Paet III. — Economic Geology — Summaky. 



The progress of exploration in the Kaniganj field has not yet been 



sufficient to supply materials for a complete list of the coal seams. 



Such a list was attempted by Mr. Williams, but it will have been 



seen from the preceding pages, that that geologist was misled as to 



the position of some of the richest strata, and classed as distinct beds 



which were of contemporaneous origin. It has also been shown above, 



that even in the portion of the district which has been most extensively 



opened out by mines, viz. the country in the neighborhood of Raniganj, 



the knowledge which can be obtained of the relations of the different 



beds to each other is vague in the extreme. If this is the case where 



the different mines are only 2 or 3 miles apart, it must be evident, 



that only surmise can exist as to the identity of coal seams only known 



at distances of 10, 15, or 20 miles from each other. The seams now 



worked, and their respective thicknesses, are the following in descend-- 



ing order : — 



Kaniganj Series. 



Hast of the Field, 



, T Thickness in A1 , , . 



Name. Ft Atso worked ai 



1. Sirsol seam ... 20 



2. Eaniganj ditto ,.. 14 to 16 Damulia, Harabkanga. 



3. Mangalpur ditto ... 15 to 20 S Ha ™P^ Babusol. 



(Jemeri? Parassia?* 



4. Gopinathpiir ditto ... 7 Bkangaband. 



5. Jor Janki ditto ... 5J 



6. Tapassi ditto .,. 22 Dhosal, BanaliPf 



7. Chokidanga ditto ... 15 Mainadpiir. 



8. Rogonatk Chuk ditto ... 12 



9. Ckalwad ditto, or Beldangak... 9 



* This identification is extremely doubtful. f Very doubtful. 



