History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c12.s1.t13.8
History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c12.s1.t13.8
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v1.c12.s1.t13.8
Shallow mining or outcrop mining seems to have depended mainly on the use of hammer and ‘gad’ exploiting weaknesses exposed by weathering. Firesetting was occasionally used at shallow depth, and clearly predominated in the hard rocks unaffected by leached solutions at depth.