Minerals and Metals in Ancient India v1.c26.s3.t2.2
Minerals and Metals in Ancient India v1.c26.s3.t2.2
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v1.c26.s3.t2.2
Boroi Magra Mine ridge (fig. 18.1) has a number of shallow workings, and deeper ones have been revealed by boreholes. Small mortars were cut into the rock near shafts, as a means of crushing ore down to coarse sand size. It is not clear whether washing technique or any means of beneficiation, apart from hand-picking was employed after crushing in the mortars.