(i) . Iron ore, bauxite, limestone and dolomite,
(ii) The technique of silk production is called sericulture. Sericulture is a labour intensive industry and provides employment to a large number of people. Silk is produced by small units usually by individual families. Chhattisgarh is a densely populated region with mainly rural population. Cheap skilled labour is easily available. So, sericulture has become an important industry to this region.
(iii) Tussar silk and Mulberry silk.