GENERAL ECONOMIC SUMMARY. 
2\4 
Roth 8«'Hiii8 dip, on the average, to the N. N. W., at an anf^le 
varyiuj^ from 5° to 15° or more. 
In the Kurasia field two areas were examined. In the Kurasia 
area, where G coal h()riz(»us were noted, horizon 4 in the most 
important, the coal ran<j;infi; in thickness from 1' to 8 0" (2 to 
5 seams). This horizon mijfht, very likely, he proved l)y l)orinfi 
to cover ahout 4 scjiiare miles : an avera<4e thickness of .0 feet 
for the coal would correspond to 5J million tons per square mile. 
The samples show tlie following; range and mean composition for 
the coal 
LiniitK. 
•Mean. 
Moisture ...... 
7-52 to 10-74 
8-60 
Volatile matter ..... 
30-12 to 31-32 
30-92 
Fixed carbon ..... 
46-96 to 49-88 
48-86 
Ash 
9-32 to 13-82 
11-56 
100-00 
Horizons 3 (11|' coal at one locality — Bijaura Jharia) and 2 (8' 
coal at one locality — Gorghela Nala) are also worth investigation. 
In the Chirmiri area of this field, the finest series of coal seanis 
in the State is exposed in the Kaoria Nala at and below a water- 
fall known as the Karar Khoh. Seven seams of an aggregate thick- 
ness of 36 feet were measured, the analyses showing the following 
range and mean composition : — 
\ 
Limits. 
Mean. 
Moisture ...... 
6-24 to 9-08 
7-7 
Volatile matter ..... 
23-48 to 33-8(i 
29-1 
Fixed carbon ..... 
48-08 to 54-20 
51-2 
Ash 
fl-.W to 10-72 
li'O 
100-00 
f2 
