Chap. TV. § 4.] raniganj group. 91 



In the mine no complete section is seen, there is, however, said 

 to be : — 



Carbonaceous shale... 

 Coal, good 



Shale 



Coal, inferior 





Ft. 



in. 



... 



... 12 







... 



... 12 







... 







1 



... 



8 







Total thickness of seam 



... 20 



i 



Coal in ditto 



... 20 







The lower portion of the seam, though inferior to the upper, is still 

 very fair coal. The backs in the quarries strike North 20° "West, under- 

 laying to the West, and East 30° North, vertical. In the mine they 

 are slightly different, being North 20° to 30° West, and about East 15° 

 North. The mine is ill worked, the galleries irregular and unevenly 

 cut. A large area of the coal has been extracted from beneath the 

 ground between Sirsol village and the out-crop, but the workings do 

 not extend far either to the East or to the North. 



Raniganj mine, the most extensive in the district, lies rather more 

 . . . „. than a mile South of Sirsol. The seam dips to the 



Raniganj colliery. A 



North, or North by East, about 3° in the mine, 

 and at 5° near the out-crop, which runs from West to East, alono- a 

 little hollow between the villages of Raniganj and Narrainktiri, and has 

 been on fire. The following is the section of the beds above and below 

 the coal, taken from borings made by the Bengal Coal Company : — 

 Raniganj New Mine. 



Ft. in. 



1. Coarse, white sandstone, soft ... ... ... ... 140 



2. Ditto ditto, hard ... ... ... ... 6 q 



3. Sandstone yielding water ... ... ... ... 16 



4. Ditto, very compact, with thin wavy seams of coal interspersed 4 



5. Blue shale ... ... ... ... 6 



6. Ditto, with numerous fossil plants... ... ... ... 18 



7. Clay (indurated) sometimes wanting ... ... ... o 3 



8. a. Carbonaceous black shale ... ... ... ... 7 10 



Carried over 72 1 



