COAL EXPLORATIONS. *3 "5 



R 7 and R", can be considered, per se, profitably workable. There is 

 every reason to suppose that the seam extends over the greater por- 

 tion of the Barakar area being low down in the Barakar horizon. 

 On the sketch-plan I have marked what from present geological 

 data would appear to be the outcrop of this seam, but as has been 

 previously remarked, data are very few and surface evidence wanting! 

 so that the mapping of the outcrop can only be looked on as an 

 approximation. 



The question arises as to how to prove the extension and capabil- 

 ities of this seam. The best way, of course, is to prove the outcrop 

 of the seam for some distance. Starting say from R" exposure near 

 Rampur a series of hand boreholes might be put down along a 

 line going westward towards Durlipali. Such boreholes, however, 

 must be put down in a systematic manner and the exact relation- 

 ship of the section of any one to that of the previous one and the 

 Eeb river seam be ascertained before another borehole is put down 

 further to the west. The same method might also be applied along 

 the line of the outcrop marked as running northwards from Rampur, 

 but sufficient ground would, in all probability, be proved in the first 

 case to warrant mining operations and plant. As far as the outcrop 

 on the right bank of the Eeb river is concerned, it should not be lost 

 sight of even if, as supposed is the case, it represent a patch cut off 

 by a fault from the main area. There is ample room for a small 

 plan ; it is not unlikely, however, that water will be a trouble. 



I have stated previously that, the bottom of the Dhoramuda 

 borehole pppears to be from 500 to 600 feet 



General consideration. , . _ , ,. , , , , , 



above the top of the Kodopah borehole and that 

 the bottom of the Kodopali borehole has not struck the Talchirs. 



Sketch section A illustrates what I think is approximately the 

 relation of these boreholes to one another. I have scored in red the 

 lengths unproved by the Dhoramuda and Kodopali boreholes which 

 may amount to from 600 to 800 feet or more. 



The thickness of measures above the Kodopali borehole — refer- 

 ence B in Horizontal Section A. — appears to have been proved by 

 Dr. King (Vol. XX, Rec. Geol. Surv. Ind., boreholes Nos. 7 and 8), but 



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