DETAILED DESCRIPTIONS OF THE RESPECTIVE COALFIELDS. ^-r 
The most important seam in the coalfield is the Dishargarh 
seam. It has an average thickness of 18 feet and can be traced 
from Nodiha, south of the Damuda river, in a north-easterly direction 
for about 12 miles to Nuni, 4 miles north of Asansol. East 
of Sitarampur, however, the coal is much damaged by trap 
intrusions. 
The Sanctoria seam is 10 feet thick. Except in the neigh- 
bourhood of Sanctoria itself it has not been much worked. Around 
Sitarampur the outcrop is completely burnt by trap. The seam 
is probably workable between Sanctoria and Sodepur, a distance of 
about 2 miles. 
The Sibpur seam ranks second in importance in the coalfield. 
It is from 12 to 18 feet in thickness and can be traced from 
Chinchuria, 4 miles north of Asansol to Ikrah Junction, East 
Indian Kailway, a distance of about 9 miles. 
The Ghusic seam is 12 feet in thickness and preserves its valu- 
able quality for a distance of about 3 miles in the neighbourhood 
of Kalipahari, 
The Raniganj seam is 15 feet in thickness and, as its name 
implies, is found in the neighbourhood of Raniganj. About 2 miles 
of outcrop have been proved. 
The workable seams of the Barakar or Lower measures at Chanch, 
Laikdih, Ramnagar and Salanpur may be considered to average 
20 feet in thickness and to have a length of outcrop of 10 miles. 
Presuming that these seams can all be profitably worked to a 
distance of 2 miles from the outcrops toward the dip, and deduct- 
ing one-third for coal already extracted or imworkable the amount 
of coal available would be : — 
First class coal. — 
Dishargarh seam ..... 300 millions of tons. 
Sanctoria seam ..... 30 „ „ 
Sibpur seam ...... 188 „ „ 
Total quantity of first class coal . 518 
Medium quality coal. — 
Ghusic seam ...... 50 millions of tons. 
Raniganj seam ...... 40 „ „ 
Laikdih-Salanpur seam .... 270 „ „ 
Total quantity of medium quality coal 
360 
