Strategies for enhancing the contribution of the Gemstone ...
2021-7-27 · 2.0 Major Constraints of Zambia’s Gemstone Mining Sector Gemstone mining sub-sector constraints can be segmented into two categories, namely, (i) structurally inherent constraints, that exist at the project level; and (ii) External constraints, that influence the environment in which the sub-sector operates, mainly comprising of economic and ...