l)l'7rAILKI) DKSCnil'TIOXS OK 'IIIK KKSI'KCTIVK ('OA LI'I KLDS. 59 
Hutar} — This field is situated in the vaUey of tlie Koel 
river about 12 miles to tlic west of the Aurauf^a field; it has an 
area of 781 sq. miles, of whieh 57 are occupied by the coal-bearing 
Barakars. Faults are much less in evidence than in the Auranga 
field and tlie prevailing dips are at low angles ; the only trap 
intrusions known are confined to the Tulchir rocks. There are 
several coal-seams, but only three are of such a thickness and 
quality that tliey could be worked with piofit ; these are as 
follow : — 
])auii river, S. E. of Harilong . . . . 8' 0" seam. 
Hurtali river, <at Toleh 8' 0" „ 
Supalii river, at Binda . . . . . 13' 8" ,, 
The last mentioned seam contains only a small quantity of coal, 
a fault bringing up the gneiss within a few feet of the outcrop. 
The lack of continuous exposures renders it unwise to hazard any 
estimate of the quantity of coal ; but with the evidence at disposal 
the prospects of the field do not appear to be encouraging. The 
quality of the coal is well up to the average of Indian coals ; 
the average analysis of 8 samples is as follows : — 
Moisture 5-95 
Volatile matter 28-00 
Fixed carbon . . . . . . . .55-35 
Ash 10-70 
Daltonganj. — The Daltonganj field is situated in the valleys of 
the Koel and Amanat rivers in the Palamau district of Chota 
Nagpur. The total area of the field is nearly 200 sq. miles, but 
the coal-bearing rocks (Karharbari Barakars) occupy only about 
30 sq. miles of this area. The distribution of the coal appears 
to be extremely irregular, and there is apparently only one seam 
from which hope of extracting any large amount of coal may be 
entertained. The maximum ascertained thickness of this seam 
near Rajhara is 29 feet but it thins out more or less rapidly in 
all directions. Various estimates have been made of the amount 
of workable coal in the field. In 1869 Mr. Hughes ^ fixed this 
amount at 18 million tons, but Dr. Saise in 1890 estimated that 
there was a total quantity of 161,377,000 tons of coal containing 
11-7 per cent, of ash. In 1891, however, a number of borings 
1 Ball: Mem.., G. S. I., Vol. XV, pp. 1-127 (1878). 
2 Mem., G. S. I., Vol. VlII, p. 325 (1872). 
