in sand bath E sonos CU ed 
Carbon as SEU ee REE s. 041 
Volatile matter Ken ace e. 964 
Ashes os he ves AOI 
Percentage of ash in coke ... 14:9 
Considering that the coal assayed by M Mr. Tween had been exposed 
for several years, and possibly some of the volatile matter had been 
dissipated, there 1s a close approximation to the results obtained and 
recorded in the Gleanings in Science. I have little doubt that these 
assays are of the Singra coal, and if so, it shows that the coal of the 
field is of pretty equable quality. 
Ten to thirteen per cent. of ash is in excess of the better kinds of 
Damüdá coal, but for ordinary purposes, this amount of inorganic matter 
is no serious drawback. The coal of this field is capable of performing 
the duties which Rániganj coal has hitherto accomplished. 
[ have already mentioned that the Bengal Coal Company once 
worked the coal at Rajhéra and at Pandta. Several shafts have been 
sunk, and two of them are of large dimensions. The finest is one south 
of the village of Pandáa, which is 13 feet in diameter. The water in 
it stood at a level of 50 feet below the surface of the ground on the 
18th February 1869. 
( 8344 ) 
