DETAILED DESCRIPTIONS OF THE RESPECTIVE COALFIELDS. 97 
statistical returns of output 3,G57 tons of coal were raised from the 
Rajalizonipalli pits between the years 1891-95. In the latter year, 
however, the enterprise was abandoned. 
Limjnlla. — In the small ai'ea of Barakar rocks surrounding 
Lingalla, two seams, neither of them exceeding 2 feet in thi(-kness, 
were found by Dr. Blanford ^ in the bank of the Godavari, and 
another 5 feet thick in its bed. A boring put down to test the 
extension of this bed inland was unsuccessful. 
In the year 1880, officers in the Nizam's service wcrj engaged, 
according to Dr. King,^ in making borings to test the field on 
the western side of the river, but they were apparently unsiiccefs- 
ful in proving coal seams of workable thickness and quality. As 
the coal found on the British side is of poor quality, and as it 
would be difficult to work these beds under the bed of the river, 
even if they were of better quality, the field is not of much value. 
In 1897 enquiries made by the Geological Survey elicited from 
the Collector of the district the following statement : ' ' The coal- 
bearing rocks on the British side cover about 5 square m.iles. 
A seam of coal was struck in 1891, and a trial pit, 11 feet deep, 
sunl:. Seventy tons of very good coal were taken out. The coal was 
5 feet thick (including a bed of shale 6 inches thick, 2 feet from 
the floor). Allowing \ loss on mining, this field on the British side 
is estimated to yield 8 million tons of saleable coal." 
Singareni. — The Singareni coalfield is situated near Yellandu, 
about 115 miles due east of Secunderabad. It is an elongated 
strip of Lower Gondwana rocks, 13 J miles in length, 3| miles in 
greatest breadth, and with a total area of about 19 square miles. 
The coal-measures (Barakars) occupy about 9 square miles, but 
except in a few small patches they are completely covered up and 
overlapped by unconformable deposits of Kamthi age. The average 
dip of the rocks is from 8° to 10°. Except on the north the bound- 
aries of the field are faulted against the crystalline rocks on which 
the basin lies. Four seams of coal have been found. Their respec- 
tive thicknesses are as follow : — 
Feet. 
Thick coal, alternating hands of coal and shale . . 30 to 40 
New coal contains 20 per cent, of inorganic matter . 6^; 
Stone coal „ 30 „ „ „ . 4J 
King seam . . . . . . . . 3| to 7 
1 Rec, G. S. I., Vol. IV, p. 59. 
» Mem., G. S. I., Vol. XVIIJ, p. 191, 'LSHl). 
H 
