Mining and natural resources major Vedanta Limited (VEDL) has seen a surge in share price after a recent upgrade by CLSA. Indeed, the stock is up more than 30 per cent in the last month. The company has been hard to evaluate for a while because it is due for a complicated corporate restructuring into six separate companies and also the commodity cycle for industrial metals has been in a bearish trend. Indeed, the consolidated business is estimated to see an 8-9 per cent year-on-year (YoY) decrease in the January-March quarter (Q4) Ebitda (about 0.7 per cent down quarter-on-quarter or