History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c12.s1.t12.2

v1.c12.s1.t12.2

There are some small and some large mortar holes each about 30 cm across and up to twice as deep with rounded bottoms. These were undoubtedly worked as stamps, using timber shafts presumably shod with timber or iron, to pummel the ore. At this lode probably silver rich oxidised lead deposit of anglesite or cerussite was worked.