104 



HUGHES : WARDHA VALLEY COAL-FIELD. 



remarks on their relative values to each other and to the coals of other 

 fields. 



Value of the coal. — Fuel containing a large amount of combustible 

 volatilisable substance gives rise to a copious evolution of hydrocarbons, 

 burning usually with a large flame, and is useful for generating steam ; 

 but for producing high temperatures, and for iron smelting, the more 

 carbonaceous the coal, the better adapted is it generally found to be. 



(a.) Fixed carbon. Warora. — Now the "Warora coal hitherto analysed 

 is deficient in fixed carbon, and in combustible volatile gases, so that it is 

 not fuel which could be considered a type of either of the two above classes 

 of coal ; 45 per cent, of fixed carbon, and 26*5 per cent, of volatile matter, 

 being below the standard. The amount of fixed carbon is inferior to 

 every one of the 33 Raniganj field samples tried at the Mint and in 

 our laboratory, the lowest of which contains 45 per cent., while the 

 average is 53*3, and the maximum 63"4. 



Pisgaon. — A much better coal is that at Pisgaon, Mr. Tween's 

 analysis of it in its natural condition shewing 65*1 per cent, as against 

 Warora 45*4 per cent. After expulsion of water, the percentage of 

 carbon in the samples treated by Mr. Ness are, for — 



Pisgaon. Warora splintery coal. Warora cherry coal. 



Carbon ... 62-5 57'0 48-0 



The Ghugiis and Telwasa coals are much alike, if the average be 



taken, but there is a working thickness of 16 feet in the Telwasa seam 



which would give coal superior to that of either Ghugiis or Warora. 



The Sasti samples from B and C shafts compare favorably as 



regards total quantity of carbon with some of the first-class coals of 



the Raniganj field. 





Raniganj 



field. 







Sasti. 





Dumakunda 



... 





... 7186 



B shaft 



... 



74-07 



Bauali 



... 





... 69-98 



c „ 



... 



74-33 



Raniganj 



... 





... 69-45 









Sanktoria 



... 





... 68-89 









Mangalpur 



... 





... 68-81 









( 104 



) 













