DETAILKJ) DKSCmrTlONS Ol' '11 IK IlKSl'ECTlVE COALFIELDS. ^3 
extent. The following are analyses of coal scams with a thickness 
of 10 and 4 feet, respectively : — 
10' acain. 4' Hcam. 
Moisture 6-50 8-40 
Volatile matter .... 20-20 30-74 
Fixed carbon 50-20 54-40 
Ash 23-10 6-40 
non-coking caking. 
The country is a rough one and difficult of access. 
Damhamunda} — Another outlier is found near Damhamunda 
in the same sub-division. The area is 4| sq. miles. The coal 
is poor and the seams thin. 
Rampur (Sarguja). — This coalfield must not be confounded with 
that portion of the Raigarh-Hingir field which Mr. G. F. Reader 
has described in the Memoirs of the Geological Survey of India, 
Volume XXXII, part 2, and to which he gave the same name. 
The area under discussion adjoins the Lakhanpur coalfield on the 
north, and is bounded on the east by Mainpat ; on the south it 
passes into the Mand area described below, and on the west it is 
connected with the great area of coal-measure rocks which stretches 
to Korba. 
In 1882 ^ Ball reported that the only seam of any value 
which has been discovered crops out near the foot of Ramgarh hill. 
It is 4 feet 6 inches thick and the coal is rather stony. Coal is 
also said to occur on the Chornai river. 
The field was re-visited in 1886-87 by Lala Hira LaP who 
estimated the total area to be 70 square miles. He mentions 
numerous localities in which coal occurs in seams of from 2 to 7 
feet in thickness. From his analyses the inorganic matter appears 
to vary from 12 to 25 per cent., but a five feet seam outcropping 
in a tributary of the Dhamgora stream at a point a m.ile east of 
Bhakue, yielded less than 4 per cent. 
Kurasia. — This field is situated on the east of the Hestho river 
in the Korea State. The superficial area of the Barakar rocks is 
48 square miles. 
In the course of a partial examination of the field Hughes * 
discovered seven outcrops of coal. The three most important seams 
1 Lala Hira Lai : MS. Report, 18S5-86. 
2 V. Ball : Rcc. G. S. I., Vol. XV, p. Ill (1882). 
MS. Report, 1880-87. 
* Mem., G. S. I., Vol. XXL P- 203 (1885) 
G 2 
