CHANDA DISTRICT. 27 



The exactness of the foregoing- figures in columns II and III must 

 not be too closely criticised : for, in computing either the total thick- 

 ness of the seam, or the total quantity of coal in the seam by reference to 

 the journals, it must be borne in mind that the degrees of coal, 

 coaly shale, and shale, may be varyingly estimated by different people. 

 What really is coal may be entered as coaly shale, and vice versa; and 

 the totals will, of course, be affected accordingly. With this source of 

 possible error, I think it is unnecessary to compare each section in detail. 

 A broad fact is patent, that the bore-holes east of the line joining Nos. 

 7 and S entered thick coal, and that coal is the continuation of the seam 

 proved elsewhere in the field. 



The coal comes close to the surface near the tank, and sinks in the 

 diction of Akapiir and Akarjiin. Taking the 

 three borings SI., Wl. and Ul, the inclination in 



that part of the basin is 1 in 13, or about 8°*. The general dips are 



indicated on the map. 



The coal does not extend to Nandiiri, a boring having been put 



. down near the village that passed from the Kam- 

 No coal at Nandun. 



this into Talchirs. 



The section of the hole in full is — 



Section of Ndnduri bore-hole. 

 No. 



1 Surface soil 



KdmtJiis. 



2 Yellow sandstone 



3 White sandstone micaceous ... 



4 Variegated sandstone 



5 Red sandstone ... 



6 Brown sandstone micaceous 



7 Yellow sandstone 



Ft. 



In. 



3 



8 



2 







1 







2 







2 







2 







5 







Authority.— Mr. Ness, Superintendent, Warora Colliery. 



( 27 ) 



