History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c12.s1.t6.5

v1.c12.s1.t6.5

Based on his observation Willies (1987) opines that it is evident that there are atleast two stages of mining: the main section with the pathway is 10-20 m wide x 2 m high which seems to cut through older much smaller ramification of tunnels, small chambers, and small climbing shafts. Most of the works seems to have been done by hammer and ‘gad’, exploiting weaknesses in the partially sheared dolomite. There is evidence of fire-setting near the entrance in the hollows in the roof, and at the bottom of workings. Waste debris is held back by carefully built stone walls, mortared with clay.